From 442e3c6dcf35cc1ca508e617f94198637e761bc8 Mon Sep 17 00:00:00 2001 From: davy Date: Wed, 3 Jul 2019 16:55:03 -0500 Subject: [PATCH] dep ensure --- Gopkg.lock | 32 +- vendor/github.com/wybiral/torgo/LICENSE | 674 +++++++ vendor/github.com/wybiral/torgo/README.md | 6 + vendor/github.com/wybiral/torgo/client.go | 23 + vendor/github.com/wybiral/torgo/controller.go | 242 +++ vendor/github.com/wybiral/torgo/ed25519.go | 57 + vendor/github.com/wybiral/torgo/onion.go | 13 + vendor/github.com/wybiral/torgo/rsa.go | 46 + vendor/github.com/wybiral/torgo/torgo.go | 2 + vendor/golang.org/x/crypto/AUTHORS | 3 + vendor/golang.org/x/crypto/CONTRIBUTORS | 3 + vendor/golang.org/x/crypto/LICENSE | 27 + vendor/golang.org/x/crypto/PATENTS | 22 + vendor/golang.org/x/crypto/ed25519/ed25519.go | 222 ++ .../x/crypto/ed25519/ed25519_go113.go | 73 + .../ed25519/internal/edwards25519/const.go | 1422 +++++++++++++ .../internal/edwards25519/edwards25519.go | 1793 +++++++++++++++++ vendor/golang.org/x/crypto/sha3/doc.go | 66 + vendor/golang.org/x/crypto/sha3/hashes.go | 97 + .../x/crypto/sha3/hashes_generic.go | 27 + vendor/golang.org/x/crypto/sha3/keccakf.go | 412 ++++ .../golang.org/x/crypto/sha3/keccakf_amd64.go | 13 + .../golang.org/x/crypto/sha3/keccakf_amd64.s | 390 ++++ vendor/golang.org/x/crypto/sha3/register.go | 18 + vendor/golang.org/x/crypto/sha3/sha3.go | 192 ++ vendor/golang.org/x/crypto/sha3/sha3_s390x.go | 284 +++ vendor/golang.org/x/crypto/sha3/sha3_s390x.s | 33 + vendor/golang.org/x/crypto/sha3/shake.go | 173 ++ .../golang.org/x/crypto/sha3/shake_generic.go | 19 + vendor/golang.org/x/crypto/sha3/xor.go | 16 + .../golang.org/x/crypto/sha3/xor_generic.go | 28 + .../golang.org/x/crypto/sha3/xor_unaligned.go | 58 + vendor/golang.org/x/net/AUTHORS | 3 + vendor/golang.org/x/net/CONTRIBUTORS | 3 + vendor/golang.org/x/net/LICENSE | 27 + vendor/golang.org/x/net/PATENTS | 22 + .../golang.org/x/net/internal/socks/client.go | 168 ++ .../golang.org/x/net/internal/socks/socks.go | 317 +++ vendor/golang.org/x/net/proxy/dial.go | 54 + vendor/golang.org/x/net/proxy/direct.go | 31 + vendor/golang.org/x/net/proxy/per_host.go | 155 ++ vendor/golang.org/x/net/proxy/proxy.go | 149 ++ vendor/golang.org/x/net/proxy/socks5.go | 42 + vendor/golang.org/x/sys/cpu/asm_aix_ppc64.s | 17 + vendor/golang.org/x/sys/cpu/byteorder.go | 30 + vendor/golang.org/x/sys/cpu/cpu.go | 126 ++ vendor/golang.org/x/sys/cpu/cpu_aix_ppc64.go | 34 + vendor/golang.org/x/sys/cpu/cpu_arm.go | 9 + vendor/golang.org/x/sys/cpu/cpu_gc_s390x.go | 21 + vendor/golang.org/x/sys/cpu/cpu_gc_x86.go | 16 + vendor/golang.org/x/sys/cpu/cpu_gccgo.c | 43 + vendor/golang.org/x/sys/cpu/cpu_gccgo.go | 26 + .../golang.org/x/sys/cpu/cpu_gccgo_s390x.go | 22 + vendor/golang.org/x/sys/cpu/cpu_linux.go | 59 + .../golang.org/x/sys/cpu/cpu_linux_arm64.go | 67 + .../golang.org/x/sys/cpu/cpu_linux_ppc64x.go | 33 + .../golang.org/x/sys/cpu/cpu_linux_s390x.go | 161 ++ vendor/golang.org/x/sys/cpu/cpu_mips64x.go | 11 + vendor/golang.org/x/sys/cpu/cpu_mipsx.go | 11 + .../golang.org/x/sys/cpu/cpu_other_arm64.go | 11 + vendor/golang.org/x/sys/cpu/cpu_s390x.s | 57 + vendor/golang.org/x/sys/cpu/cpu_wasm.go | 15 + vendor/golang.org/x/sys/cpu/cpu_x86.go | 59 + vendor/golang.org/x/sys/cpu/cpu_x86.s | 27 + .../x/sys/cpu/syscall_aix_ppc64_gc.go | 36 + 65 files changed, 8346 insertions(+), 2 deletions(-) create mode 100644 vendor/github.com/wybiral/torgo/LICENSE create mode 100644 vendor/github.com/wybiral/torgo/README.md create mode 100644 vendor/github.com/wybiral/torgo/client.go create mode 100644 vendor/github.com/wybiral/torgo/controller.go create mode 100644 vendor/github.com/wybiral/torgo/ed25519.go create mode 100644 vendor/github.com/wybiral/torgo/onion.go create mode 100644 vendor/github.com/wybiral/torgo/rsa.go create mode 100644 vendor/github.com/wybiral/torgo/torgo.go create mode 100644 vendor/golang.org/x/crypto/AUTHORS create mode 100644 vendor/golang.org/x/crypto/CONTRIBUTORS create mode 100644 vendor/golang.org/x/crypto/LICENSE create mode 100644 vendor/golang.org/x/crypto/PATENTS create mode 100644 vendor/golang.org/x/crypto/ed25519/ed25519.go create mode 100644 vendor/golang.org/x/crypto/ed25519/ed25519_go113.go create mode 100644 vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go create mode 100644 vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go create mode 100644 vendor/golang.org/x/crypto/sha3/doc.go create mode 100644 vendor/golang.org/x/crypto/sha3/hashes.go create mode 100644 vendor/golang.org/x/crypto/sha3/hashes_generic.go create mode 100644 vendor/golang.org/x/crypto/sha3/keccakf.go create mode 100644 vendor/golang.org/x/crypto/sha3/keccakf_amd64.go create mode 100644 vendor/golang.org/x/crypto/sha3/keccakf_amd64.s create mode 100644 vendor/golang.org/x/crypto/sha3/register.go create mode 100644 vendor/golang.org/x/crypto/sha3/sha3.go create mode 100644 vendor/golang.org/x/crypto/sha3/sha3_s390x.go create mode 100644 vendor/golang.org/x/crypto/sha3/sha3_s390x.s create mode 100644 vendor/golang.org/x/crypto/sha3/shake.go create mode 100644 vendor/golang.org/x/crypto/sha3/shake_generic.go create mode 100644 vendor/golang.org/x/crypto/sha3/xor.go create mode 100644 vendor/golang.org/x/crypto/sha3/xor_generic.go create mode 100644 vendor/golang.org/x/crypto/sha3/xor_unaligned.go create mode 100644 vendor/golang.org/x/net/AUTHORS create mode 100644 vendor/golang.org/x/net/CONTRIBUTORS create mode 100644 vendor/golang.org/x/net/LICENSE create mode 100644 vendor/golang.org/x/net/PATENTS create mode 100644 vendor/golang.org/x/net/internal/socks/client.go create mode 100644 vendor/golang.org/x/net/internal/socks/socks.go create mode 100644 vendor/golang.org/x/net/proxy/dial.go create mode 100644 vendor/golang.org/x/net/proxy/direct.go create mode 100644 vendor/golang.org/x/net/proxy/per_host.go create mode 100644 vendor/golang.org/x/net/proxy/proxy.go create mode 100644 vendor/golang.org/x/net/proxy/socks5.go create mode 100644 vendor/golang.org/x/sys/cpu/asm_aix_ppc64.s create mode 100644 vendor/golang.org/x/sys/cpu/byteorder.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_aix_ppc64.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_arm.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_gc_s390x.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_gc_x86.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_gccgo.c create mode 100644 vendor/golang.org/x/sys/cpu/cpu_gccgo.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_gccgo_s390x.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_linux.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_linux_arm64.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_linux_ppc64x.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_linux_s390x.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_mips64x.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_mipsx.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_other_arm64.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_s390x.s create mode 100644 vendor/golang.org/x/sys/cpu/cpu_wasm.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_x86.go create mode 100644 vendor/golang.org/x/sys/cpu/cpu_x86.s create mode 100644 vendor/golang.org/x/sys/cpu/syscall_aix_ppc64_gc.go diff --git a/Gopkg.lock b/Gopkg.lock index f373c4c..e8b66c3 100644 --- a/Gopkg.lock +++ b/Gopkg.lock @@ -25,15 +25,43 @@ revision = "ed099d42384823742bba0bf9a72b53b55c9e2e38" version = "v1.7.2" +[[projects]] + branch = "master" + name = "github.com/wybiral/torgo" + packages = ["."] + revision = "a19a6c8a50489e2fdf37223edc5f1284bb965308" + +[[projects]] + branch = "master" + name = "golang.org/x/crypto" + packages = [ + "ed25519", + "ed25519/internal/edwards25519", + "sha3" + ] + revision = "4def268fd1a49955bfb3dda92fe3db4f924f2285" + +[[projects]] + branch = "master" + name = "golang.org/x/net" + packages = [ + "internal/socks", + "proxy" + ] + revision = "da137c7871d730100384dbcf36e6f8fa493aef5b" + [[projects]] branch = "master" name = "golang.org/x/sys" - packages = ["unix"] + packages = [ + "cpu", + "unix" + ] revision = "04f50cda93cbb67f2afa353c52f342100e80e625" [solve-meta] analyzer-name = "dep" analyzer-version = 1 - inputs-digest = "099e9b3cae85abca10bb0623f45e324b7230301ecc5a021b3c5a5f45f28f2f93" + inputs-digest = "c0b13b7e13cee43839881abf059f0b69ef9385100bcad825291bce099a60c3d8" solver-name = "gps-cdcl" solver-version = 1 diff --git a/vendor/github.com/wybiral/torgo/LICENSE b/vendor/github.com/wybiral/torgo/LICENSE new file mode 100644 index 0000000..94a9ed0 --- /dev/null +++ b/vendor/github.com/wybiral/torgo/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is 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Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/vendor/github.com/wybiral/torgo/README.md b/vendor/github.com/wybiral/torgo/README.md new file mode 100644 index 0000000..16657c3 --- /dev/null +++ b/vendor/github.com/wybiral/torgo/README.md @@ -0,0 +1,6 @@ +# torgo [![GoDoc](https://godoc.org/github.com/wybiral/torgo?status.svg)](https://godoc.org/github.com/wybiral/torgo) +This is a Go library for interacting with Tor over the standard controller interface. It simplifies tasks like creating ephemeral hidden services, working with private keys, and making SOCKS proxied client requests on the Tor network. + +# Examples +* [/examples/hello-world](https://github.com/wybiral/torgo/blob/master/examples/hello-world) +* [godoc examples](https://godoc.org/github.com/wybiral/torgo#pkg-examples) diff --git a/vendor/github.com/wybiral/torgo/client.go b/vendor/github.com/wybiral/torgo/client.go new file mode 100644 index 0000000..52d7f86 --- /dev/null +++ b/vendor/github.com/wybiral/torgo/client.go @@ -0,0 +1,23 @@ +package torgo + +import ( + "net/http" + "net/url" + + "golang.org/x/net/proxy" +) + +// NewClient return new HTTP client that uses a Tor SOCKS proxy. +// `addr` is the host:port address of SOCKS proxy (usually "127.0.0.1:9050") +func NewClient(addr string) (*http.Client, error) { + u, err := url.Parse("socks5://" + addr) + if err != nil { + return nil, err + } + d, err := proxy.FromURL(u, proxy.Direct) + if err != nil { + return nil, err + } + t := &http.Transport{Dial: d.Dial} + return &http.Client{Transport: t}, nil +} diff --git a/vendor/github.com/wybiral/torgo/controller.go b/vendor/github.com/wybiral/torgo/controller.go new file mode 100644 index 0000000..7b5e137 --- /dev/null +++ b/vendor/github.com/wybiral/torgo/controller.go @@ -0,0 +1,242 @@ +package torgo + +import ( + "encoding/hex" + "errors" + "fmt" + "io/ioutil" + "net/textproto" + "strconv" + "strings" +) + +// A Controller instance is a control port connection that provides methods for +// communicating with Tor. +type Controller struct { + // Array of available authentication methods. + AuthMethods []string + // Cookie file path (empty if not available). + CookieFile string + // Text is a textproto.Conn to the control port. + Text *textproto.Conn +} + +// NewController returns a new Controller instance connecting to the control +// port at addr. +func NewController(addr string) (*Controller, error) { + text, err := textproto.Dial("tcp", addr) + if err != nil { + return nil, err + } + c := &Controller{Text: text} + err = c.getProtocolInfo() + if err != nil { + return nil, err + } + return c, nil +} + +// Make a textproto request and expect the command to have a valid 250 status. +func (c *Controller) makeRequest(request string) (int, string, error) { + id, err := c.Text.Cmd(request) + if err != nil { + return 0, "", err + } + c.Text.StartResponse(id) + defer c.Text.EndResponse(id) + return c.Text.ReadResponse(250) +} + +// Perform PROTOCOLINFO command and parse the response. +func (c *Controller) getProtocolInfo() error { + _, msg, err := c.makeRequest("PROTOCOLINFO 1") + if err != nil { + return err + } + lines := strings.Split(msg, "\n") + authPrefix := "AUTH METHODS=" + cookiePrefix := "COOKIEFILE=" + for _, line := range lines { + // Check for AUTH METHODS line + if strings.HasPrefix(line, authPrefix) { + // This line should be in a format like: + /// AUTH METHODS=method1,method2,methodN COOKIEFILE=cookiefilepath + line = line[len(authPrefix):] + parts := strings.SplitN(line, " ", 2) + c.AuthMethods = strings.Split(parts[0], ",") + // Check for COOKIEFILE key/value + if len(parts) == 2 && strings.HasPrefix(parts[1], cookiePrefix) { + raw := parts[1][len(cookiePrefix):] + c.CookieFile, err = strconv.Unquote(raw) + if err != nil { + return err + } + } + } + } + return nil +} + +// Perform GETINFO command based on key. +func (c *Controller) getInfo(key string) (string, error) { + _, msg, err := c.makeRequest("GETINFO " + key) + if err != nil { + return "", err + } + lines := strings.Split(msg, "\n") + for _, line := range lines { + parts := strings.SplitN(line, "=", 2) + if parts[0] == key { + return parts[1], nil + } + } + return "", fmt.Errorf(key + " not found") +} + +// Perform GETINFO command and convert response to int. +func (c *Controller) getInfoInt(key string) (int, error) { + s, err := c.getInfo(key) + if err != nil { + return 0, err + } + return strconv.Atoi(s) +} + +// GetAddress returns the current external IP address. +func (c *Controller) GetAddress() (string, error) { + return c.getInfo("address") +} + +// GetBytesRead returns total bytes downloaded. +func (c *Controller) GetBytesRead() (int, error) { + return c.getInfoInt("traffic/read") +} + +// GetBytesWritten returns total bytes uploaded. +func (c *Controller) GetBytesWritten() (int, error) { + return c.getInfoInt("traffic/written") +} + +// GetConfigFile return path to Tor config file. +func (c *Controller) GetConfigFile() (string, error) { + return c.getInfo("config-file") +} + +// GetTorPid returns PID for current Tor process. +func (c *Controller) GetTorPid() (int, error) { + return c.getInfoInt("process/pid") +} + +// GetVersion returns version of Tor server. +func (c *Controller) GetVersion() (string, error) { + return c.getInfo("version") +} + +// AuthenticateNone authenticate to controller without password or cookie. +func (c *Controller) AuthenticateNone() error { + _, _, err := c.makeRequest("AUTHENTICATE") + if err != nil { + return err + } + return nil +} + +// AuthenticatePassword authenticate to controller with password. +func (c *Controller) AuthenticatePassword(password string) error { + quoted := strconv.Quote(password) + _, _, err := c.makeRequest("AUTHENTICATE " + quoted) + if err != nil { + return err + } + return nil +} + +// AuthenticateCookie authenticate to controller with cookie from current +// CookieFile path. +func (c *Controller) AuthenticateCookie() error { + rawCookie, err := ioutil.ReadFile(c.CookieFile) + if err != nil { + return err + } + cookie := hex.EncodeToString(rawCookie) + _, _, err = c.makeRequest("AUTHENTICATE " + cookie) + if err != nil { + return err + } + return nil +} + +// AddOnion adds Onion hidden service. If no private key is supplied one will +// be generated and the PrivateKeyType and PrivateKey properties will be set +// with the newly generated one. +// The hidden service will use port mapping contained in Ports map supplied. +// ServiceID will be assigned based on the private key and will be the address +// of this hidden service (without the ".onion" ending). +func (c *Controller) AddOnion(onion *Onion) error { + if onion == nil { + return errors.New("torgo: onion cannot be nil") + } + if len(onion.Ports) == 0 { + return errors.New("torgo: onion requires at least one port mapping") + } + req := "ADD_ONION " + // If no key is supplied set PrivateKeyType to NEW + if len(onion.PrivateKey) == 0 { + if onion.PrivateKeyType == "" { + onion.PrivateKey = "BEST" + } else { + onion.PrivateKey = onion.PrivateKeyType + } + onion.PrivateKeyType = "NEW" + } + req += fmt.Sprintf("%s:%s ", onion.PrivateKeyType, onion.PrivateKey) + for remotePort, localAddr := range onion.Ports { + req += fmt.Sprintf("Port=%d,%s ", remotePort, localAddr) + } + _, msg, err := c.makeRequest(req) + if err != nil { + return err + } + lines := strings.Split(msg, "\n") + for _, line := range lines { + parts := strings.SplitN(line, "=", 2) + if parts[0] == "ServiceID" { + onion.ServiceID = parts[1] + } else if parts[0] == "PrivateKey" { + key := strings.SplitN(parts[1], ":", 2) + onion.PrivateKeyType = key[0] + onion.PrivateKey = key[1] + } + } + return nil +} + +// DeleteOnion deletes an onion by its serviceID (stop hidden service created +// by this controller). +func (c *Controller) DeleteOnion(serviceID string) error { + _, _, err := c.makeRequest("DEL_ONION " + serviceID) + if err != nil { + return err + } + return nil +} + +// Signal sends a signal to the server. Tor documentations defines the +// following signals : +// * RELOAD +// * SHUTDOWN +// * DUMP +// * DEBUG +// * HALT +// * CLEARDNSCACHE +// * NEWNYM +// * HEARTBEAT +// * DORMANT +// * ACTIVE +func (c *Controller) Signal(signal string) error { + _, _, err := c.makeRequest("SIGNAL " + signal) + if err != nil { + return err + } + return nil +} diff --git a/vendor/github.com/wybiral/torgo/ed25519.go b/vendor/github.com/wybiral/torgo/ed25519.go new file mode 100644 index 0000000..bbdd0c7 --- /dev/null +++ b/vendor/github.com/wybiral/torgo/ed25519.go @@ -0,0 +1,57 @@ +package torgo + +import ( + "crypto/sha512" + "encoding/base32" + "encoding/base64" + "errors" + "strings" + + "golang.org/x/crypto/ed25519" + "golang.org/x/crypto/sha3" +) + +// OnionFromEd25519 returns an Onion instance from an ED25519 private key which +// can be used to start a hidden service with controller.AddOnion. +func OnionFromEd25519(pri ed25519.PrivateKey) (*Onion, error) { + pub, ok := pri.Public().(ed25519.PublicKey) + if !ok { + return nil, errors.New("torgo: unable to extract ed25519.PublicKey") + } + serviceID, err := ServiceIDFromEd25519(pub) + if err != nil { + return nil, err + } + h := sha512.Sum512(pri[:32]) + // Set bits so that h[:32] is private scalar "a" + h[0] &= 248 + h[31] &= 127 + h[31] |= 64 + // Since h[32:] is RH, h is now (a || RH) + key := base64.StdEncoding.EncodeToString(h[:]) + return &Onion{ + Ports: make(map[int]string), + ServiceID: serviceID, + PrivateKey: key, + PrivateKeyType: "ED25519-V3", + }, nil +} + +// ServiceIDFromEd25519 calculates a Tor service ID from an ed25519.PublicKey. +func ServiceIDFromEd25519(pub ed25519.PublicKey) (string, error) { + checkdigits := ed25519Checkdigits(pub) + combined := pub[:] + combined = append(combined, checkdigits...) + combined = append(combined, 0x03) + serviceID := base32.StdEncoding.EncodeToString(combined) + return strings.ToLower(serviceID), nil +} + +// ed25519Checkdigits calculates tje check digits used to create service ID. +func ed25519Checkdigits(pub ed25519.PublicKey) []byte { + checkstr := []byte(".onion checksum") + checkstr = append(checkstr, pub...) + checkstr = append(checkstr, 0x03) + checksum := sha3.Sum256(checkstr) + return checksum[:2] +} diff --git a/vendor/github.com/wybiral/torgo/onion.go b/vendor/github.com/wybiral/torgo/onion.go new file mode 100644 index 0000000..f88c8ff --- /dev/null +++ b/vendor/github.com/wybiral/torgo/onion.go @@ -0,0 +1,13 @@ +package torgo + +// Onion represents a hidden service. +type Onion struct { + // Ports maps virtual ports for the hidden service to local addresses. + Ports map[int]string + // ServiceID is the unique hidden service address (without ".onion" ending). + ServiceID string + // Base64 encoded private key for the hidden service. + PrivateKey string + // Type of private key (RSA1024 or ED25519-V3). + PrivateKeyType string +} diff --git a/vendor/github.com/wybiral/torgo/rsa.go b/vendor/github.com/wybiral/torgo/rsa.go new file mode 100644 index 0000000..c0c49b6 --- /dev/null +++ b/vendor/github.com/wybiral/torgo/rsa.go @@ -0,0 +1,46 @@ +package torgo + +import ( + "crypto/rsa" + "crypto/sha1" + "crypto/x509" + "encoding/asn1" + "encoding/base32" + "encoding/base64" + "errors" + "strings" +) + +// OnionFromRSA returns an Onion instance from a 1024 bit RSA private key which +// can be used to start a hidden service with controller.AddOnion. +func OnionFromRSA(pri *rsa.PrivateKey) (*Onion, error) { + pub, ok := pri.Public().(*rsa.PublicKey) + if !ok { + return nil, errors.New("torgo: unable to extract *rsa.PublicKey") + } + serviceID, err := ServiceIDFromRSA(pub) + if err != nil { + return nil, err + } + der := x509.MarshalPKCS1PrivateKey(pri) + key := base64.StdEncoding.EncodeToString(der) + return &Onion{ + Ports: make(map[int]string), + ServiceID: serviceID, + PrivateKey: key, + PrivateKeyType: "RSA1024", + }, nil +} + +// ServiceIDFromRSA calculates a Tor service ID from an *rsa.PublicKey. +func ServiceIDFromRSA(pub *rsa.PublicKey) (string, error) { + der, err := asn1.Marshal(*pub) + if err != nil { + return "", err + } + // Onion id is base32(firstHalf(sha1(publicKeyDER))) + hash := sha1.Sum(der) + half := hash[:len(hash)/2] + serviceID := base32.StdEncoding.EncodeToString(half) + return strings.ToLower(serviceID), nil +} diff --git a/vendor/github.com/wybiral/torgo/torgo.go b/vendor/github.com/wybiral/torgo/torgo.go new file mode 100644 index 0000000..91ec140 --- /dev/null +++ b/vendor/github.com/wybiral/torgo/torgo.go @@ -0,0 +1,2 @@ +// Package torgo provides a Golang controller interface for Tor. +package torgo diff --git a/vendor/golang.org/x/crypto/AUTHORS b/vendor/golang.org/x/crypto/AUTHORS new file mode 100644 index 0000000..2b00ddb --- /dev/null +++ b/vendor/golang.org/x/crypto/AUTHORS @@ -0,0 +1,3 @@ +# This source code refers to The Go Authors for copyright purposes. +# The master list of authors is in the main Go distribution, +# visible at https://tip.golang.org/AUTHORS. diff --git a/vendor/golang.org/x/crypto/CONTRIBUTORS b/vendor/golang.org/x/crypto/CONTRIBUTORS new file mode 100644 index 0000000..1fbd3e9 --- /dev/null +++ b/vendor/golang.org/x/crypto/CONTRIBUTORS @@ -0,0 +1,3 @@ +# This source code was written by the Go contributors. +# The master list of contributors is in the main Go distribution, +# visible at https://tip.golang.org/CONTRIBUTORS. diff --git a/vendor/golang.org/x/crypto/LICENSE b/vendor/golang.org/x/crypto/LICENSE new file mode 100644 index 0000000..6a66aea --- /dev/null +++ b/vendor/golang.org/x/crypto/LICENSE @@ -0,0 +1,27 @@ +Copyright (c) 2009 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/golang.org/x/crypto/PATENTS b/vendor/golang.org/x/crypto/PATENTS new file mode 100644 index 0000000..7330990 --- /dev/null +++ b/vendor/golang.org/x/crypto/PATENTS @@ -0,0 +1,22 @@ +Additional IP Rights Grant (Patents) + +"This implementation" means the copyrightable works distributed by +Google as part of the Go project. + +Google hereby grants to You a perpetual, worldwide, non-exclusive, +no-charge, royalty-free, irrevocable (except as stated in this section) +patent license to make, have made, use, offer to sell, sell, import, +transfer and otherwise run, modify and propagate the contents of this +implementation of Go, where such license applies only to those patent +claims, both currently owned or controlled by Google and acquired in +the future, licensable by Google that are necessarily infringed by this +implementation of Go. This grant does not include claims that would be +infringed only as a consequence of further modification of this +implementation. If you or your agent or exclusive licensee institute or +order or agree to the institution of patent litigation against any +entity (including a cross-claim or counterclaim in a lawsuit) alleging +that this implementation of Go or any code incorporated within this +implementation of Go constitutes direct or contributory patent +infringement, or inducement of patent infringement, then any patent +rights granted to you under this License for this implementation of Go +shall terminate as of the date such litigation is filed. diff --git a/vendor/golang.org/x/crypto/ed25519/ed25519.go b/vendor/golang.org/x/crypto/ed25519/ed25519.go new file mode 100644 index 0000000..c7f8c7e --- /dev/null +++ b/vendor/golang.org/x/crypto/ed25519/ed25519.go @@ -0,0 +1,222 @@ +// Copyright 2016 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// In Go 1.13, the ed25519 package was promoted to the standard library as +// crypto/ed25519, and this package became a wrapper for the standard library one. +// +// +build !go1.13 + +// Package ed25519 implements the Ed25519 signature algorithm. See +// https://ed25519.cr.yp.to/. +// +// These functions are also compatible with the “Ed25519” function defined in +// RFC 8032. However, unlike RFC 8032's formulation, this package's private key +// representation includes a public key suffix to make multiple signing +// operations with the same key more efficient. This package refers to the RFC +// 8032 private key as the “seed”. +package ed25519 + +// This code is a port of the public domain, “ref10” implementation of ed25519 +// from SUPERCOP. + +import ( + "bytes" + "crypto" + cryptorand "crypto/rand" + "crypto/sha512" + "errors" + "io" + "strconv" + + "golang.org/x/crypto/ed25519/internal/edwards25519" +) + +const ( + // PublicKeySize is the size, in bytes, of public keys as used in this package. + PublicKeySize = 32 + // PrivateKeySize is the size, in bytes, of private keys as used in this package. + PrivateKeySize = 64 + // SignatureSize is the size, in bytes, of signatures generated and verified by this package. + SignatureSize = 64 + // SeedSize is the size, in bytes, of private key seeds. These are the private key representations used by RFC 8032. + SeedSize = 32 +) + +// PublicKey is the type of Ed25519 public keys. +type PublicKey []byte + +// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer. +type PrivateKey []byte + +// Public returns the PublicKey corresponding to priv. +func (priv PrivateKey) Public() crypto.PublicKey { + publicKey := make([]byte, PublicKeySize) + copy(publicKey, priv[32:]) + return PublicKey(publicKey) +} + +// Seed returns the private key seed corresponding to priv. It is provided for +// interoperability with RFC 8032. RFC 8032's private keys correspond to seeds +// in this package. +func (priv PrivateKey) Seed() []byte { + seed := make([]byte, SeedSize) + copy(seed, priv[:32]) + return seed +} + +// Sign signs the given message with priv. +// Ed25519 performs two passes over messages to be signed and therefore cannot +// handle pre-hashed messages. Thus opts.HashFunc() must return zero to +// indicate the message hasn't been hashed. This can be achieved by passing +// crypto.Hash(0) as the value for opts. +func (priv PrivateKey) Sign(rand io.Reader, message []byte, opts crypto.SignerOpts) (signature []byte, err error) { + if opts.HashFunc() != crypto.Hash(0) { + return nil, errors.New("ed25519: cannot sign hashed message") + } + + return Sign(priv, message), nil +} + +// GenerateKey generates a public/private key pair using entropy from rand. +// If rand is nil, crypto/rand.Reader will be used. +func GenerateKey(rand io.Reader) (PublicKey, PrivateKey, error) { + if rand == nil { + rand = cryptorand.Reader + } + + seed := make([]byte, SeedSize) + if _, err := io.ReadFull(rand, seed); err != nil { + return nil, nil, err + } + + privateKey := NewKeyFromSeed(seed) + publicKey := make([]byte, PublicKeySize) + copy(publicKey, privateKey[32:]) + + return publicKey, privateKey, nil +} + +// NewKeyFromSeed calculates a private key from a seed. It will panic if +// len(seed) is not SeedSize. This function is provided for interoperability +// with RFC 8032. RFC 8032's private keys correspond to seeds in this +// package. +func NewKeyFromSeed(seed []byte) PrivateKey { + if l := len(seed); l != SeedSize { + panic("ed25519: bad seed length: " + strconv.Itoa(l)) + } + + digest := sha512.Sum512(seed) + digest[0] &= 248 + digest[31] &= 127 + digest[31] |= 64 + + var A edwards25519.ExtendedGroupElement + var hBytes [32]byte + copy(hBytes[:], digest[:]) + edwards25519.GeScalarMultBase(&A, &hBytes) + var publicKeyBytes [32]byte + A.ToBytes(&publicKeyBytes) + + privateKey := make([]byte, PrivateKeySize) + copy(privateKey, seed) + copy(privateKey[32:], publicKeyBytes[:]) + + return privateKey +} + +// Sign signs the message with privateKey and returns a signature. It will +// panic if len(privateKey) is not PrivateKeySize. +func Sign(privateKey PrivateKey, message []byte) []byte { + if l := len(privateKey); l != PrivateKeySize { + panic("ed25519: bad private key length: " + strconv.Itoa(l)) + } + + h := sha512.New() + h.Write(privateKey[:32]) + + var digest1, messageDigest, hramDigest [64]byte + var expandedSecretKey [32]byte + h.Sum(digest1[:0]) + copy(expandedSecretKey[:], digest1[:]) + expandedSecretKey[0] &= 248 + expandedSecretKey[31] &= 63 + expandedSecretKey[31] |= 64 + + h.Reset() + h.Write(digest1[32:]) + h.Write(message) + h.Sum(messageDigest[:0]) + + var messageDigestReduced [32]byte + edwards25519.ScReduce(&messageDigestReduced, &messageDigest) + var R edwards25519.ExtendedGroupElement + edwards25519.GeScalarMultBase(&R, &messageDigestReduced) + + var encodedR [32]byte + R.ToBytes(&encodedR) + + h.Reset() + h.Write(encodedR[:]) + h.Write(privateKey[32:]) + h.Write(message) + h.Sum(hramDigest[:0]) + var hramDigestReduced [32]byte + edwards25519.ScReduce(&hramDigestReduced, &hramDigest) + + var s [32]byte + edwards25519.ScMulAdd(&s, &hramDigestReduced, &expandedSecretKey, &messageDigestReduced) + + signature := make([]byte, SignatureSize) + copy(signature[:], encodedR[:]) + copy(signature[32:], s[:]) + + return signature +} + +// Verify reports whether sig is a valid signature of message by publicKey. It +// will panic if len(publicKey) is not PublicKeySize. +func Verify(publicKey PublicKey, message, sig []byte) bool { + if l := len(publicKey); l != PublicKeySize { + panic("ed25519: bad public key length: " + strconv.Itoa(l)) + } + + if len(sig) != SignatureSize || sig[63]&224 != 0 { + return false + } + + var A edwards25519.ExtendedGroupElement + var publicKeyBytes [32]byte + copy(publicKeyBytes[:], publicKey) + if !A.FromBytes(&publicKeyBytes) { + return false + } + edwards25519.FeNeg(&A.X, &A.X) + edwards25519.FeNeg(&A.T, &A.T) + + h := sha512.New() + h.Write(sig[:32]) + h.Write(publicKey[:]) + h.Write(message) + var digest [64]byte + h.Sum(digest[:0]) + + var hReduced [32]byte + edwards25519.ScReduce(&hReduced, &digest) + + var R edwards25519.ProjectiveGroupElement + var s [32]byte + copy(s[:], sig[32:]) + + // https://tools.ietf.org/html/rfc8032#section-5.1.7 requires that s be in + // the range [0, order) in order to prevent signature malleability. + if !edwards25519.ScMinimal(&s) { + return false + } + + edwards25519.GeDoubleScalarMultVartime(&R, &hReduced, &A, &s) + + var checkR [32]byte + R.ToBytes(&checkR) + return bytes.Equal(sig[:32], checkR[:]) +} diff --git a/vendor/golang.org/x/crypto/ed25519/ed25519_go113.go b/vendor/golang.org/x/crypto/ed25519/ed25519_go113.go new file mode 100644 index 0000000..d1448d8 --- /dev/null +++ b/vendor/golang.org/x/crypto/ed25519/ed25519_go113.go @@ -0,0 +1,73 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build go1.13 + +// Package ed25519 implements the Ed25519 signature algorithm. See +// https://ed25519.cr.yp.to/. +// +// These functions are also compatible with the “Ed25519” function defined in +// RFC 8032. However, unlike RFC 8032's formulation, this package's private key +// representation includes a public key suffix to make multiple signing +// operations with the same key more efficient. This package refers to the RFC +// 8032 private key as the “seed”. +// +// Beginning with Go 1.13, the functionality of this package was moved to the +// standard library as crypto/ed25519. This package only acts as a compatibility +// wrapper. +package ed25519 + +import ( + "crypto/ed25519" + "io" +) + +const ( + // PublicKeySize is the size, in bytes, of public keys as used in this package. + PublicKeySize = 32 + // PrivateKeySize is the size, in bytes, of private keys as used in this package. + PrivateKeySize = 64 + // SignatureSize is the size, in bytes, of signatures generated and verified by this package. + SignatureSize = 64 + // SeedSize is the size, in bytes, of private key seeds. These are the private key representations used by RFC 8032. + SeedSize = 32 +) + +// PublicKey is the type of Ed25519 public keys. +// +// This type is an alias for crypto/ed25519's PublicKey type. +// See the crypto/ed25519 package for the methods on this type. +type PublicKey = ed25519.PublicKey + +// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer. +// +// This type is an alias for crypto/ed25519's PrivateKey type. +// See the crypto/ed25519 package for the methods on this type. +type PrivateKey = ed25519.PrivateKey + +// GenerateKey generates a public/private key pair using entropy from rand. +// If rand is nil, crypto/rand.Reader will be used. +func GenerateKey(rand io.Reader) (PublicKey, PrivateKey, error) { + return ed25519.GenerateKey(rand) +} + +// NewKeyFromSeed calculates a private key from a seed. It will panic if +// len(seed) is not SeedSize. This function is provided for interoperability +// with RFC 8032. RFC 8032's private keys correspond to seeds in this +// package. +func NewKeyFromSeed(seed []byte) PrivateKey { + return ed25519.NewKeyFromSeed(seed) +} + +// Sign signs the message with privateKey and returns a signature. It will +// panic if len(privateKey) is not PrivateKeySize. +func Sign(privateKey PrivateKey, message []byte) []byte { + return ed25519.Sign(privateKey, message) +} + +// Verify reports whether sig is a valid signature of message by publicKey. It +// will panic if len(publicKey) is not PublicKeySize. +func Verify(publicKey PublicKey, message, sig []byte) bool { + return ed25519.Verify(publicKey, message, sig) +} diff --git a/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go new file mode 100644 index 0000000..e39f086 --- /dev/null +++ b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go @@ -0,0 +1,1422 @@ +// Copyright 2016 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package edwards25519 + +// These values are from the public domain, “ref10” implementation of ed25519 +// from SUPERCOP. + +// d is a constant in the Edwards curve equation. +var d = FieldElement{ + -10913610, 13857413, -15372611, 6949391, 114729, -8787816, -6275908, -3247719, -18696448, -12055116, +} + +// d2 is 2*d. +var d2 = FieldElement{ + -21827239, -5839606, -30745221, 13898782, 229458, 15978800, -12551817, -6495438, 29715968, 9444199, +} + +// SqrtM1 is the square-root of -1 in the field. +var SqrtM1 = FieldElement{ + -32595792, -7943725, 9377950, 3500415, 12389472, -272473, -25146209, -2005654, 326686, 11406482, +} + +// A is a constant in the Montgomery-form of curve25519. +var A = FieldElement{ + 486662, 0, 0, 0, 0, 0, 0, 0, 0, 0, +} + +// bi contains precomputed multiples of the base-point. See the Ed25519 paper +// for a discussion about how these values are used. +var bi = [8]PreComputedGroupElement{ + { + FieldElement{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605}, + FieldElement{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378}, + FieldElement{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546}, + }, + { + FieldElement{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024}, + FieldElement{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574}, + FieldElement{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357}, + }, + { + FieldElement{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380}, + FieldElement{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306}, + FieldElement{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942}, + }, + { + FieldElement{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766}, + FieldElement{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701}, + FieldElement{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300}, + }, + { + FieldElement{-22518993, -6692182, 14201702, -8745502, -23510406, 8844726, 18474211, -1361450, -13062696, 13821877}, + FieldElement{-6455177, -7839871, 3374702, -4740862, -27098617, -10571707, 31655028, -7212327, 18853322, -14220951}, + FieldElement{4566830, -12963868, -28974889, -12240689, -7602672, -2830569, -8514358, -10431137, 2207753, -3209784}, + }, + { + FieldElement{-25154831, -4185821, 29681144, 7868801, -6854661, -9423865, -12437364, -663000, -31111463, -16132436}, + FieldElement{25576264, -2703214, 7349804, -11814844, 16472782, 9300885, 3844789, 15725684, 171356, 6466918}, + FieldElement{23103977, 13316479, 9739013, -16149481, 817875, -15038942, 8965339, -14088058, -30714912, 16193877}, + }, + { + FieldElement{-33521811, 3180713, -2394130, 14003687, -16903474, -16270840, 17238398, 4729455, -18074513, 9256800}, + FieldElement{-25182317, -4174131, 32336398, 5036987, -21236817, 11360617, 22616405, 9761698, -19827198, 630305}, + FieldElement{-13720693, 2639453, -24237460, -7406481, 9494427, -5774029, -6554551, -15960994, -2449256, -14291300}, + }, + { + FieldElement{-3151181, -5046075, 9282714, 6866145, -31907062, -863023, -18940575, 15033784, 25105118, -7894876}, + FieldElement{-24326370, 15950226, -31801215, -14592823, -11662737, -5090925, 1573892, -2625887, 2198790, -15804619}, + FieldElement{-3099351, 10324967, -2241613, 7453183, -5446979, -2735503, -13812022, -16236442, -32461234, -12290683}, + }, +} + +// base contains precomputed multiples of the base-point. See the Ed25519 paper +// for a discussion about how these values are used. +var base = [32][8]PreComputedGroupElement{ + { + { + FieldElement{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605}, + FieldElement{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378}, + FieldElement{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546}, + }, + { + FieldElement{-12815894, -12976347, -21581243, 11784320, -25355658, -2750717, -11717903, -3814571, -358445, -10211303}, + FieldElement{-21703237, 6903825, 27185491, 6451973, -29577724, -9554005, -15616551, 11189268, -26829678, -5319081}, + FieldElement{26966642, 11152617, 32442495, 15396054, 14353839, -12752335, -3128826, -9541118, -15472047, -4166697}, + }, + { + FieldElement{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024}, + FieldElement{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574}, + FieldElement{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357}, + }, + { + FieldElement{-17036878, 13921892, 10945806, -6033431, 27105052, -16084379, -28926210, 15006023, 3284568, -6276540}, + FieldElement{23599295, -8306047, -11193664, -7687416, 13236774, 10506355, 7464579, 9656445, 13059162, 10374397}, + FieldElement{7798556, 16710257, 3033922, 2874086, 28997861, 2835604, 32406664, -3839045, -641708, -101325}, + }, + { + FieldElement{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380}, + FieldElement{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306}, + FieldElement{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942}, + }, + { + FieldElement{-15371964, -12862754, 32573250, 4720197, -26436522, 5875511, -19188627, -15224819, -9818940, -12085777}, + FieldElement{-8549212, 109983, 15149363, 2178705, 22900618, 4543417, 3044240, -15689887, 1762328, 14866737}, + FieldElement{-18199695, -15951423, -10473290, 1707278, -17185920, 3916101, -28236412, 3959421, 27914454, 4383652}, + }, + { + FieldElement{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766}, + FieldElement{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701}, + FieldElement{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300}, + }, + { + FieldElement{14499471, -2729599, -33191113, -4254652, 28494862, 14271267, 30290735, 10876454, -33154098, 2381726}, + FieldElement{-7195431, -2655363, -14730155, 462251, -27724326, 3941372, -6236617, 3696005, -32300832, 15351955}, + FieldElement{27431194, 8222322, 16448760, -3907995, -18707002, 11938355, -32961401, -2970515, 29551813, 10109425}, + }, + }, + { + { + FieldElement{-13657040, -13155431, -31283750, 11777098, 21447386, 6519384, -2378284, -1627556, 10092783, -4764171}, + FieldElement{27939166, 14210322, 4677035, 16277044, -22964462, -12398139, -32508754, 12005538, -17810127, 12803510}, + FieldElement{17228999, -15661624, -1233527, 300140, -1224870, -11714777, 30364213, -9038194, 18016357, 4397660}, + }, + { + FieldElement{-10958843, -7690207, 4776341, -14954238, 27850028, -15602212, -26619106, 14544525, -17477504, 982639}, + FieldElement{29253598, 15796703, -2863982, -9908884, 10057023, 3163536, 7332899, -4120128, -21047696, 9934963}, + FieldElement{5793303, 16271923, -24131614, -10116404, 29188560, 1206517, -14747930, 4559895, -30123922, -10897950}, + }, + { + FieldElement{-27643952, -11493006, 16282657, -11036493, 28414021, -15012264, 24191034, 4541697, -13338309, 5500568}, + FieldElement{12650548, -1497113, 9052871, 11355358, -17680037, -8400164, -17430592, 12264343, 10874051, 13524335}, + FieldElement{25556948, -3045990, 714651, 2510400, 23394682, -10415330, 33119038, 5080568, -22528059, 5376628}, + }, + { + FieldElement{-26088264, -4011052, -17013699, -3537628, -6726793, 1920897, -22321305, -9447443, 4535768, 1569007}, + FieldElement{-2255422, 14606630, -21692440, -8039818, 28430649, 8775819, -30494562, 3044290, 31848280, 12543772}, + FieldElement{-22028579, 2943893, -31857513, 6777306, 13784462, -4292203, -27377195, -2062731, 7718482, 14474653}, + }, + { + FieldElement{2385315, 2454213, -22631320, 46603, -4437935, -15680415, 656965, -7236665, 24316168, -5253567}, + FieldElement{13741529, 10911568, -33233417, -8603737, -20177830, -1033297, 33040651, -13424532, -20729456, 8321686}, + FieldElement{21060490, -2212744, 15712757, -4336099, 1639040, 10656336, 23845965, -11874838, -9984458, 608372}, + }, + { + FieldElement{-13672732, -15087586, -10889693, -7557059, -6036909, 11305547, 1123968, -6780577, 27229399, 23887}, + FieldElement{-23244140, -294205, -11744728, 14712571, -29465699, -2029617, 12797024, -6440308, -1633405, 16678954}, + FieldElement{-29500620, 4770662, -16054387, 14001338, 7830047, 9564805, -1508144, -4795045, -17169265, 4904953}, + }, + { + FieldElement{24059557, 14617003, 19037157, -15039908, 19766093, -14906429, 5169211, 16191880, 2128236, -4326833}, + FieldElement{-16981152, 4124966, -8540610, -10653797, 30336522, -14105247, -29806336, 916033, -6882542, -2986532}, + FieldElement{-22630907, 12419372, -7134229, -7473371, -16478904, 16739175, 285431, 2763829, 15736322, 4143876}, + }, + { + FieldElement{2379352, 11839345, -4110402, -5988665, 11274298, 794957, 212801, -14594663, 23527084, -16458268}, + FieldElement{33431127, -11130478, -17838966, -15626900, 8909499, 8376530, -32625340, 4087881, -15188911, -14416214}, + FieldElement{1767683, 7197987, -13205226, -2022635, -13091350, 448826, 5799055, 4357868, -4774191, -16323038}, + }, + }, + { + { + FieldElement{6721966, 13833823, -23523388, -1551314, 26354293, -11863321, 23365147, -3949732, 7390890, 2759800}, + 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-7839692, -7852844, -8138429}, + FieldElement{-15236356, -15433509, 7766470, 746860, 26346930, -10221762, -27333451, 10754588, -9431476, 5203576}, + FieldElement{31834314, 14135496, -770007, 5159118, 20917671, -16768096, -7467973, -7337524, 31809243, 7347066}, + }, + { + FieldElement{-9606723, -11874240, 20414459, 13033986, 13716524, -11691881, 19797970, -12211255, 15192876, -2087490}, + FieldElement{-12663563, -2181719, 1168162, -3804809, 26747877, -14138091, 10609330, 12694420, 33473243, -13382104}, + FieldElement{33184999, 11180355, 15832085, -11385430, -1633671, 225884, 15089336, -11023903, -6135662, 14480053}, + }, + { + FieldElement{31308717, -5619998, 31030840, -1897099, 15674547, -6582883, 5496208, 13685227, 27595050, 8737275}, + FieldElement{-20318852, -15150239, 10933843, -16178022, 8335352, -7546022, -31008351, -12610604, 26498114, 66511}, + FieldElement{22644454, -8761729, -16671776, 4884562, -3105614, -13559366, 30540766, -4286747, -13327787, -7515095}, + }, + { + FieldElement{-28017847, 9834845, 18617207, -2681312, -3401956, -13307506, 8205540, 13585437, -17127465, 15115439}, + FieldElement{23711543, -672915, 31206561, -8362711, 6164647, -9709987, -33535882, -1426096, 8236921, 16492939}, + FieldElement{-23910559, -13515526, -26299483, -4503841, 25005590, -7687270, 19574902, 10071562, 6708380, -6222424}, + }, + { + FieldElement{2101391, -4930054, 19702731, 2367575, -15427167, 1047675, 5301017, 9328700, 29955601, -11678310}, + FieldElement{3096359, 9271816, -21620864, -15521844, -14847996, -7592937, -25892142, -12635595, -9917575, 6216608}, + FieldElement{-32615849, 338663, -25195611, 2510422, -29213566, -13820213, 24822830, -6146567, -26767480, 7525079}, + }, + { + FieldElement{-23066649, -13985623, 16133487, -7896178, -3389565, 778788, -910336, -2782495, -19386633, 11994101}, + FieldElement{21691500, -13624626, -641331, -14367021, 3285881, -3483596, -25064666, 9718258, -7477437, 13381418}, + FieldElement{18445390, -4202236, 14979846, 11622458, -1727110, -3582980, 23111648, -6375247, 28535282, 15779576}, + }, + { + FieldElement{30098053, 3089662, -9234387, 16662135, -21306940, 11308411, -14068454, 12021730, 9955285, -16303356}, + FieldElement{9734894, -14576830, -7473633, -9138735, 2060392, 11313496, -18426029, 9924399, 20194861, 13380996}, + FieldElement{-26378102, -7965207, -22167821, 15789297, -18055342, -6168792, -1984914, 15707771, 26342023, 10146099}, + }, + }, + { + { + FieldElement{-26016874, -219943, 21339191, -41388, 19745256, -2878700, -29637280, 2227040, 21612326, -545728}, + FieldElement{-13077387, 1184228, 23562814, -5970442, -20351244, -6348714, 25764461, 12243797, -20856566, 11649658}, + FieldElement{-10031494, 11262626, 27384172, 2271902, 26947504, -15997771, 39944, 6114064, 33514190, 2333242}, + }, + { + FieldElement{-21433588, -12421821, 8119782, 7219913, -21830522, -9016134, -6679750, -12670638, 24350578, -13450001}, + FieldElement{-4116307, -11271533, -23886186, 4843615, -30088339, 690623, -31536088, -10406836, 8317860, 12352766}, + FieldElement{18200138, -14475911, -33087759, -2696619, -23702521, -9102511, -23552096, -2287550, 20712163, 6719373}, + }, + { + FieldElement{26656208, 6075253, -7858556, 1886072, -28344043, 4262326, 11117530, -3763210, 26224235, -3297458}, + FieldElement{-17168938, -14854097, -3395676, -16369877, -19954045, 14050420, 21728352, 9493610, 18620611, -16428628}, + FieldElement{-13323321, 13325349, 11432106, 5964811, 18609221, 6062965, -5269471, -9725556, -30701573, -16479657}, + }, + { + FieldElement{-23860538, -11233159, 26961357, 1640861, -32413112, -16737940, 12248509, -5240639, 13735342, 1934062}, + FieldElement{25089769, 6742589, 17081145, -13406266, 21909293, -16067981, -15136294, -3765346, -21277997, 5473616}, + FieldElement{31883677, -7961101, 1083432, -11572403, 22828471, 13290673, -7125085, 12469656, 29111212, -5451014}, + }, + { + FieldElement{24244947, -15050407, -26262976, 2791540, -14997599, 16666678, 24367466, 6388839, -10295587, 452383}, + FieldElement{-25640782, -3417841, 5217916, 16224624, 19987036, -4082269, -24236251, -5915248, 15766062, 8407814}, + FieldElement{-20406999, 13990231, 15495425, 16395525, 5377168, 15166495, -8917023, -4388953, -8067909, 2276718}, + }, + { + FieldElement{30157918, 12924066, -17712050, 9245753, 19895028, 3368142, -23827587, 5096219, 22740376, -7303417}, + FieldElement{2041139, -14256350, 7783687, 13876377, -25946985, -13352459, 24051124, 13742383, -15637599, 13295222}, + FieldElement{33338237, -8505733, 12532113, 7977527, 9106186, -1715251, -17720195, -4612972, -4451357, -14669444}, + }, + { + FieldElement{-20045281, 5454097, -14346548, 6447146, 28862071, 1883651, -2469266, -4141880, 7770569, 9620597}, + FieldElement{23208068, 7979712, 33071466, 8149229, 1758231, -10834995, 30945528, -1694323, -33502340, -14767970}, + FieldElement{1439958, -16270480, -1079989, -793782, 4625402, 10647766, -5043801, 1220118, 30494170, -11440799}, + }, + { + FieldElement{-5037580, -13028295, -2970559, -3061767, 15640974, -6701666, -26739026, 926050, -1684339, -13333647}, + FieldElement{13908495, -3549272, 30919928, -6273825, -21521863, 7989039, 9021034, 9078865, 3353509, 4033511}, + FieldElement{-29663431, -15113610, 32259991, -344482, 24295849, -12912123, 23161163, 8839127, 27485041, 7356032}, + }, + }, + { + { + FieldElement{9661027, 705443, 11980065, -5370154, -1628543, 14661173, -6346142, 2625015, 28431036, -16771834}, + FieldElement{-23839233, -8311415, -25945511, 7480958, -17681669, -8354183, -22545972, 14150565, 15970762, 4099461}, + FieldElement{29262576, 16756590, 26350592, -8793563, 8529671, -11208050, 13617293, -9937143, 11465739, 8317062}, + }, + { + FieldElement{-25493081, -6962928, 32500200, -9419051, -23038724, -2302222, 14898637, 3848455, 20969334, -5157516}, + FieldElement{-20384450, -14347713, -18336405, 13884722, -33039454, 2842114, -21610826, -3649888, 11177095, 14989547}, + FieldElement{-24496721, -11716016, 16959896, 2278463, 12066309, 10137771, 13515641, 2581286, -28487508, 9930240}, + }, + { + FieldElement{-17751622, -2097826, 16544300, -13009300, -15914807, -14949081, 18345767, -13403753, 16291481, -5314038}, + FieldElement{-33229194, 2553288, 32678213, 9875984, 8534129, 6889387, -9676774, 6957617, 4368891, 9788741}, + FieldElement{16660756, 7281060, -10830758, 12911820, 20108584, -8101676, -21722536, -8613148, 16250552, -11111103}, + }, + { + FieldElement{-19765507, 2390526, -16551031, 14161980, 1905286, 6414907, 4689584, 10604807, -30190403, 4782747}, + FieldElement{-1354539, 14736941, -7367442, -13292886, 7710542, -14155590, -9981571, 4383045, 22546403, 437323}, + FieldElement{31665577, -12180464, -16186830, 1491339, -18368625, 3294682, 27343084, 2786261, -30633590, -14097016}, + }, + { + FieldElement{-14467279, -683715, -33374107, 7448552, 19294360, 14334329, -19690631, 2355319, -19284671, -6114373}, + FieldElement{15121312, -15796162, 6377020, -6031361, -10798111, -12957845, 18952177, 15496498, -29380133, 11754228}, + FieldElement{-2637277, -13483075, 8488727, -14303896, 12728761, -1622493, 7141596, 11724556, 22761615, -10134141}, + }, + { + FieldElement{16918416, 11729663, -18083579, 3022987, -31015732, -13339659, -28741185, -12227393, 32851222, 11717399}, + FieldElement{11166634, 7338049, -6722523, 4531520, -29468672, -7302055, 31474879, 3483633, -1193175, -4030831}, + FieldElement{-185635, 9921305, 31456609, -13536438, -12013818, 13348923, 33142652, 6546660, -19985279, -3948376}, + }, + { + FieldElement{-32460596, 11266712, -11197107, -7899103, 31703694, 3855903, -8537131, -12833048, -30772034, -15486313}, + FieldElement{-18006477, 12709068, 3991746, -6479188, -21491523, -10550425, -31135347, -16049879, 10928917, 3011958}, + FieldElement{-6957757, -15594337, 31696059, 334240, 29576716, 14796075, -30831056, -12805180, 18008031, 10258577}, + }, + { + FieldElement{-22448644, 15655569, 7018479, -4410003, -30314266, -1201591, -1853465, 1367120, 25127874, 6671743}, + FieldElement{29701166, -14373934, -10878120, 9279288, -17568, 13127210, 21382910, 11042292, 25838796, 4642684}, + FieldElement{-20430234, 14955537, -24126347, 8124619, -5369288, -5990470, 30468147, -13900640, 18423289, 4177476}, + }, + }, +} diff --git a/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go new file mode 100644 index 0000000..fd03c25 --- /dev/null +++ b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go @@ -0,0 +1,1793 @@ +// Copyright 2016 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package edwards25519 + +import "encoding/binary" + +// This code is a port of the public domain, “ref10” implementation of ed25519 +// from SUPERCOP. + +// FieldElement represents an element of the field GF(2^255 - 19). An element +// t, entries t[0]...t[9], represents the integer t[0]+2^26 t[1]+2^51 t[2]+2^77 +// t[3]+2^102 t[4]+...+2^230 t[9]. Bounds on each t[i] vary depending on +// context. +type FieldElement [10]int32 + +var zero FieldElement + +func FeZero(fe *FieldElement) { + copy(fe[:], zero[:]) +} + +func FeOne(fe *FieldElement) { + FeZero(fe) + fe[0] = 1 +} + +func FeAdd(dst, a, b *FieldElement) { + dst[0] = a[0] + b[0] + dst[1] = a[1] + b[1] + dst[2] = a[2] + b[2] + dst[3] = a[3] + b[3] + dst[4] = a[4] + b[4] + dst[5] = a[5] + b[5] + dst[6] = a[6] + b[6] + dst[7] = a[7] + b[7] + dst[8] = a[8] + b[8] + dst[9] = a[9] + b[9] +} + +func FeSub(dst, a, b *FieldElement) { + dst[0] = a[0] - b[0] + dst[1] = a[1] - b[1] + dst[2] = a[2] - b[2] + dst[3] = a[3] - b[3] + dst[4] = a[4] - b[4] + dst[5] = a[5] - b[5] + dst[6] = a[6] - b[6] + dst[7] = a[7] - b[7] + dst[8] = a[8] - b[8] + dst[9] = a[9] - b[9] +} + +func FeCopy(dst, src *FieldElement) { + copy(dst[:], src[:]) +} + +// Replace (f,g) with (g,g) if b == 1; +// replace (f,g) with (f,g) if b == 0. +// +// Preconditions: b in {0,1}. +func FeCMove(f, g *FieldElement, b int32) { + b = -b + f[0] ^= b & (f[0] ^ g[0]) + f[1] ^= b & (f[1] ^ g[1]) + f[2] ^= b & (f[2] ^ g[2]) + f[3] ^= b & (f[3] ^ g[3]) + f[4] ^= b & (f[4] ^ g[4]) + f[5] ^= b & (f[5] ^ g[5]) + f[6] ^= b & (f[6] ^ g[6]) + f[7] ^= b & (f[7] ^ g[7]) + f[8] ^= b & (f[8] ^ g[8]) + f[9] ^= b & (f[9] ^ g[9]) +} + +func load3(in []byte) int64 { + var r int64 + r = int64(in[0]) + r |= int64(in[1]) << 8 + r |= int64(in[2]) << 16 + return r +} + +func load4(in []byte) int64 { + var r int64 + r = int64(in[0]) + r |= int64(in[1]) << 8 + r |= int64(in[2]) << 16 + r |= int64(in[3]) << 24 + return r +} + +func FeFromBytes(dst *FieldElement, src *[32]byte) { + h0 := load4(src[:]) + h1 := load3(src[4:]) << 6 + h2 := load3(src[7:]) << 5 + h3 := load3(src[10:]) << 3 + h4 := load3(src[13:]) << 2 + h5 := load4(src[16:]) + h6 := load3(src[20:]) << 7 + h7 := load3(src[23:]) << 5 + h8 := load3(src[26:]) << 4 + h9 := (load3(src[29:]) & 8388607) << 2 + + FeCombine(dst, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9) +} + +// FeToBytes marshals h to s. +// Preconditions: +// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +// +// Write p=2^255-19; q=floor(h/p). +// Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))). +// +// Proof: +// Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4. +// Also have |h-2^230 h9|<2^230 so |19 2^(-255)(h-2^230 h9)|<1/4. +// +// Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9). +// Then 0> 25 + q = (h[0] + q) >> 26 + q = (h[1] + q) >> 25 + q = (h[2] + q) >> 26 + q = (h[3] + q) >> 25 + q = (h[4] + q) >> 26 + q = (h[5] + q) >> 25 + q = (h[6] + q) >> 26 + q = (h[7] + q) >> 25 + q = (h[8] + q) >> 26 + q = (h[9] + q) >> 25 + + // Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20. + h[0] += 19 * q + // Goal: Output h-2^255 q, which is between 0 and 2^255-20. + + carry[0] = h[0] >> 26 + h[1] += carry[0] + h[0] -= carry[0] << 26 + carry[1] = h[1] >> 25 + h[2] += carry[1] + h[1] -= carry[1] << 25 + carry[2] = h[2] >> 26 + h[3] += carry[2] + h[2] -= carry[2] << 26 + carry[3] = h[3] >> 25 + h[4] += carry[3] + h[3] -= carry[3] << 25 + carry[4] = h[4] >> 26 + h[5] += carry[4] + h[4] -= carry[4] << 26 + carry[5] = h[5] >> 25 + h[6] += carry[5] + h[5] -= carry[5] << 25 + carry[6] = h[6] >> 26 + h[7] += carry[6] + h[6] -= carry[6] << 26 + carry[7] = h[7] >> 25 + h[8] += carry[7] + h[7] -= carry[7] << 25 + carry[8] = h[8] >> 26 + h[9] += carry[8] + h[8] -= carry[8] << 26 + carry[9] = h[9] >> 25 + h[9] -= carry[9] << 25 + // h10 = carry9 + + // Goal: Output h[0]+...+2^255 h10-2^255 q, which is between 0 and 2^255-20. + // Have h[0]+...+2^230 h[9] between 0 and 2^255-1; + // evidently 2^255 h10-2^255 q = 0. + // Goal: Output h[0]+...+2^230 h[9]. + + s[0] = byte(h[0] >> 0) + s[1] = byte(h[0] >> 8) + s[2] = byte(h[0] >> 16) + s[3] = byte((h[0] >> 24) | (h[1] << 2)) + s[4] = byte(h[1] >> 6) + s[5] = byte(h[1] >> 14) + s[6] = byte((h[1] >> 22) | (h[2] << 3)) + s[7] = byte(h[2] >> 5) + s[8] = byte(h[2] >> 13) + s[9] = byte((h[2] >> 21) | (h[3] << 5)) + s[10] = byte(h[3] >> 3) + s[11] = byte(h[3] >> 11) + s[12] = byte((h[3] >> 19) | (h[4] << 6)) + s[13] = byte(h[4] >> 2) + s[14] = byte(h[4] >> 10) + s[15] = byte(h[4] >> 18) + s[16] = byte(h[5] >> 0) + s[17] = byte(h[5] >> 8) + s[18] = byte(h[5] >> 16) + s[19] = byte((h[5] >> 24) | (h[6] << 1)) + s[20] = byte(h[6] >> 7) + s[21] = byte(h[6] >> 15) + s[22] = byte((h[6] >> 23) | (h[7] << 3)) + s[23] = byte(h[7] >> 5) + s[24] = byte(h[7] >> 13) + s[25] = byte((h[7] >> 21) | (h[8] << 4)) + s[26] = byte(h[8] >> 4) + s[27] = byte(h[8] >> 12) + s[28] = byte((h[8] >> 20) | (h[9] << 6)) + s[29] = byte(h[9] >> 2) + s[30] = byte(h[9] >> 10) + s[31] = byte(h[9] >> 18) +} + +func FeIsNegative(f *FieldElement) byte { + var s [32]byte + FeToBytes(&s, f) + return s[0] & 1 +} + +func FeIsNonZero(f *FieldElement) int32 { + var s [32]byte + FeToBytes(&s, f) + var x uint8 + for _, b := range s { + x |= b + } + x |= x >> 4 + x |= x >> 2 + x |= x >> 1 + return int32(x & 1) +} + +// FeNeg sets h = -f +// +// Preconditions: +// |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +// +// Postconditions: +// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +func FeNeg(h, f *FieldElement) { + h[0] = -f[0] + h[1] = -f[1] + h[2] = -f[2] + h[3] = -f[3] + h[4] = -f[4] + h[5] = -f[5] + h[6] = -f[6] + h[7] = -f[7] + h[8] = -f[8] + h[9] = -f[9] +} + +func FeCombine(h *FieldElement, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 int64) { + var c0, c1, c2, c3, c4, c5, c6, c7, c8, c9 int64 + + /* + |h0| <= (1.1*1.1*2^52*(1+19+19+19+19)+1.1*1.1*2^50*(38+38+38+38+38)) + i.e. |h0| <= 1.2*2^59; narrower ranges for h2, h4, h6, h8 + |h1| <= (1.1*1.1*2^51*(1+1+19+19+19+19+19+19+19+19)) + i.e. |h1| <= 1.5*2^58; narrower ranges for h3, h5, h7, h9 + */ + + c0 = (h0 + (1 << 25)) >> 26 + h1 += c0 + h0 -= c0 << 26 + c4 = (h4 + (1 << 25)) >> 26 + h5 += c4 + h4 -= c4 << 26 + /* |h0| <= 2^25 */ + /* |h4| <= 2^25 */ + /* |h1| <= 1.51*2^58 */ + /* |h5| <= 1.51*2^58 */ + + c1 = (h1 + (1 << 24)) >> 25 + h2 += c1 + h1 -= c1 << 25 + c5 = (h5 + (1 << 24)) >> 25 + h6 += c5 + h5 -= c5 << 25 + /* |h1| <= 2^24; from now on fits into int32 */ + /* |h5| <= 2^24; from now on fits into int32 */ + /* |h2| <= 1.21*2^59 */ + /* |h6| <= 1.21*2^59 */ + + c2 = (h2 + (1 << 25)) >> 26 + h3 += c2 + h2 -= c2 << 26 + c6 = (h6 + (1 << 25)) >> 26 + h7 += c6 + h6 -= c6 << 26 + /* |h2| <= 2^25; from now on fits into int32 unchanged */ + /* |h6| <= 2^25; from now on fits into int32 unchanged */ + /* |h3| <= 1.51*2^58 */ + /* |h7| <= 1.51*2^58 */ + + c3 = (h3 + (1 << 24)) >> 25 + h4 += c3 + h3 -= c3 << 25 + c7 = (h7 + (1 << 24)) >> 25 + h8 += c7 + h7 -= c7 << 25 + /* |h3| <= 2^24; from now on fits into int32 unchanged */ + /* |h7| <= 2^24; from now on fits into int32 unchanged */ + /* |h4| <= 1.52*2^33 */ + /* |h8| <= 1.52*2^33 */ + + c4 = (h4 + (1 << 25)) >> 26 + h5 += c4 + h4 -= c4 << 26 + c8 = (h8 + (1 << 25)) >> 26 + h9 += c8 + h8 -= c8 << 26 + /* |h4| <= 2^25; from now on fits into int32 unchanged */ + /* |h8| <= 2^25; from now on fits into int32 unchanged */ + /* |h5| <= 1.01*2^24 */ + /* |h9| <= 1.51*2^58 */ + + c9 = (h9 + (1 << 24)) >> 25 + h0 += c9 * 19 + h9 -= c9 << 25 + /* |h9| <= 2^24; from now on fits into int32 unchanged */ + /* |h0| <= 1.8*2^37 */ + + c0 = (h0 + (1 << 25)) >> 26 + h1 += c0 + h0 -= c0 << 26 + /* |h0| <= 2^25; from now on fits into int32 unchanged */ + /* |h1| <= 1.01*2^24 */ + + h[0] = int32(h0) + h[1] = int32(h1) + h[2] = int32(h2) + h[3] = int32(h3) + h[4] = int32(h4) + h[5] = int32(h5) + h[6] = int32(h6) + h[7] = int32(h7) + h[8] = int32(h8) + h[9] = int32(h9) +} + +// FeMul calculates h = f * g +// Can overlap h with f or g. +// +// Preconditions: +// |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. +// |g| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. +// +// Postconditions: +// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +// +// Notes on implementation strategy: +// +// Using schoolbook multiplication. +// Karatsuba would save a little in some cost models. +// +// Most multiplications by 2 and 19 are 32-bit precomputations; +// cheaper than 64-bit postcomputations. +// +// There is one remaining multiplication by 19 in the carry chain; +// one *19 precomputation can be merged into this, +// but the resulting data flow is considerably less clean. +// +// There are 12 carries below. +// 10 of them are 2-way parallelizable and vectorizable. +// Can get away with 11 carries, but then data flow is much deeper. +// +// With tighter constraints on inputs, can squeeze carries into int32. +func FeMul(h, f, g *FieldElement) { + f0 := int64(f[0]) + f1 := int64(f[1]) + f2 := int64(f[2]) + f3 := int64(f[3]) + f4 := int64(f[4]) + f5 := int64(f[5]) + f6 := int64(f[6]) + f7 := int64(f[7]) + f8 := int64(f[8]) + f9 := int64(f[9]) + + f1_2 := int64(2 * f[1]) + f3_2 := int64(2 * f[3]) + f5_2 := int64(2 * f[5]) + f7_2 := int64(2 * f[7]) + f9_2 := int64(2 * f[9]) + + g0 := int64(g[0]) + g1 := int64(g[1]) + g2 := int64(g[2]) + g3 := int64(g[3]) + g4 := int64(g[4]) + g5 := int64(g[5]) + g6 := int64(g[6]) + g7 := int64(g[7]) + g8 := int64(g[8]) + g9 := int64(g[9]) + + g1_19 := int64(19 * g[1]) /* 1.4*2^29 */ + g2_19 := int64(19 * g[2]) /* 1.4*2^30; still ok */ + g3_19 := int64(19 * g[3]) + g4_19 := int64(19 * g[4]) + g5_19 := int64(19 * g[5]) + g6_19 := int64(19 * g[6]) + g7_19 := int64(19 * g[7]) + g8_19 := int64(19 * g[8]) + g9_19 := int64(19 * g[9]) + + h0 := f0*g0 + f1_2*g9_19 + f2*g8_19 + f3_2*g7_19 + f4*g6_19 + f5_2*g5_19 + f6*g4_19 + f7_2*g3_19 + f8*g2_19 + f9_2*g1_19 + h1 := f0*g1 + f1*g0 + f2*g9_19 + f3*g8_19 + f4*g7_19 + f5*g6_19 + f6*g5_19 + f7*g4_19 + f8*g3_19 + f9*g2_19 + h2 := f0*g2 + f1_2*g1 + f2*g0 + f3_2*g9_19 + f4*g8_19 + f5_2*g7_19 + f6*g6_19 + f7_2*g5_19 + f8*g4_19 + f9_2*g3_19 + h3 := f0*g3 + f1*g2 + f2*g1 + f3*g0 + f4*g9_19 + f5*g8_19 + f6*g7_19 + f7*g6_19 + f8*g5_19 + f9*g4_19 + h4 := f0*g4 + f1_2*g3 + f2*g2 + f3_2*g1 + f4*g0 + f5_2*g9_19 + f6*g8_19 + f7_2*g7_19 + f8*g6_19 + f9_2*g5_19 + h5 := f0*g5 + f1*g4 + f2*g3 + f3*g2 + f4*g1 + f5*g0 + f6*g9_19 + f7*g8_19 + f8*g7_19 + f9*g6_19 + h6 := f0*g6 + f1_2*g5 + f2*g4 + f3_2*g3 + f4*g2 + f5_2*g1 + f6*g0 + f7_2*g9_19 + f8*g8_19 + f9_2*g7_19 + h7 := f0*g7 + f1*g6 + f2*g5 + f3*g4 + f4*g3 + f5*g2 + f6*g1 + f7*g0 + f8*g9_19 + f9*g8_19 + h8 := f0*g8 + f1_2*g7 + f2*g6 + f3_2*g5 + f4*g4 + f5_2*g3 + f6*g2 + f7_2*g1 + f8*g0 + f9_2*g9_19 + h9 := f0*g9 + f1*g8 + f2*g7 + f3*g6 + f4*g5 + f5*g4 + f6*g3 + f7*g2 + f8*g1 + f9*g0 + + FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9) +} + +func feSquare(f *FieldElement) (h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 int64) { + f0 := int64(f[0]) + f1 := int64(f[1]) + f2 := int64(f[2]) + f3 := int64(f[3]) + f4 := int64(f[4]) + f5 := int64(f[5]) + f6 := int64(f[6]) + f7 := int64(f[7]) + f8 := int64(f[8]) + f9 := int64(f[9]) + f0_2 := int64(2 * f[0]) + f1_2 := int64(2 * f[1]) + f2_2 := int64(2 * f[2]) + f3_2 := int64(2 * f[3]) + f4_2 := int64(2 * f[4]) + f5_2 := int64(2 * f[5]) + f6_2 := int64(2 * f[6]) + f7_2 := int64(2 * f[7]) + f5_38 := 38 * f5 // 1.31*2^30 + f6_19 := 19 * f6 // 1.31*2^30 + f7_38 := 38 * f7 // 1.31*2^30 + f8_19 := 19 * f8 // 1.31*2^30 + f9_38 := 38 * f9 // 1.31*2^30 + + h0 = f0*f0 + f1_2*f9_38 + f2_2*f8_19 + f3_2*f7_38 + f4_2*f6_19 + f5*f5_38 + h1 = f0_2*f1 + f2*f9_38 + f3_2*f8_19 + f4*f7_38 + f5_2*f6_19 + h2 = f0_2*f2 + f1_2*f1 + f3_2*f9_38 + f4_2*f8_19 + f5_2*f7_38 + f6*f6_19 + h3 = f0_2*f3 + f1_2*f2 + f4*f9_38 + f5_2*f8_19 + f6*f7_38 + h4 = f0_2*f4 + f1_2*f3_2 + f2*f2 + f5_2*f9_38 + f6_2*f8_19 + f7*f7_38 + h5 = f0_2*f5 + f1_2*f4 + f2_2*f3 + f6*f9_38 + f7_2*f8_19 + h6 = f0_2*f6 + f1_2*f5_2 + f2_2*f4 + f3_2*f3 + f7_2*f9_38 + f8*f8_19 + h7 = f0_2*f7 + f1_2*f6 + f2_2*f5 + f3_2*f4 + f8*f9_38 + h8 = f0_2*f8 + f1_2*f7_2 + f2_2*f6 + f3_2*f5_2 + f4*f4 + f9*f9_38 + h9 = f0_2*f9 + f1_2*f8 + f2_2*f7 + f3_2*f6 + f4_2*f5 + + return +} + +// FeSquare calculates h = f*f. Can overlap h with f. +// +// Preconditions: +// |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc. +// +// Postconditions: +// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc. +func FeSquare(h, f *FieldElement) { + h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 := feSquare(f) + FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9) +} + +// FeSquare2 sets h = 2 * f * f +// +// Can overlap h with f. +// +// Preconditions: +// |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc. +// +// Postconditions: +// |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc. +// See fe_mul.c for discussion of implementation strategy. +func FeSquare2(h, f *FieldElement) { + h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 := feSquare(f) + + h0 += h0 + h1 += h1 + h2 += h2 + h3 += h3 + h4 += h4 + h5 += h5 + h6 += h6 + h7 += h7 + h8 += h8 + h9 += h9 + + FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9) +} + +func FeInvert(out, z *FieldElement) { + var t0, t1, t2, t3 FieldElement + var i int + + FeSquare(&t0, z) // 2^1 + FeSquare(&t1, &t0) // 2^2 + for i = 1; i < 2; i++ { // 2^3 + FeSquare(&t1, &t1) + } + FeMul(&t1, z, &t1) // 2^3 + 2^0 + FeMul(&t0, &t0, &t1) // 2^3 + 2^1 + 2^0 + FeSquare(&t2, &t0) // 2^4 + 2^2 + 2^1 + FeMul(&t1, &t1, &t2) // 2^4 + 2^3 + 2^2 + 2^1 + 2^0 + FeSquare(&t2, &t1) // 5,4,3,2,1 + for i = 1; i < 5; i++ { // 9,8,7,6,5 + FeSquare(&t2, &t2) + } + FeMul(&t1, &t2, &t1) // 9,8,7,6,5,4,3,2,1,0 + FeSquare(&t2, &t1) // 10..1 + for i = 1; i < 10; i++ { // 19..10 + FeSquare(&t2, &t2) + } + FeMul(&t2, &t2, &t1) // 19..0 + FeSquare(&t3, &t2) // 20..1 + for i = 1; i < 20; i++ { // 39..20 + FeSquare(&t3, &t3) + } + FeMul(&t2, &t3, &t2) // 39..0 + FeSquare(&t2, &t2) // 40..1 + for i = 1; i < 10; i++ { // 49..10 + FeSquare(&t2, &t2) + } + FeMul(&t1, &t2, &t1) // 49..0 + FeSquare(&t2, &t1) // 50..1 + for i = 1; i < 50; i++ { // 99..50 + FeSquare(&t2, &t2) + } + FeMul(&t2, &t2, &t1) // 99..0 + FeSquare(&t3, &t2) // 100..1 + for i = 1; i < 100; i++ { // 199..100 + FeSquare(&t3, &t3) + } + FeMul(&t2, &t3, &t2) // 199..0 + FeSquare(&t2, &t2) // 200..1 + for i = 1; i < 50; i++ { // 249..50 + FeSquare(&t2, &t2) + } + FeMul(&t1, &t2, &t1) // 249..0 + FeSquare(&t1, &t1) // 250..1 + for i = 1; i < 5; i++ { // 254..5 + FeSquare(&t1, &t1) + } + FeMul(out, &t1, &t0) // 254..5,3,1,0 +} + +func fePow22523(out, z *FieldElement) { + var t0, t1, t2 FieldElement + var i int + + FeSquare(&t0, z) + for i = 1; i < 1; i++ { + FeSquare(&t0, &t0) + } + FeSquare(&t1, &t0) + for i = 1; i < 2; i++ { + FeSquare(&t1, &t1) + } + FeMul(&t1, z, &t1) + FeMul(&t0, &t0, &t1) + FeSquare(&t0, &t0) + for i = 1; i < 1; i++ { + FeSquare(&t0, &t0) + } + FeMul(&t0, &t1, &t0) + FeSquare(&t1, &t0) + for i = 1; i < 5; i++ { + FeSquare(&t1, &t1) + } + FeMul(&t0, &t1, &t0) + FeSquare(&t1, &t0) + for i = 1; i < 10; i++ { + FeSquare(&t1, &t1) + } + FeMul(&t1, &t1, &t0) + FeSquare(&t2, &t1) + for i = 1; i < 20; i++ { + FeSquare(&t2, &t2) + } + FeMul(&t1, &t2, &t1) + FeSquare(&t1, &t1) + for i = 1; i < 10; i++ { + FeSquare(&t1, &t1) + } + FeMul(&t0, &t1, &t0) + FeSquare(&t1, &t0) + for i = 1; i < 50; i++ { + FeSquare(&t1, &t1) + } + FeMul(&t1, &t1, &t0) + FeSquare(&t2, &t1) + for i = 1; i < 100; i++ { + FeSquare(&t2, &t2) + } + FeMul(&t1, &t2, &t1) + FeSquare(&t1, &t1) + for i = 1; i < 50; i++ { + FeSquare(&t1, &t1) + } + FeMul(&t0, &t1, &t0) + FeSquare(&t0, &t0) + for i = 1; i < 2; i++ { + FeSquare(&t0, &t0) + } + FeMul(out, &t0, z) +} + +// Group elements are members of the elliptic curve -x^2 + y^2 = 1 + d * x^2 * +// y^2 where d = -121665/121666. +// +// Several representations are used: +// ProjectiveGroupElement: (X:Y:Z) satisfying x=X/Z, y=Y/Z +// ExtendedGroupElement: (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT +// CompletedGroupElement: ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T +// PreComputedGroupElement: (y+x,y-x,2dxy) + +type ProjectiveGroupElement struct { + X, Y, Z FieldElement +} + +type ExtendedGroupElement struct { + X, Y, Z, T FieldElement +} + +type CompletedGroupElement struct { + X, Y, Z, T FieldElement +} + +type PreComputedGroupElement struct { + yPlusX, yMinusX, xy2d FieldElement +} + +type CachedGroupElement struct { + yPlusX, yMinusX, Z, T2d FieldElement +} + +func (p *ProjectiveGroupElement) Zero() { + FeZero(&p.X) + FeOne(&p.Y) + FeOne(&p.Z) +} + +func (p *ProjectiveGroupElement) Double(r *CompletedGroupElement) { + var t0 FieldElement + + FeSquare(&r.X, &p.X) + FeSquare(&r.Z, &p.Y) + FeSquare2(&r.T, &p.Z) + FeAdd(&r.Y, &p.X, &p.Y) + FeSquare(&t0, &r.Y) + FeAdd(&r.Y, &r.Z, &r.X) + FeSub(&r.Z, &r.Z, &r.X) + FeSub(&r.X, &t0, &r.Y) + FeSub(&r.T, &r.T, &r.Z) +} + +func (p *ProjectiveGroupElement) ToBytes(s *[32]byte) { + var recip, x, y FieldElement + + FeInvert(&recip, &p.Z) + FeMul(&x, &p.X, &recip) + FeMul(&y, &p.Y, &recip) + FeToBytes(s, &y) + s[31] ^= FeIsNegative(&x) << 7 +} + +func (p *ExtendedGroupElement) Zero() { + FeZero(&p.X) + FeOne(&p.Y) + FeOne(&p.Z) + FeZero(&p.T) +} + +func (p *ExtendedGroupElement) Double(r *CompletedGroupElement) { + var q ProjectiveGroupElement + p.ToProjective(&q) + q.Double(r) +} + +func (p *ExtendedGroupElement) ToCached(r *CachedGroupElement) { + FeAdd(&r.yPlusX, &p.Y, &p.X) + FeSub(&r.yMinusX, &p.Y, &p.X) + FeCopy(&r.Z, &p.Z) + FeMul(&r.T2d, &p.T, &d2) +} + +func (p *ExtendedGroupElement) ToProjective(r *ProjectiveGroupElement) { + FeCopy(&r.X, &p.X) + FeCopy(&r.Y, &p.Y) + FeCopy(&r.Z, &p.Z) +} + +func (p *ExtendedGroupElement) ToBytes(s *[32]byte) { + var recip, x, y FieldElement + + FeInvert(&recip, &p.Z) + FeMul(&x, &p.X, &recip) + FeMul(&y, &p.Y, &recip) + FeToBytes(s, &y) + s[31] ^= FeIsNegative(&x) << 7 +} + +func (p *ExtendedGroupElement) FromBytes(s *[32]byte) bool { + var u, v, v3, vxx, check FieldElement + + FeFromBytes(&p.Y, s) + FeOne(&p.Z) + FeSquare(&u, &p.Y) + FeMul(&v, &u, &d) + FeSub(&u, &u, &p.Z) // y = y^2-1 + FeAdd(&v, &v, &p.Z) // v = dy^2+1 + + FeSquare(&v3, &v) + FeMul(&v3, &v3, &v) // v3 = v^3 + FeSquare(&p.X, &v3) + FeMul(&p.X, &p.X, &v) + FeMul(&p.X, &p.X, &u) // x = uv^7 + + fePow22523(&p.X, &p.X) // x = (uv^7)^((q-5)/8) + FeMul(&p.X, &p.X, &v3) + FeMul(&p.X, &p.X, &u) // x = uv^3(uv^7)^((q-5)/8) + + var tmpX, tmp2 [32]byte + + FeSquare(&vxx, &p.X) + FeMul(&vxx, &vxx, &v) + FeSub(&check, &vxx, &u) // vx^2-u + if FeIsNonZero(&check) == 1 { + FeAdd(&check, &vxx, &u) // vx^2+u + if FeIsNonZero(&check) == 1 { + return false + } + FeMul(&p.X, &p.X, &SqrtM1) + + FeToBytes(&tmpX, &p.X) + for i, v := range tmpX { + tmp2[31-i] = v + } + } + + if FeIsNegative(&p.X) != (s[31] >> 7) { + FeNeg(&p.X, &p.X) + } + + FeMul(&p.T, &p.X, &p.Y) + return true +} + +func (p *CompletedGroupElement) ToProjective(r *ProjectiveGroupElement) { + FeMul(&r.X, &p.X, &p.T) + FeMul(&r.Y, &p.Y, &p.Z) + FeMul(&r.Z, &p.Z, &p.T) +} + +func (p *CompletedGroupElement) ToExtended(r *ExtendedGroupElement) { + FeMul(&r.X, &p.X, &p.T) + FeMul(&r.Y, &p.Y, &p.Z) + FeMul(&r.Z, &p.Z, &p.T) + FeMul(&r.T, &p.X, &p.Y) +} + +func (p *PreComputedGroupElement) Zero() { + FeOne(&p.yPlusX) + FeOne(&p.yMinusX) + FeZero(&p.xy2d) +} + +func geAdd(r *CompletedGroupElement, p *ExtendedGroupElement, q *CachedGroupElement) { + var t0 FieldElement + + FeAdd(&r.X, &p.Y, &p.X) + FeSub(&r.Y, &p.Y, &p.X) + FeMul(&r.Z, &r.X, &q.yPlusX) + FeMul(&r.Y, &r.Y, &q.yMinusX) + FeMul(&r.T, &q.T2d, &p.T) + FeMul(&r.X, &p.Z, &q.Z) + FeAdd(&t0, &r.X, &r.X) + FeSub(&r.X, &r.Z, &r.Y) + FeAdd(&r.Y, &r.Z, &r.Y) + FeAdd(&r.Z, &t0, &r.T) + FeSub(&r.T, &t0, &r.T) +} + +func geSub(r *CompletedGroupElement, p *ExtendedGroupElement, q *CachedGroupElement) { + var t0 FieldElement + + FeAdd(&r.X, &p.Y, &p.X) + FeSub(&r.Y, &p.Y, &p.X) + FeMul(&r.Z, &r.X, &q.yMinusX) + FeMul(&r.Y, &r.Y, &q.yPlusX) + FeMul(&r.T, &q.T2d, &p.T) + FeMul(&r.X, &p.Z, &q.Z) + FeAdd(&t0, &r.X, &r.X) + FeSub(&r.X, &r.Z, &r.Y) + FeAdd(&r.Y, &r.Z, &r.Y) + FeSub(&r.Z, &t0, &r.T) + FeAdd(&r.T, &t0, &r.T) +} + +func geMixedAdd(r *CompletedGroupElement, p *ExtendedGroupElement, q *PreComputedGroupElement) { + var t0 FieldElement + + FeAdd(&r.X, &p.Y, &p.X) + FeSub(&r.Y, &p.Y, &p.X) + FeMul(&r.Z, &r.X, &q.yPlusX) + FeMul(&r.Y, &r.Y, &q.yMinusX) + FeMul(&r.T, &q.xy2d, &p.T) + FeAdd(&t0, &p.Z, &p.Z) + FeSub(&r.X, &r.Z, &r.Y) + FeAdd(&r.Y, &r.Z, &r.Y) + FeAdd(&r.Z, &t0, &r.T) + FeSub(&r.T, &t0, &r.T) +} + +func geMixedSub(r *CompletedGroupElement, p *ExtendedGroupElement, q *PreComputedGroupElement) { + var t0 FieldElement + + FeAdd(&r.X, &p.Y, &p.X) + FeSub(&r.Y, &p.Y, &p.X) + FeMul(&r.Z, &r.X, &q.yMinusX) + FeMul(&r.Y, &r.Y, &q.yPlusX) + FeMul(&r.T, &q.xy2d, &p.T) + FeAdd(&t0, &p.Z, &p.Z) + FeSub(&r.X, &r.Z, &r.Y) + FeAdd(&r.Y, &r.Z, &r.Y) + FeSub(&r.Z, &t0, &r.T) + FeAdd(&r.T, &t0, &r.T) +} + +func slide(r *[256]int8, a *[32]byte) { + for i := range r { + r[i] = int8(1 & (a[i>>3] >> uint(i&7))) + } + + for i := range r { + if r[i] != 0 { + for b := 1; b <= 6 && i+b < 256; b++ { + if r[i+b] != 0 { + if r[i]+(r[i+b]<= -15 { + r[i] -= r[i+b] << uint(b) + for k := i + b; k < 256; k++ { + if r[k] == 0 { + r[k] = 1 + break + } + r[k] = 0 + } + } else { + break + } + } + } + } + } +} + +// GeDoubleScalarMultVartime sets r = a*A + b*B +// where a = a[0]+256*a[1]+...+256^31 a[31]. +// and b = b[0]+256*b[1]+...+256^31 b[31]. +// B is the Ed25519 base point (x,4/5) with x positive. +func GeDoubleScalarMultVartime(r *ProjectiveGroupElement, a *[32]byte, A *ExtendedGroupElement, b *[32]byte) { + var aSlide, bSlide [256]int8 + var Ai [8]CachedGroupElement // A,3A,5A,7A,9A,11A,13A,15A + var t CompletedGroupElement + var u, A2 ExtendedGroupElement + var i int + + slide(&aSlide, a) + slide(&bSlide, b) + + A.ToCached(&Ai[0]) + A.Double(&t) + t.ToExtended(&A2) + + for i := 0; i < 7; i++ { + geAdd(&t, &A2, &Ai[i]) + t.ToExtended(&u) + u.ToCached(&Ai[i+1]) + } + + r.Zero() + + for i = 255; i >= 0; i-- { + if aSlide[i] != 0 || bSlide[i] != 0 { + break + } + } + + for ; i >= 0; i-- { + r.Double(&t) + + if aSlide[i] > 0 { + t.ToExtended(&u) + geAdd(&t, &u, &Ai[aSlide[i]/2]) + } else if aSlide[i] < 0 { + t.ToExtended(&u) + geSub(&t, &u, &Ai[(-aSlide[i])/2]) + } + + if bSlide[i] > 0 { + t.ToExtended(&u) + geMixedAdd(&t, &u, &bi[bSlide[i]/2]) + } else if bSlide[i] < 0 { + t.ToExtended(&u) + geMixedSub(&t, &u, &bi[(-bSlide[i])/2]) + } + + t.ToProjective(r) + } +} + +// equal returns 1 if b == c and 0 otherwise, assuming that b and c are +// non-negative. +func equal(b, c int32) int32 { + x := uint32(b ^ c) + x-- + return int32(x >> 31) +} + +// negative returns 1 if b < 0 and 0 otherwise. +func negative(b int32) int32 { + return (b >> 31) & 1 +} + +func PreComputedGroupElementCMove(t, u *PreComputedGroupElement, b int32) { + FeCMove(&t.yPlusX, &u.yPlusX, b) + FeCMove(&t.yMinusX, &u.yMinusX, b) + FeCMove(&t.xy2d, &u.xy2d, b) +} + +func selectPoint(t *PreComputedGroupElement, pos int32, b int32) { + var minusT PreComputedGroupElement + bNegative := negative(b) + bAbs := b - (((-bNegative) & b) << 1) + + t.Zero() + for i := int32(0); i < 8; i++ { + PreComputedGroupElementCMove(t, &base[pos][i], equal(bAbs, i+1)) + } + FeCopy(&minusT.yPlusX, &t.yMinusX) + FeCopy(&minusT.yMinusX, &t.yPlusX) + FeNeg(&minusT.xy2d, &t.xy2d) + PreComputedGroupElementCMove(t, &minusT, bNegative) +} + +// GeScalarMultBase computes h = a*B, where +// a = a[0]+256*a[1]+...+256^31 a[31] +// B is the Ed25519 base point (x,4/5) with x positive. +// +// Preconditions: +// a[31] <= 127 +func GeScalarMultBase(h *ExtendedGroupElement, a *[32]byte) { + var e [64]int8 + + for i, v := range a { + e[2*i] = int8(v & 15) + e[2*i+1] = int8((v >> 4) & 15) + } + + // each e[i] is between 0 and 15 and e[63] is between 0 and 7. + + carry := int8(0) + for i := 0; i < 63; i++ { + e[i] += carry + carry = (e[i] + 8) >> 4 + e[i] -= carry << 4 + } + e[63] += carry + // each e[i] is between -8 and 8. + + h.Zero() + var t PreComputedGroupElement + var r CompletedGroupElement + for i := int32(1); i < 64; i += 2 { + selectPoint(&t, i/2, int32(e[i])) + geMixedAdd(&r, h, &t) + r.ToExtended(h) + } + + var s ProjectiveGroupElement + + h.Double(&r) + r.ToProjective(&s) + s.Double(&r) + r.ToProjective(&s) + s.Double(&r) + r.ToProjective(&s) + s.Double(&r) + r.ToExtended(h) + + for i := int32(0); i < 64; i += 2 { + selectPoint(&t, i/2, int32(e[i])) + geMixedAdd(&r, h, &t) + r.ToExtended(h) + } +} + +// The scalars are GF(2^252 + 27742317777372353535851937790883648493). + +// Input: +// a[0]+256*a[1]+...+256^31*a[31] = a +// b[0]+256*b[1]+...+256^31*b[31] = b +// c[0]+256*c[1]+...+256^31*c[31] = c +// +// Output: +// s[0]+256*s[1]+...+256^31*s[31] = (ab+c) mod l +// where l = 2^252 + 27742317777372353535851937790883648493. +func ScMulAdd(s, a, b, c *[32]byte) { + a0 := 2097151 & load3(a[:]) + a1 := 2097151 & (load4(a[2:]) >> 5) + a2 := 2097151 & (load3(a[5:]) >> 2) + a3 := 2097151 & (load4(a[7:]) >> 7) + a4 := 2097151 & (load4(a[10:]) >> 4) + a5 := 2097151 & (load3(a[13:]) >> 1) + a6 := 2097151 & (load4(a[15:]) >> 6) + a7 := 2097151 & (load3(a[18:]) >> 3) + a8 := 2097151 & load3(a[21:]) + a9 := 2097151 & (load4(a[23:]) >> 5) + a10 := 2097151 & (load3(a[26:]) >> 2) + a11 := (load4(a[28:]) >> 7) + b0 := 2097151 & load3(b[:]) + b1 := 2097151 & (load4(b[2:]) >> 5) + b2 := 2097151 & (load3(b[5:]) >> 2) + b3 := 2097151 & (load4(b[7:]) >> 7) + b4 := 2097151 & (load4(b[10:]) >> 4) + b5 := 2097151 & (load3(b[13:]) >> 1) + b6 := 2097151 & (load4(b[15:]) >> 6) + b7 := 2097151 & (load3(b[18:]) >> 3) + b8 := 2097151 & load3(b[21:]) + b9 := 2097151 & (load4(b[23:]) >> 5) + b10 := 2097151 & (load3(b[26:]) >> 2) + b11 := (load4(b[28:]) >> 7) + c0 := 2097151 & load3(c[:]) + c1 := 2097151 & (load4(c[2:]) >> 5) + c2 := 2097151 & (load3(c[5:]) >> 2) + c3 := 2097151 & (load4(c[7:]) >> 7) + c4 := 2097151 & (load4(c[10:]) >> 4) + c5 := 2097151 & (load3(c[13:]) >> 1) + c6 := 2097151 & (load4(c[15:]) >> 6) + c7 := 2097151 & (load3(c[18:]) >> 3) + c8 := 2097151 & load3(c[21:]) + c9 := 2097151 & (load4(c[23:]) >> 5) + c10 := 2097151 & (load3(c[26:]) >> 2) + c11 := (load4(c[28:]) >> 7) + var carry [23]int64 + + s0 := c0 + a0*b0 + s1 := c1 + a0*b1 + a1*b0 + s2 := c2 + a0*b2 + a1*b1 + a2*b0 + s3 := c3 + a0*b3 + a1*b2 + a2*b1 + a3*b0 + s4 := c4 + a0*b4 + a1*b3 + a2*b2 + a3*b1 + a4*b0 + s5 := c5 + a0*b5 + a1*b4 + a2*b3 + a3*b2 + a4*b1 + a5*b0 + s6 := c6 + a0*b6 + a1*b5 + a2*b4 + a3*b3 + a4*b2 + a5*b1 + a6*b0 + s7 := c7 + a0*b7 + a1*b6 + a2*b5 + a3*b4 + a4*b3 + a5*b2 + a6*b1 + a7*b0 + s8 := c8 + a0*b8 + a1*b7 + a2*b6 + a3*b5 + a4*b4 + a5*b3 + a6*b2 + a7*b1 + a8*b0 + s9 := c9 + a0*b9 + a1*b8 + a2*b7 + a3*b6 + a4*b5 + a5*b4 + a6*b3 + a7*b2 + a8*b1 + a9*b0 + s10 := c10 + a0*b10 + a1*b9 + a2*b8 + a3*b7 + a4*b6 + a5*b5 + a6*b4 + a7*b3 + a8*b2 + a9*b1 + a10*b0 + s11 := c11 + a0*b11 + a1*b10 + a2*b9 + a3*b8 + a4*b7 + a5*b6 + a6*b5 + a7*b4 + a8*b3 + a9*b2 + a10*b1 + a11*b0 + s12 := a1*b11 + a2*b10 + a3*b9 + a4*b8 + a5*b7 + a6*b6 + a7*b5 + a8*b4 + a9*b3 + a10*b2 + a11*b1 + s13 := a2*b11 + a3*b10 + a4*b9 + a5*b8 + a6*b7 + a7*b6 + a8*b5 + a9*b4 + a10*b3 + a11*b2 + s14 := a3*b11 + a4*b10 + a5*b9 + a6*b8 + a7*b7 + a8*b6 + a9*b5 + a10*b4 + a11*b3 + s15 := a4*b11 + a5*b10 + a6*b9 + a7*b8 + a8*b7 + a9*b6 + a10*b5 + a11*b4 + s16 := a5*b11 + a6*b10 + a7*b9 + a8*b8 + a9*b7 + a10*b6 + a11*b5 + s17 := a6*b11 + a7*b10 + a8*b9 + a9*b8 + a10*b7 + a11*b6 + s18 := a7*b11 + a8*b10 + a9*b9 + a10*b8 + a11*b7 + s19 := a8*b11 + a9*b10 + a10*b9 + a11*b8 + s20 := a9*b11 + a10*b10 + a11*b9 + s21 := a10*b11 + a11*b10 + s22 := a11 * b11 + s23 := int64(0) + + carry[0] = (s0 + (1 << 20)) >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[2] = (s2 + (1 << 20)) >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[4] = (s4 + (1 << 20)) >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[6] = (s6 + (1 << 20)) >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[8] = (s8 + (1 << 20)) >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[10] = (s10 + (1 << 20)) >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + carry[12] = (s12 + (1 << 20)) >> 21 + s13 += carry[12] + s12 -= carry[12] << 21 + carry[14] = (s14 + (1 << 20)) >> 21 + s15 += carry[14] + s14 -= carry[14] << 21 + carry[16] = (s16 + (1 << 20)) >> 21 + s17 += carry[16] + s16 -= carry[16] << 21 + carry[18] = (s18 + (1 << 20)) >> 21 + s19 += carry[18] + s18 -= carry[18] << 21 + carry[20] = (s20 + (1 << 20)) >> 21 + s21 += carry[20] + s20 -= carry[20] << 21 + carry[22] = (s22 + (1 << 20)) >> 21 + s23 += carry[22] + s22 -= carry[22] << 21 + + carry[1] = (s1 + (1 << 20)) >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[3] = (s3 + (1 << 20)) >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[5] = (s5 + (1 << 20)) >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[7] = (s7 + (1 << 20)) >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[9] = (s9 + (1 << 20)) >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[11] = (s11 + (1 << 20)) >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + carry[13] = (s13 + (1 << 20)) >> 21 + s14 += carry[13] + s13 -= carry[13] << 21 + carry[15] = (s15 + (1 << 20)) >> 21 + s16 += carry[15] + s15 -= carry[15] << 21 + carry[17] = (s17 + (1 << 20)) >> 21 + s18 += carry[17] + s17 -= carry[17] << 21 + carry[19] = (s19 + (1 << 20)) >> 21 + s20 += carry[19] + s19 -= carry[19] << 21 + carry[21] = (s21 + (1 << 20)) >> 21 + s22 += carry[21] + s21 -= carry[21] << 21 + + s11 += s23 * 666643 + s12 += s23 * 470296 + s13 += s23 * 654183 + s14 -= s23 * 997805 + s15 += s23 * 136657 + s16 -= s23 * 683901 + s23 = 0 + + s10 += s22 * 666643 + s11 += s22 * 470296 + s12 += s22 * 654183 + s13 -= s22 * 997805 + s14 += s22 * 136657 + s15 -= s22 * 683901 + s22 = 0 + + s9 += s21 * 666643 + s10 += s21 * 470296 + s11 += s21 * 654183 + s12 -= s21 * 997805 + s13 += s21 * 136657 + s14 -= s21 * 683901 + s21 = 0 + + s8 += s20 * 666643 + s9 += s20 * 470296 + s10 += s20 * 654183 + s11 -= s20 * 997805 + s12 += s20 * 136657 + s13 -= s20 * 683901 + s20 = 0 + + s7 += s19 * 666643 + s8 += s19 * 470296 + s9 += s19 * 654183 + s10 -= s19 * 997805 + s11 += s19 * 136657 + s12 -= s19 * 683901 + s19 = 0 + + s6 += s18 * 666643 + s7 += s18 * 470296 + s8 += s18 * 654183 + s9 -= s18 * 997805 + s10 += s18 * 136657 + s11 -= s18 * 683901 + s18 = 0 + + carry[6] = (s6 + (1 << 20)) >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[8] = (s8 + (1 << 20)) >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[10] = (s10 + (1 << 20)) >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + carry[12] = (s12 + (1 << 20)) >> 21 + s13 += carry[12] + s12 -= carry[12] << 21 + carry[14] = (s14 + (1 << 20)) >> 21 + s15 += carry[14] + s14 -= carry[14] << 21 + carry[16] = (s16 + (1 << 20)) >> 21 + s17 += carry[16] + s16 -= carry[16] << 21 + + carry[7] = (s7 + (1 << 20)) >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[9] = (s9 + (1 << 20)) >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[11] = (s11 + (1 << 20)) >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + carry[13] = (s13 + (1 << 20)) >> 21 + s14 += carry[13] + s13 -= carry[13] << 21 + carry[15] = (s15 + (1 << 20)) >> 21 + s16 += carry[15] + s15 -= carry[15] << 21 + + s5 += s17 * 666643 + s6 += s17 * 470296 + s7 += s17 * 654183 + s8 -= s17 * 997805 + s9 += s17 * 136657 + s10 -= s17 * 683901 + s17 = 0 + + s4 += s16 * 666643 + s5 += s16 * 470296 + s6 += s16 * 654183 + s7 -= s16 * 997805 + s8 += s16 * 136657 + s9 -= s16 * 683901 + s16 = 0 + + s3 += s15 * 666643 + s4 += s15 * 470296 + s5 += s15 * 654183 + s6 -= s15 * 997805 + s7 += s15 * 136657 + s8 -= s15 * 683901 + s15 = 0 + + s2 += s14 * 666643 + s3 += s14 * 470296 + s4 += s14 * 654183 + s5 -= s14 * 997805 + s6 += s14 * 136657 + s7 -= s14 * 683901 + s14 = 0 + + s1 += s13 * 666643 + s2 += s13 * 470296 + s3 += s13 * 654183 + s4 -= s13 * 997805 + s5 += s13 * 136657 + s6 -= s13 * 683901 + s13 = 0 + + s0 += s12 * 666643 + s1 += s12 * 470296 + s2 += s12 * 654183 + s3 -= s12 * 997805 + s4 += s12 * 136657 + s5 -= s12 * 683901 + s12 = 0 + + carry[0] = (s0 + (1 << 20)) >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[2] = (s2 + (1 << 20)) >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[4] = (s4 + (1 << 20)) >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[6] = (s6 + (1 << 20)) >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[8] = (s8 + (1 << 20)) >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[10] = (s10 + (1 << 20)) >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + + carry[1] = (s1 + (1 << 20)) >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[3] = (s3 + (1 << 20)) >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[5] = (s5 + (1 << 20)) >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[7] = (s7 + (1 << 20)) >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[9] = (s9 + (1 << 20)) >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[11] = (s11 + (1 << 20)) >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + + s0 += s12 * 666643 + s1 += s12 * 470296 + s2 += s12 * 654183 + s3 -= s12 * 997805 + s4 += s12 * 136657 + s5 -= s12 * 683901 + s12 = 0 + + carry[0] = s0 >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[1] = s1 >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[2] = s2 >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[3] = s3 >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[4] = s4 >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[5] = s5 >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[6] = s6 >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[7] = s7 >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[8] = s8 >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[9] = s9 >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[10] = s10 >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + carry[11] = s11 >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + + s0 += s12 * 666643 + s1 += s12 * 470296 + s2 += s12 * 654183 + s3 -= s12 * 997805 + s4 += s12 * 136657 + s5 -= s12 * 683901 + s12 = 0 + + carry[0] = s0 >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[1] = s1 >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[2] = s2 >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[3] = s3 >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[4] = s4 >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[5] = s5 >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[6] = s6 >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[7] = s7 >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[8] = s8 >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[9] = s9 >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[10] = s10 >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + + s[0] = byte(s0 >> 0) + s[1] = byte(s0 >> 8) + s[2] = byte((s0 >> 16) | (s1 << 5)) + s[3] = byte(s1 >> 3) + s[4] = byte(s1 >> 11) + s[5] = byte((s1 >> 19) | (s2 << 2)) + s[6] = byte(s2 >> 6) + s[7] = byte((s2 >> 14) | (s3 << 7)) + s[8] = byte(s3 >> 1) + s[9] = byte(s3 >> 9) + s[10] = byte((s3 >> 17) | (s4 << 4)) + s[11] = byte(s4 >> 4) + s[12] = byte(s4 >> 12) + s[13] = byte((s4 >> 20) | (s5 << 1)) + s[14] = byte(s5 >> 7) + s[15] = byte((s5 >> 15) | (s6 << 6)) + s[16] = byte(s6 >> 2) + s[17] = byte(s6 >> 10) + s[18] = byte((s6 >> 18) | (s7 << 3)) + s[19] = byte(s7 >> 5) + s[20] = byte(s7 >> 13) + s[21] = byte(s8 >> 0) + s[22] = byte(s8 >> 8) + s[23] = byte((s8 >> 16) | (s9 << 5)) + s[24] = byte(s9 >> 3) + s[25] = byte(s9 >> 11) + s[26] = byte((s9 >> 19) | (s10 << 2)) + s[27] = byte(s10 >> 6) + s[28] = byte((s10 >> 14) | (s11 << 7)) + s[29] = byte(s11 >> 1) + s[30] = byte(s11 >> 9) + s[31] = byte(s11 >> 17) +} + +// Input: +// s[0]+256*s[1]+...+256^63*s[63] = s +// +// Output: +// s[0]+256*s[1]+...+256^31*s[31] = s mod l +// where l = 2^252 + 27742317777372353535851937790883648493. +func ScReduce(out *[32]byte, s *[64]byte) { + s0 := 2097151 & load3(s[:]) + s1 := 2097151 & (load4(s[2:]) >> 5) + s2 := 2097151 & (load3(s[5:]) >> 2) + s3 := 2097151 & (load4(s[7:]) >> 7) + s4 := 2097151 & (load4(s[10:]) >> 4) + s5 := 2097151 & (load3(s[13:]) >> 1) + s6 := 2097151 & (load4(s[15:]) >> 6) + s7 := 2097151 & (load3(s[18:]) >> 3) + s8 := 2097151 & load3(s[21:]) + s9 := 2097151 & (load4(s[23:]) >> 5) + s10 := 2097151 & (load3(s[26:]) >> 2) + s11 := 2097151 & (load4(s[28:]) >> 7) + s12 := 2097151 & (load4(s[31:]) >> 4) + s13 := 2097151 & (load3(s[34:]) >> 1) + s14 := 2097151 & (load4(s[36:]) >> 6) + s15 := 2097151 & (load3(s[39:]) >> 3) + s16 := 2097151 & load3(s[42:]) + s17 := 2097151 & (load4(s[44:]) >> 5) + s18 := 2097151 & (load3(s[47:]) >> 2) + s19 := 2097151 & (load4(s[49:]) >> 7) + s20 := 2097151 & (load4(s[52:]) >> 4) + s21 := 2097151 & (load3(s[55:]) >> 1) + s22 := 2097151 & (load4(s[57:]) >> 6) + s23 := (load4(s[60:]) >> 3) + + s11 += s23 * 666643 + s12 += s23 * 470296 + s13 += s23 * 654183 + s14 -= s23 * 997805 + s15 += s23 * 136657 + s16 -= s23 * 683901 + s23 = 0 + + s10 += s22 * 666643 + s11 += s22 * 470296 + s12 += s22 * 654183 + s13 -= s22 * 997805 + s14 += s22 * 136657 + s15 -= s22 * 683901 + s22 = 0 + + s9 += s21 * 666643 + s10 += s21 * 470296 + s11 += s21 * 654183 + s12 -= s21 * 997805 + s13 += s21 * 136657 + s14 -= s21 * 683901 + s21 = 0 + + s8 += s20 * 666643 + s9 += s20 * 470296 + s10 += s20 * 654183 + s11 -= s20 * 997805 + s12 += s20 * 136657 + s13 -= s20 * 683901 + s20 = 0 + + s7 += s19 * 666643 + s8 += s19 * 470296 + s9 += s19 * 654183 + s10 -= s19 * 997805 + s11 += s19 * 136657 + s12 -= s19 * 683901 + s19 = 0 + + s6 += s18 * 666643 + s7 += s18 * 470296 + s8 += s18 * 654183 + s9 -= s18 * 997805 + s10 += s18 * 136657 + s11 -= s18 * 683901 + s18 = 0 + + var carry [17]int64 + + carry[6] = (s6 + (1 << 20)) >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[8] = (s8 + (1 << 20)) >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[10] = (s10 + (1 << 20)) >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + carry[12] = (s12 + (1 << 20)) >> 21 + s13 += carry[12] + s12 -= carry[12] << 21 + carry[14] = (s14 + (1 << 20)) >> 21 + s15 += carry[14] + s14 -= carry[14] << 21 + carry[16] = (s16 + (1 << 20)) >> 21 + s17 += carry[16] + s16 -= carry[16] << 21 + + carry[7] = (s7 + (1 << 20)) >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[9] = (s9 + (1 << 20)) >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[11] = (s11 + (1 << 20)) >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + carry[13] = (s13 + (1 << 20)) >> 21 + s14 += carry[13] + s13 -= carry[13] << 21 + carry[15] = (s15 + (1 << 20)) >> 21 + s16 += carry[15] + s15 -= carry[15] << 21 + + s5 += s17 * 666643 + s6 += s17 * 470296 + s7 += s17 * 654183 + s8 -= s17 * 997805 + s9 += s17 * 136657 + s10 -= s17 * 683901 + s17 = 0 + + s4 += s16 * 666643 + s5 += s16 * 470296 + s6 += s16 * 654183 + s7 -= s16 * 997805 + s8 += s16 * 136657 + s9 -= s16 * 683901 + s16 = 0 + + s3 += s15 * 666643 + s4 += s15 * 470296 + s5 += s15 * 654183 + s6 -= s15 * 997805 + s7 += s15 * 136657 + s8 -= s15 * 683901 + s15 = 0 + + s2 += s14 * 666643 + s3 += s14 * 470296 + s4 += s14 * 654183 + s5 -= s14 * 997805 + s6 += s14 * 136657 + s7 -= s14 * 683901 + s14 = 0 + + s1 += s13 * 666643 + s2 += s13 * 470296 + s3 += s13 * 654183 + s4 -= s13 * 997805 + s5 += s13 * 136657 + s6 -= s13 * 683901 + s13 = 0 + + s0 += s12 * 666643 + s1 += s12 * 470296 + s2 += s12 * 654183 + s3 -= s12 * 997805 + s4 += s12 * 136657 + s5 -= s12 * 683901 + s12 = 0 + + carry[0] = (s0 + (1 << 20)) >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[2] = (s2 + (1 << 20)) >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[4] = (s4 + (1 << 20)) >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[6] = (s6 + (1 << 20)) >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[8] = (s8 + (1 << 20)) >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[10] = (s10 + (1 << 20)) >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + + carry[1] = (s1 + (1 << 20)) >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[3] = (s3 + (1 << 20)) >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[5] = (s5 + (1 << 20)) >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[7] = (s7 + (1 << 20)) >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[9] = (s9 + (1 << 20)) >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[11] = (s11 + (1 << 20)) >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + + s0 += s12 * 666643 + s1 += s12 * 470296 + s2 += s12 * 654183 + s3 -= s12 * 997805 + s4 += s12 * 136657 + s5 -= s12 * 683901 + s12 = 0 + + carry[0] = s0 >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[1] = s1 >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[2] = s2 >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[3] = s3 >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[4] = s4 >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[5] = s5 >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[6] = s6 >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[7] = s7 >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[8] = s8 >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[9] = s9 >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[10] = s10 >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + carry[11] = s11 >> 21 + s12 += carry[11] + s11 -= carry[11] << 21 + + s0 += s12 * 666643 + s1 += s12 * 470296 + s2 += s12 * 654183 + s3 -= s12 * 997805 + s4 += s12 * 136657 + s5 -= s12 * 683901 + s12 = 0 + + carry[0] = s0 >> 21 + s1 += carry[0] + s0 -= carry[0] << 21 + carry[1] = s1 >> 21 + s2 += carry[1] + s1 -= carry[1] << 21 + carry[2] = s2 >> 21 + s3 += carry[2] + s2 -= carry[2] << 21 + carry[3] = s3 >> 21 + s4 += carry[3] + s3 -= carry[3] << 21 + carry[4] = s4 >> 21 + s5 += carry[4] + s4 -= carry[4] << 21 + carry[5] = s5 >> 21 + s6 += carry[5] + s5 -= carry[5] << 21 + carry[6] = s6 >> 21 + s7 += carry[6] + s6 -= carry[6] << 21 + carry[7] = s7 >> 21 + s8 += carry[7] + s7 -= carry[7] << 21 + carry[8] = s8 >> 21 + s9 += carry[8] + s8 -= carry[8] << 21 + carry[9] = s9 >> 21 + s10 += carry[9] + s9 -= carry[9] << 21 + carry[10] = s10 >> 21 + s11 += carry[10] + s10 -= carry[10] << 21 + + out[0] = byte(s0 >> 0) + out[1] = byte(s0 >> 8) + out[2] = byte((s0 >> 16) | (s1 << 5)) + out[3] = byte(s1 >> 3) + out[4] = byte(s1 >> 11) + out[5] = byte((s1 >> 19) | (s2 << 2)) + out[6] = byte(s2 >> 6) + out[7] = byte((s2 >> 14) | (s3 << 7)) + out[8] = byte(s3 >> 1) + out[9] = byte(s3 >> 9) + out[10] = byte((s3 >> 17) | (s4 << 4)) + out[11] = byte(s4 >> 4) + out[12] = byte(s4 >> 12) + out[13] = byte((s4 >> 20) | (s5 << 1)) + out[14] = byte(s5 >> 7) + out[15] = byte((s5 >> 15) | (s6 << 6)) + out[16] = byte(s6 >> 2) + out[17] = byte(s6 >> 10) + out[18] = byte((s6 >> 18) | (s7 << 3)) + out[19] = byte(s7 >> 5) + out[20] = byte(s7 >> 13) + out[21] = byte(s8 >> 0) + out[22] = byte(s8 >> 8) + out[23] = byte((s8 >> 16) | (s9 << 5)) + out[24] = byte(s9 >> 3) + out[25] = byte(s9 >> 11) + out[26] = byte((s9 >> 19) | (s10 << 2)) + out[27] = byte(s10 >> 6) + out[28] = byte((s10 >> 14) | (s11 << 7)) + out[29] = byte(s11 >> 1) + out[30] = byte(s11 >> 9) + out[31] = byte(s11 >> 17) +} + +// order is the order of Curve25519 in little-endian form. +var order = [4]uint64{0x5812631a5cf5d3ed, 0x14def9dea2f79cd6, 0, 0x1000000000000000} + +// ScMinimal returns true if the given scalar is less than the order of the +// curve. +func ScMinimal(scalar *[32]byte) bool { + for i := 3; ; i-- { + v := binary.LittleEndian.Uint64(scalar[i*8:]) + if v > order[i] { + return false + } else if v < order[i] { + break + } else if i == 0 { + return false + } + } + + return true +} diff --git a/vendor/golang.org/x/crypto/sha3/doc.go b/vendor/golang.org/x/crypto/sha3/doc.go new file mode 100644 index 0000000..c2fef30 --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/doc.go @@ -0,0 +1,66 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package sha3 implements the SHA-3 fixed-output-length hash functions and +// the SHAKE variable-output-length hash functions defined by FIPS-202. +// +// Both types of hash function use the "sponge" construction and the Keccak +// permutation. For a detailed specification see http://keccak.noekeon.org/ +// +// +// Guidance +// +// If you aren't sure what function you need, use SHAKE256 with at least 64 +// bytes of output. The SHAKE instances are faster than the SHA3 instances; +// the latter have to allocate memory to conform to the hash.Hash interface. +// +// If you need a secret-key MAC (message authentication code), prepend the +// secret key to the input, hash with SHAKE256 and read at least 32 bytes of +// output. +// +// +// Security strengths +// +// The SHA3-x (x equals 224, 256, 384, or 512) functions have a security +// strength against preimage attacks of x bits. Since they only produce "x" +// bits of output, their collision-resistance is only "x/2" bits. +// +// The SHAKE-256 and -128 functions have a generic security strength of 256 and +// 128 bits against all attacks, provided that at least 2x bits of their output +// is used. Requesting more than 64 or 32 bytes of output, respectively, does +// not increase the collision-resistance of the SHAKE functions. +// +// +// The sponge construction +// +// A sponge builds a pseudo-random function from a public pseudo-random +// permutation, by applying the permutation to a state of "rate + capacity" +// bytes, but hiding "capacity" of the bytes. +// +// A sponge starts out with a zero state. To hash an input using a sponge, up +// to "rate" bytes of the input are XORed into the sponge's state. The sponge +// is then "full" and the permutation is applied to "empty" it. This process is +// repeated until all the input has been "absorbed". The input is then padded. +// The digest is "squeezed" from the sponge in the same way, except that output +// is copied out instead of input being XORed in. +// +// A sponge is parameterized by its generic security strength, which is equal +// to half its capacity; capacity + rate is equal to the permutation's width. +// Since the KeccakF-1600 permutation is 1600 bits (200 bytes) wide, this means +// that the security strength of a sponge instance is equal to (1600 - bitrate) / 2. +// +// +// Recommendations +// +// The SHAKE functions are recommended for most new uses. They can produce +// output of arbitrary length. SHAKE256, with an output length of at least +// 64 bytes, provides 256-bit security against all attacks. The Keccak team +// recommends it for most applications upgrading from SHA2-512. (NIST chose a +// much stronger, but much slower, sponge instance for SHA3-512.) +// +// The SHA-3 functions are "drop-in" replacements for the SHA-2 functions. +// They produce output of the same length, with the same security strengths +// against all attacks. This means, in particular, that SHA3-256 only has +// 128-bit collision resistance, because its output length is 32 bytes. +package sha3 // import "golang.org/x/crypto/sha3" diff --git a/vendor/golang.org/x/crypto/sha3/hashes.go b/vendor/golang.org/x/crypto/sha3/hashes.go new file mode 100644 index 0000000..0d8043f --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/hashes.go @@ -0,0 +1,97 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package sha3 + +// This file provides functions for creating instances of the SHA-3 +// and SHAKE hash functions, as well as utility functions for hashing +// bytes. + +import ( + "hash" +) + +// New224 creates a new SHA3-224 hash. +// Its generic security strength is 224 bits against preimage attacks, +// and 112 bits against collision attacks. +func New224() hash.Hash { + if h := new224Asm(); h != nil { + return h + } + return &state{rate: 144, outputLen: 28, dsbyte: 0x06} +} + +// New256 creates a new SHA3-256 hash. +// Its generic security strength is 256 bits against preimage attacks, +// and 128 bits against collision attacks. +func New256() hash.Hash { + if h := new256Asm(); h != nil { + return h + } + return &state{rate: 136, outputLen: 32, dsbyte: 0x06} +} + +// New384 creates a new SHA3-384 hash. +// Its generic security strength is 384 bits against preimage attacks, +// and 192 bits against collision attacks. +func New384() hash.Hash { + if h := new384Asm(); h != nil { + return h + } + return &state{rate: 104, outputLen: 48, dsbyte: 0x06} +} + +// New512 creates a new SHA3-512 hash. +// Its generic security strength is 512 bits against preimage attacks, +// and 256 bits against collision attacks. +func New512() hash.Hash { + if h := new512Asm(); h != nil { + return h + } + return &state{rate: 72, outputLen: 64, dsbyte: 0x06} +} + +// NewLegacyKeccak256 creates a new Keccak-256 hash. +// +// Only use this function if you require compatibility with an existing cryptosystem +// that uses non-standard padding. All other users should use New256 instead. +func NewLegacyKeccak256() hash.Hash { return &state{rate: 136, outputLen: 32, dsbyte: 0x01} } + +// NewLegacyKeccak512 creates a new Keccak-512 hash. +// +// Only use this function if you require compatibility with an existing cryptosystem +// that uses non-standard padding. All other users should use New512 instead. +func NewLegacyKeccak512() hash.Hash { return &state{rate: 72, outputLen: 64, dsbyte: 0x01} } + +// Sum224 returns the SHA3-224 digest of the data. +func Sum224(data []byte) (digest [28]byte) { + h := New224() + h.Write(data) + h.Sum(digest[:0]) + return +} + +// Sum256 returns the SHA3-256 digest of the data. +func Sum256(data []byte) (digest [32]byte) { + h := New256() + h.Write(data) + h.Sum(digest[:0]) + return +} + +// Sum384 returns the SHA3-384 digest of the data. +func Sum384(data []byte) (digest [48]byte) { + h := New384() + h.Write(data) + h.Sum(digest[:0]) + return +} + +// Sum512 returns the SHA3-512 digest of the data. +func Sum512(data []byte) (digest [64]byte) { + h := New512() + h.Write(data) + h.Sum(digest[:0]) + return +} diff --git a/vendor/golang.org/x/crypto/sha3/hashes_generic.go b/vendor/golang.org/x/crypto/sha3/hashes_generic.go new file mode 100644 index 0000000..c4ff3f6 --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/hashes_generic.go @@ -0,0 +1,27 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//+build gccgo appengine !s390x + +package sha3 + +import ( + "hash" +) + +// new224Asm returns an assembly implementation of SHA3-224 if available, +// otherwise it returns nil. +func new224Asm() hash.Hash { return nil } + +// new256Asm returns an assembly implementation of SHA3-256 if available, +// otherwise it returns nil. +func new256Asm() hash.Hash { return nil } + +// new384Asm returns an assembly implementation of SHA3-384 if available, +// otherwise it returns nil. +func new384Asm() hash.Hash { return nil } + +// new512Asm returns an assembly implementation of SHA3-512 if available, +// otherwise it returns nil. +func new512Asm() hash.Hash { return nil } diff --git a/vendor/golang.org/x/crypto/sha3/keccakf.go b/vendor/golang.org/x/crypto/sha3/keccakf.go new file mode 100644 index 0000000..46d03ed --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/keccakf.go @@ -0,0 +1,412 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build !amd64 appengine gccgo + +package sha3 + +// rc stores the round constants for use in the ι step. +var rc = [24]uint64{ + 0x0000000000000001, + 0x0000000000008082, + 0x800000000000808A, + 0x8000000080008000, + 0x000000000000808B, + 0x0000000080000001, + 0x8000000080008081, + 0x8000000000008009, + 0x000000000000008A, + 0x0000000000000088, + 0x0000000080008009, + 0x000000008000000A, + 0x000000008000808B, + 0x800000000000008B, + 0x8000000000008089, + 0x8000000000008003, + 0x8000000000008002, + 0x8000000000000080, + 0x000000000000800A, + 0x800000008000000A, + 0x8000000080008081, + 0x8000000000008080, + 0x0000000080000001, + 0x8000000080008008, +} + +// keccakF1600 applies the Keccak permutation to a 1600b-wide +// state represented as a slice of 25 uint64s. +func keccakF1600(a *[25]uint64) { + // Implementation translated from Keccak-inplace.c + // in the keccak reference code. + var t, bc0, bc1, bc2, bc3, bc4, d0, d1, d2, d3, d4 uint64 + + for i := 0; i < 24; i += 4 { + // Combines the 5 steps in each round into 2 steps. + // Unrolls 4 rounds per loop and spreads some steps across rounds. + + // Round 1 + bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20] + bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21] + bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22] + bc3 = a[3] ^ a[8] ^ a[13] ^ a[18] ^ a[23] + bc4 = a[4] ^ a[9] ^ a[14] ^ a[19] ^ a[24] + d0 = bc4 ^ (bc1<<1 | bc1>>63) + d1 = bc0 ^ (bc2<<1 | bc2>>63) + d2 = bc1 ^ (bc3<<1 | bc3>>63) + d3 = bc2 ^ (bc4<<1 | bc4>>63) + d4 = bc3 ^ (bc0<<1 | bc0>>63) + + bc0 = a[0] ^ d0 + t = a[6] ^ d1 + bc1 = t<<44 | t>>(64-44) + t = a[12] ^ d2 + bc2 = t<<43 | t>>(64-43) + t = a[18] ^ d3 + bc3 = t<<21 | t>>(64-21) + t = a[24] ^ d4 + bc4 = t<<14 | t>>(64-14) + a[0] = bc0 ^ (bc2 &^ bc1) ^ rc[i] + a[6] = bc1 ^ (bc3 &^ bc2) + a[12] = bc2 ^ (bc4 &^ bc3) + a[18] = bc3 ^ (bc0 &^ bc4) + a[24] = bc4 ^ (bc1 &^ bc0) + + t = a[10] ^ d0 + bc2 = t<<3 | t>>(64-3) + t = a[16] ^ d1 + bc3 = t<<45 | t>>(64-45) + t = a[22] ^ d2 + bc4 = t<<61 | t>>(64-61) + t = a[3] ^ d3 + bc0 = t<<28 | t>>(64-28) + t = a[9] ^ d4 + bc1 = t<<20 | t>>(64-20) + a[10] = bc0 ^ (bc2 &^ bc1) + a[16] = bc1 ^ (bc3 &^ bc2) + a[22] = bc2 ^ (bc4 &^ bc3) + a[3] = bc3 ^ (bc0 &^ bc4) + a[9] = bc4 ^ (bc1 &^ bc0) + + t = a[20] ^ d0 + bc4 = t<<18 | t>>(64-18) + t = a[1] ^ d1 + bc0 = t<<1 | t>>(64-1) + t = a[7] ^ d2 + bc1 = t<<6 | t>>(64-6) + t = a[13] ^ d3 + bc2 = t<<25 | t>>(64-25) + t = a[19] ^ d4 + bc3 = t<<8 | t>>(64-8) + a[20] = bc0 ^ (bc2 &^ bc1) + a[1] = bc1 ^ (bc3 &^ bc2) + a[7] = bc2 ^ (bc4 &^ bc3) + a[13] = bc3 ^ (bc0 &^ bc4) + a[19] = bc4 ^ (bc1 &^ bc0) + + t = a[5] ^ d0 + bc1 = t<<36 | t>>(64-36) + t = a[11] ^ d1 + bc2 = t<<10 | t>>(64-10) + t = a[17] ^ d2 + bc3 = t<<15 | t>>(64-15) + t = a[23] ^ d3 + bc4 = t<<56 | t>>(64-56) + t = a[4] ^ d4 + bc0 = t<<27 | t>>(64-27) + a[5] = bc0 ^ (bc2 &^ bc1) + a[11] = bc1 ^ (bc3 &^ bc2) + a[17] = bc2 ^ (bc4 &^ bc3) + a[23] = bc3 ^ (bc0 &^ bc4) + a[4] = bc4 ^ (bc1 &^ bc0) + + t = a[15] ^ d0 + bc3 = t<<41 | t>>(64-41) + t = a[21] ^ d1 + bc4 = t<<2 | t>>(64-2) + t = a[2] ^ d2 + bc0 = t<<62 | t>>(64-62) + t = a[8] ^ d3 + bc1 = t<<55 | t>>(64-55) + t = a[14] ^ d4 + bc2 = t<<39 | t>>(64-39) + a[15] = bc0 ^ (bc2 &^ bc1) + a[21] = bc1 ^ (bc3 &^ bc2) + a[2] = bc2 ^ (bc4 &^ bc3) + a[8] = bc3 ^ (bc0 &^ bc4) + a[14] = bc4 ^ (bc1 &^ bc0) + + // Round 2 + bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20] + bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21] + bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22] + bc3 = a[3] ^ a[8] ^ a[13] ^ a[18] ^ a[23] + bc4 = a[4] ^ a[9] ^ a[14] ^ a[19] ^ a[24] + d0 = bc4 ^ (bc1<<1 | bc1>>63) + d1 = bc0 ^ (bc2<<1 | bc2>>63) + d2 = bc1 ^ (bc3<<1 | bc3>>63) + d3 = bc2 ^ (bc4<<1 | bc4>>63) + d4 = bc3 ^ (bc0<<1 | bc0>>63) + + bc0 = a[0] ^ d0 + t = a[16] ^ d1 + bc1 = t<<44 | t>>(64-44) + t = a[7] ^ d2 + bc2 = t<<43 | t>>(64-43) + t = a[23] ^ d3 + bc3 = t<<21 | t>>(64-21) + t = a[14] ^ d4 + bc4 = t<<14 | t>>(64-14) + a[0] = bc0 ^ (bc2 &^ bc1) ^ rc[i+1] + a[16] = bc1 ^ (bc3 &^ bc2) + a[7] = bc2 ^ (bc4 &^ bc3) + a[23] = bc3 ^ (bc0 &^ bc4) + a[14] = bc4 ^ (bc1 &^ bc0) + + t = a[20] ^ d0 + bc2 = t<<3 | t>>(64-3) + t = a[11] ^ d1 + bc3 = t<<45 | t>>(64-45) + t = a[2] ^ d2 + bc4 = t<<61 | t>>(64-61) + t = a[18] ^ d3 + bc0 = t<<28 | t>>(64-28) + t = a[9] ^ d4 + bc1 = t<<20 | t>>(64-20) + a[20] = bc0 ^ (bc2 &^ bc1) + a[11] = bc1 ^ (bc3 &^ bc2) + a[2] = bc2 ^ (bc4 &^ bc3) + a[18] = bc3 ^ (bc0 &^ bc4) + a[9] = bc4 ^ (bc1 &^ bc0) + + t = a[15] ^ d0 + bc4 = t<<18 | t>>(64-18) + t = a[6] ^ d1 + bc0 = t<<1 | t>>(64-1) + t = a[22] ^ d2 + bc1 = t<<6 | t>>(64-6) + t = a[13] ^ d3 + bc2 = t<<25 | t>>(64-25) + t = a[4] ^ d4 + bc3 = t<<8 | t>>(64-8) + a[15] = bc0 ^ (bc2 &^ bc1) + a[6] = bc1 ^ (bc3 &^ bc2) + a[22] = bc2 ^ (bc4 &^ bc3) + a[13] = bc3 ^ (bc0 &^ bc4) + a[4] = bc4 ^ (bc1 &^ bc0) + + t = a[10] ^ d0 + bc1 = t<<36 | t>>(64-36) + t = a[1] ^ d1 + bc2 = t<<10 | t>>(64-10) + t = a[17] ^ d2 + bc3 = t<<15 | t>>(64-15) + t = a[8] ^ d3 + bc4 = t<<56 | t>>(64-56) + t = a[24] ^ d4 + bc0 = t<<27 | t>>(64-27) + a[10] = bc0 ^ (bc2 &^ bc1) + a[1] = bc1 ^ (bc3 &^ bc2) + a[17] = bc2 ^ (bc4 &^ bc3) + a[8] = bc3 ^ (bc0 &^ bc4) + a[24] = bc4 ^ (bc1 &^ bc0) + + t = a[5] ^ d0 + bc3 = t<<41 | t>>(64-41) + t = a[21] ^ d1 + bc4 = t<<2 | t>>(64-2) + t = a[12] ^ d2 + bc0 = t<<62 | t>>(64-62) + t = a[3] ^ d3 + bc1 = t<<55 | t>>(64-55) + t = a[19] ^ d4 + bc2 = t<<39 | t>>(64-39) + a[5] = bc0 ^ (bc2 &^ bc1) + a[21] = bc1 ^ (bc3 &^ bc2) + a[12] = bc2 ^ (bc4 &^ bc3) + a[3] = bc3 ^ (bc0 &^ bc4) + a[19] = bc4 ^ (bc1 &^ bc0) + + // Round 3 + bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20] + bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21] + bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22] + bc3 = a[3] ^ a[8] ^ a[13] ^ a[18] ^ a[23] + bc4 = a[4] ^ a[9] ^ a[14] ^ a[19] ^ a[24] + d0 = bc4 ^ (bc1<<1 | bc1>>63) + d1 = bc0 ^ (bc2<<1 | bc2>>63) + d2 = bc1 ^ (bc3<<1 | bc3>>63) + d3 = bc2 ^ (bc4<<1 | bc4>>63) + d4 = bc3 ^ (bc0<<1 | bc0>>63) + + bc0 = a[0] ^ d0 + t = a[11] ^ d1 + bc1 = t<<44 | t>>(64-44) + t = a[22] ^ d2 + bc2 = t<<43 | t>>(64-43) + t = a[8] ^ d3 + bc3 = t<<21 | t>>(64-21) + t = a[19] ^ d4 + bc4 = t<<14 | t>>(64-14) + a[0] = bc0 ^ (bc2 &^ bc1) ^ rc[i+2] + a[11] = bc1 ^ (bc3 &^ bc2) + a[22] = bc2 ^ (bc4 &^ bc3) + a[8] = bc3 ^ (bc0 &^ bc4) + a[19] = bc4 ^ (bc1 &^ bc0) + + t = a[15] ^ d0 + bc2 = t<<3 | t>>(64-3) + t = a[1] ^ d1 + bc3 = t<<45 | t>>(64-45) + t = a[12] ^ d2 + bc4 = t<<61 | t>>(64-61) + t = a[23] ^ d3 + bc0 = t<<28 | t>>(64-28) + t = a[9] ^ d4 + bc1 = t<<20 | t>>(64-20) + a[15] = bc0 ^ (bc2 &^ bc1) + a[1] = bc1 ^ (bc3 &^ bc2) + a[12] = bc2 ^ (bc4 &^ bc3) + a[23] = bc3 ^ (bc0 &^ bc4) + a[9] = bc4 ^ (bc1 &^ bc0) + + t = a[5] ^ d0 + bc4 = t<<18 | t>>(64-18) + t = a[16] ^ d1 + bc0 = t<<1 | t>>(64-1) + t = a[2] ^ d2 + bc1 = t<<6 | t>>(64-6) + t = a[13] ^ d3 + bc2 = t<<25 | t>>(64-25) + t = a[24] ^ d4 + bc3 = t<<8 | t>>(64-8) + a[5] = bc0 ^ (bc2 &^ bc1) + a[16] = bc1 ^ (bc3 &^ bc2) + a[2] = bc2 ^ (bc4 &^ bc3) + a[13] = bc3 ^ (bc0 &^ bc4) + a[24] = bc4 ^ (bc1 &^ bc0) + + t = a[20] ^ d0 + bc1 = t<<36 | t>>(64-36) + t = a[6] ^ d1 + bc2 = t<<10 | t>>(64-10) + t = a[17] ^ d2 + bc3 = t<<15 | t>>(64-15) + t = a[3] ^ d3 + bc4 = t<<56 | t>>(64-56) + t = a[14] ^ d4 + bc0 = t<<27 | t>>(64-27) + a[20] = bc0 ^ (bc2 &^ bc1) + a[6] = bc1 ^ (bc3 &^ bc2) + a[17] = bc2 ^ (bc4 &^ bc3) + a[3] = bc3 ^ (bc0 &^ bc4) + a[14] = bc4 ^ (bc1 &^ bc0) + + t = a[10] ^ d0 + bc3 = t<<41 | t>>(64-41) + t = a[21] ^ d1 + bc4 = t<<2 | t>>(64-2) + t = a[7] ^ d2 + bc0 = t<<62 | t>>(64-62) + t = a[18] ^ d3 + bc1 = t<<55 | t>>(64-55) + t = a[4] ^ d4 + bc2 = t<<39 | t>>(64-39) + a[10] = bc0 ^ (bc2 &^ bc1) + a[21] = bc1 ^ (bc3 &^ bc2) + a[7] = bc2 ^ (bc4 &^ bc3) + a[18] = bc3 ^ (bc0 &^ bc4) + a[4] = bc4 ^ (bc1 &^ bc0) + + // Round 4 + bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20] + bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21] + bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22] + bc3 = a[3] ^ a[8] ^ a[13] ^ a[18] ^ a[23] + bc4 = a[4] ^ a[9] ^ a[14] ^ a[19] ^ a[24] + d0 = bc4 ^ (bc1<<1 | bc1>>63) + d1 = bc0 ^ (bc2<<1 | bc2>>63) + d2 = bc1 ^ (bc3<<1 | bc3>>63) + d3 = bc2 ^ (bc4<<1 | bc4>>63) + d4 = bc3 ^ (bc0<<1 | bc0>>63) + + bc0 = a[0] ^ d0 + t = a[1] ^ d1 + bc1 = t<<44 | t>>(64-44) + t = a[2] ^ d2 + bc2 = t<<43 | t>>(64-43) + t = a[3] ^ d3 + bc3 = t<<21 | t>>(64-21) + t = a[4] ^ d4 + bc4 = t<<14 | t>>(64-14) + a[0] = bc0 ^ (bc2 &^ bc1) ^ rc[i+3] + a[1] = bc1 ^ (bc3 &^ bc2) + a[2] = bc2 ^ (bc4 &^ bc3) + a[3] = bc3 ^ (bc0 &^ bc4) + a[4] = bc4 ^ (bc1 &^ bc0) + + t = a[5] ^ d0 + bc2 = t<<3 | t>>(64-3) + t = a[6] ^ d1 + bc3 = t<<45 | t>>(64-45) + t = a[7] ^ d2 + bc4 = t<<61 | t>>(64-61) + t = a[8] ^ d3 + bc0 = t<<28 | t>>(64-28) + t = a[9] ^ d4 + bc1 = t<<20 | t>>(64-20) + a[5] = bc0 ^ (bc2 &^ bc1) + a[6] = bc1 ^ (bc3 &^ bc2) + a[7] = bc2 ^ (bc4 &^ bc3) + a[8] = bc3 ^ (bc0 &^ bc4) + a[9] = bc4 ^ (bc1 &^ bc0) + + t = a[10] ^ d0 + bc4 = t<<18 | t>>(64-18) + t = a[11] ^ d1 + bc0 = t<<1 | t>>(64-1) + t = a[12] ^ d2 + bc1 = t<<6 | t>>(64-6) + t = a[13] ^ d3 + bc2 = t<<25 | t>>(64-25) + t = a[14] ^ d4 + bc3 = t<<8 | t>>(64-8) + a[10] = bc0 ^ (bc2 &^ bc1) + a[11] = bc1 ^ (bc3 &^ bc2) + a[12] = bc2 ^ (bc4 &^ bc3) + a[13] = bc3 ^ (bc0 &^ bc4) + a[14] = bc4 ^ (bc1 &^ bc0) + + t = a[15] ^ d0 + bc1 = t<<36 | t>>(64-36) + t = a[16] ^ d1 + bc2 = t<<10 | t>>(64-10) + t = a[17] ^ d2 + bc3 = t<<15 | t>>(64-15) + t = a[18] ^ d3 + bc4 = t<<56 | t>>(64-56) + t = a[19] ^ d4 + bc0 = t<<27 | t>>(64-27) + a[15] = bc0 ^ (bc2 &^ bc1) + a[16] = bc1 ^ (bc3 &^ bc2) + a[17] = bc2 ^ (bc4 &^ bc3) + a[18] = bc3 ^ (bc0 &^ bc4) + a[19] = bc4 ^ (bc1 &^ bc0) + + t = a[20] ^ d0 + bc3 = t<<41 | t>>(64-41) + t = a[21] ^ d1 + bc4 = t<<2 | t>>(64-2) + t = a[22] ^ d2 + bc0 = t<<62 | t>>(64-62) + t = a[23] ^ d3 + bc1 = t<<55 | t>>(64-55) + t = a[24] ^ d4 + bc2 = t<<39 | t>>(64-39) + a[20] = bc0 ^ (bc2 &^ bc1) + a[21] = bc1 ^ (bc3 &^ bc2) + a[22] = bc2 ^ (bc4 &^ bc3) + a[23] = bc3 ^ (bc0 &^ bc4) + a[24] = bc4 ^ (bc1 &^ bc0) + } +} diff --git a/vendor/golang.org/x/crypto/sha3/keccakf_amd64.go b/vendor/golang.org/x/crypto/sha3/keccakf_amd64.go new file mode 100644 index 0000000..7886795 --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/keccakf_amd64.go @@ -0,0 +1,13 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build amd64,!appengine,!gccgo + +package sha3 + +// This function is implemented in keccakf_amd64.s. + +//go:noescape + +func keccakF1600(a *[25]uint64) diff --git a/vendor/golang.org/x/crypto/sha3/keccakf_amd64.s b/vendor/golang.org/x/crypto/sha3/keccakf_amd64.s new file mode 100644 index 0000000..f88533a --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/keccakf_amd64.s @@ -0,0 +1,390 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build amd64,!appengine,!gccgo + +// This code was translated into a form compatible with 6a from the public +// domain sources at https://github.com/gvanas/KeccakCodePackage + +// Offsets in state +#define _ba (0*8) +#define _be (1*8) +#define _bi (2*8) +#define _bo (3*8) +#define _bu (4*8) +#define _ga (5*8) +#define _ge (6*8) +#define _gi (7*8) +#define _go (8*8) +#define _gu (9*8) +#define _ka (10*8) +#define _ke (11*8) +#define _ki (12*8) +#define _ko (13*8) +#define _ku (14*8) +#define _ma (15*8) +#define _me (16*8) +#define _mi (17*8) +#define _mo (18*8) +#define _mu (19*8) +#define _sa (20*8) +#define _se (21*8) +#define _si (22*8) +#define _so (23*8) +#define _su (24*8) + +// Temporary registers +#define rT1 AX + +// Round vars +#define rpState DI +#define rpStack SP + +#define rDa BX +#define rDe CX +#define rDi DX +#define rDo R8 +#define rDu R9 + +#define rBa R10 +#define rBe R11 +#define rBi R12 +#define rBo R13 +#define rBu R14 + +#define rCa SI +#define rCe BP +#define rCi rBi +#define rCo rBo +#define rCu R15 + +#define MOVQ_RBI_RCE MOVQ rBi, rCe +#define XORQ_RT1_RCA XORQ rT1, rCa +#define XORQ_RT1_RCE XORQ rT1, rCe +#define XORQ_RBA_RCU XORQ rBa, rCu +#define XORQ_RBE_RCU XORQ rBe, rCu +#define XORQ_RDU_RCU XORQ rDu, rCu +#define XORQ_RDA_RCA XORQ rDa, rCa +#define XORQ_RDE_RCE XORQ rDe, rCe + +#define mKeccakRound(iState, oState, rc, B_RBI_RCE, G_RT1_RCA, G_RT1_RCE, G_RBA_RCU, K_RT1_RCA, K_RT1_RCE, K_RBA_RCU, M_RT1_RCA, M_RT1_RCE, M_RBE_RCU, S_RDU_RCU, S_RDA_RCA, S_RDE_RCE) \ + /* Prepare round */ \ + MOVQ rCe, rDa; \ + ROLQ $1, rDa; \ + \ + MOVQ _bi(iState), rCi; \ + XORQ _gi(iState), rDi; \ + XORQ rCu, rDa; \ + XORQ _ki(iState), rCi; \ + XORQ _mi(iState), rDi; \ + XORQ rDi, rCi; \ + \ + MOVQ rCi, rDe; \ + ROLQ $1, rDe; \ + \ + MOVQ _bo(iState), rCo; \ + XORQ _go(iState), rDo; \ + XORQ rCa, rDe; \ + XORQ _ko(iState), rCo; \ + XORQ _mo(iState), rDo; \ + XORQ rDo, rCo; \ + \ + MOVQ rCo, rDi; \ + ROLQ $1, rDi; \ + \ + MOVQ rCu, rDo; \ + XORQ rCe, rDi; \ + ROLQ $1, rDo; \ + \ + MOVQ rCa, rDu; \ + XORQ rCi, rDo; \ + ROLQ $1, rDu; \ + \ + /* Result b */ \ + MOVQ _ba(iState), rBa; \ + MOVQ _ge(iState), rBe; \ + XORQ rCo, rDu; \ + MOVQ _ki(iState), rBi; \ + MOVQ _mo(iState), rBo; \ + MOVQ _su(iState), rBu; \ + XORQ rDe, rBe; \ + ROLQ $44, rBe; \ + XORQ rDi, rBi; \ + XORQ rDa, rBa; \ + ROLQ $43, rBi; \ + \ + MOVQ rBe, rCa; \ + MOVQ rc, rT1; \ + ORQ rBi, rCa; \ + XORQ rBa, rT1; \ + XORQ rT1, rCa; \ + MOVQ rCa, _ba(oState); \ + \ + XORQ rDu, rBu; \ + ROLQ $14, rBu; \ + MOVQ rBa, rCu; \ + ANDQ rBe, rCu; \ + XORQ rBu, rCu; \ + MOVQ rCu, _bu(oState); \ + \ + XORQ rDo, rBo; \ + ROLQ $21, rBo; \ + MOVQ rBo, rT1; \ + ANDQ rBu, rT1; \ + XORQ rBi, rT1; \ + MOVQ rT1, _bi(oState); \ + \ + NOTQ rBi; \ + ORQ rBa, rBu; \ + ORQ rBo, rBi; \ + XORQ rBo, rBu; \ + XORQ rBe, rBi; \ + MOVQ rBu, _bo(oState); \ + MOVQ rBi, _be(oState); \ + B_RBI_RCE; \ + \ + /* Result g */ \ + MOVQ _gu(iState), rBe; \ + XORQ rDu, rBe; \ + MOVQ _ka(iState), rBi; \ + ROLQ $20, rBe; \ + XORQ rDa, rBi; \ + ROLQ $3, rBi; \ + MOVQ _bo(iState), rBa; \ + MOVQ rBe, rT1; \ + ORQ rBi, rT1; \ + XORQ rDo, rBa; \ + MOVQ _me(iState), rBo; \ + MOVQ _si(iState), rBu; \ + ROLQ $28, rBa; \ + XORQ rBa, rT1; \ + MOVQ rT1, _ga(oState); \ + G_RT1_RCA; \ + \ + XORQ rDe, rBo; \ + ROLQ $45, rBo; \ + MOVQ rBi, rT1; \ + ANDQ rBo, rT1; \ + XORQ rBe, rT1; \ + MOVQ rT1, _ge(oState); \ + G_RT1_RCE; \ + \ + XORQ rDi, rBu; \ + ROLQ $61, rBu; \ + MOVQ rBu, rT1; \ + ORQ rBa, rT1; \ + XORQ rBo, rT1; \ + MOVQ rT1, _go(oState); \ + \ + ANDQ rBe, rBa; \ + XORQ rBu, rBa; \ + MOVQ rBa, _gu(oState); \ + NOTQ rBu; \ + G_RBA_RCU; \ + \ + ORQ rBu, rBo; \ + XORQ rBi, rBo; \ + MOVQ rBo, _gi(oState); \ + \ + /* Result k */ \ + MOVQ _be(iState), rBa; \ + MOVQ _gi(iState), rBe; \ + MOVQ _ko(iState), rBi; \ + MOVQ _mu(iState), rBo; \ + MOVQ _sa(iState), rBu; \ + XORQ rDi, rBe; \ + ROLQ $6, rBe; \ + XORQ rDo, rBi; \ + ROLQ $25, rBi; \ + MOVQ rBe, rT1; \ + ORQ rBi, rT1; \ + XORQ rDe, rBa; \ + ROLQ $1, rBa; \ + XORQ rBa, rT1; \ + MOVQ rT1, _ka(oState); \ + K_RT1_RCA; \ + \ + XORQ rDu, rBo; \ + ROLQ $8, rBo; \ + MOVQ rBi, rT1; \ + ANDQ rBo, rT1; \ + XORQ rBe, rT1; \ + MOVQ rT1, _ke(oState); \ + K_RT1_RCE; \ + \ + XORQ rDa, rBu; \ + ROLQ $18, rBu; \ + NOTQ rBo; \ + MOVQ rBo, rT1; \ + ANDQ rBu, rT1; \ + XORQ rBi, rT1; \ + MOVQ rT1, _ki(oState); \ + \ + MOVQ rBu, rT1; \ + ORQ rBa, rT1; \ + XORQ rBo, rT1; \ + MOVQ rT1, _ko(oState); \ + \ + ANDQ rBe, rBa; \ + XORQ rBu, rBa; \ + MOVQ rBa, _ku(oState); \ + K_RBA_RCU; \ + \ + /* Result m */ \ + MOVQ _ga(iState), rBe; \ + XORQ rDa, rBe; \ + MOVQ _ke(iState), rBi; \ + ROLQ $36, rBe; \ + XORQ rDe, rBi; \ + MOVQ _bu(iState), rBa; \ + ROLQ $10, rBi; \ + MOVQ rBe, rT1; \ + MOVQ _mi(iState), rBo; \ + ANDQ rBi, rT1; \ + XORQ rDu, rBa; \ + MOVQ _so(iState), rBu; \ + ROLQ $27, rBa; \ + XORQ rBa, rT1; \ + MOVQ rT1, _ma(oState); \ + M_RT1_RCA; \ + \ + XORQ rDi, rBo; \ + ROLQ $15, rBo; \ + MOVQ rBi, rT1; \ + ORQ rBo, rT1; \ + XORQ rBe, rT1; \ + MOVQ rT1, _me(oState); \ + M_RT1_RCE; \ + \ + XORQ rDo, rBu; \ + ROLQ $56, rBu; \ + NOTQ rBo; \ + MOVQ rBo, rT1; \ + ORQ rBu, rT1; \ + XORQ rBi, rT1; \ + MOVQ rT1, _mi(oState); \ + \ + ORQ rBa, rBe; \ + XORQ rBu, rBe; \ + MOVQ rBe, _mu(oState); \ + \ + ANDQ rBa, rBu; \ + XORQ rBo, rBu; \ + MOVQ rBu, _mo(oState); \ + M_RBE_RCU; \ + \ + /* Result s */ \ + MOVQ _bi(iState), rBa; \ + MOVQ _go(iState), rBe; \ + MOVQ _ku(iState), rBi; \ + XORQ rDi, rBa; \ + MOVQ _ma(iState), rBo; \ + ROLQ $62, rBa; \ + XORQ rDo, rBe; \ + MOVQ _se(iState), rBu; \ + ROLQ $55, rBe; \ + \ + XORQ rDu, rBi; \ + MOVQ rBa, rDu; \ + XORQ rDe, rBu; \ + ROLQ $2, rBu; \ + ANDQ rBe, rDu; \ + XORQ rBu, rDu; \ + MOVQ rDu, _su(oState); \ + \ + ROLQ $39, rBi; \ + S_RDU_RCU; \ + NOTQ rBe; \ + XORQ rDa, rBo; \ + MOVQ rBe, rDa; \ + ANDQ rBi, rDa; \ + XORQ rBa, rDa; \ + MOVQ rDa, _sa(oState); \ + S_RDA_RCA; \ + \ + ROLQ $41, rBo; \ + MOVQ rBi, rDe; \ + ORQ rBo, rDe; \ + XORQ rBe, rDe; \ + MOVQ rDe, _se(oState); \ + S_RDE_RCE; \ + \ + MOVQ rBo, rDi; \ + MOVQ rBu, rDo; \ + ANDQ rBu, rDi; \ + ORQ rBa, rDo; \ + XORQ rBi, rDi; \ + XORQ rBo, rDo; \ + MOVQ rDi, _si(oState); \ + MOVQ rDo, _so(oState) \ + +// func keccakF1600(state *[25]uint64) +TEXT ·keccakF1600(SB), 0, $200-8 + MOVQ state+0(FP), rpState + + // Convert the user state into an internal state + NOTQ _be(rpState) + NOTQ _bi(rpState) + NOTQ _go(rpState) + NOTQ _ki(rpState) + NOTQ _mi(rpState) + NOTQ _sa(rpState) + + // Execute the KeccakF permutation + MOVQ _ba(rpState), rCa + MOVQ _be(rpState), rCe + MOVQ _bu(rpState), rCu + + XORQ _ga(rpState), rCa + XORQ _ge(rpState), rCe + XORQ _gu(rpState), rCu + + XORQ _ka(rpState), rCa + XORQ _ke(rpState), rCe + XORQ _ku(rpState), rCu + + XORQ _ma(rpState), rCa + XORQ _me(rpState), rCe + XORQ _mu(rpState), rCu + + XORQ _sa(rpState), rCa + XORQ _se(rpState), rCe + MOVQ _si(rpState), rDi + MOVQ _so(rpState), rDo + XORQ _su(rpState), rCu + + mKeccakRound(rpState, rpStack, $0x0000000000000001, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpStack, rpState, $0x0000000000008082, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpState, rpStack, $0x800000000000808a, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpStack, rpState, $0x8000000080008000, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpState, rpStack, $0x000000000000808b, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpStack, rpState, $0x0000000080000001, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpState, rpStack, $0x8000000080008081, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpStack, rpState, $0x8000000000008009, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpState, rpStack, $0x000000000000008a, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpStack, rpState, $0x0000000000000088, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpState, rpStack, $0x0000000080008009, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpStack, rpState, $0x000000008000000a, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpState, rpStack, $0x000000008000808b, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpStack, rpState, $0x800000000000008b, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpState, rpStack, $0x8000000000008089, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpStack, rpState, $0x8000000000008003, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpState, rpStack, $0x8000000000008002, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpStack, rpState, $0x8000000000000080, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpState, rpStack, $0x000000000000800a, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpStack, rpState, $0x800000008000000a, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpState, rpStack, $0x8000000080008081, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpStack, rpState, $0x8000000000008080, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpState, rpStack, $0x0000000080000001, MOVQ_RBI_RCE, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBA_RCU, XORQ_RT1_RCA, XORQ_RT1_RCE, XORQ_RBE_RCU, XORQ_RDU_RCU, XORQ_RDA_RCA, XORQ_RDE_RCE) + mKeccakRound(rpStack, rpState, $0x8000000080008008, NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP) + + // Revert the internal state to the user state + NOTQ _be(rpState) + NOTQ _bi(rpState) + NOTQ _go(rpState) + NOTQ _ki(rpState) + NOTQ _mi(rpState) + NOTQ _sa(rpState) + + RET diff --git a/vendor/golang.org/x/crypto/sha3/register.go b/vendor/golang.org/x/crypto/sha3/register.go new file mode 100644 index 0000000..3cf6a22 --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/register.go @@ -0,0 +1,18 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build go1.4 + +package sha3 + +import ( + "crypto" +) + +func init() { + crypto.RegisterHash(crypto.SHA3_224, New224) + crypto.RegisterHash(crypto.SHA3_256, New256) + crypto.RegisterHash(crypto.SHA3_384, New384) + crypto.RegisterHash(crypto.SHA3_512, New512) +} diff --git a/vendor/golang.org/x/crypto/sha3/sha3.go b/vendor/golang.org/x/crypto/sha3/sha3.go new file mode 100644 index 0000000..b12a35c --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/sha3.go @@ -0,0 +1,192 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package sha3 + +// spongeDirection indicates the direction bytes are flowing through the sponge. +type spongeDirection int + +const ( + // spongeAbsorbing indicates that the sponge is absorbing input. + spongeAbsorbing spongeDirection = iota + // spongeSqueezing indicates that the sponge is being squeezed. + spongeSqueezing +) + +const ( + // maxRate is the maximum size of the internal buffer. SHAKE-256 + // currently needs the largest buffer. + maxRate = 168 +) + +type state struct { + // Generic sponge components. + a [25]uint64 // main state of the hash + buf []byte // points into storage + rate int // the number of bytes of state to use + + // dsbyte contains the "domain separation" bits and the first bit of + // the padding. Sections 6.1 and 6.2 of [1] separate the outputs of the + // SHA-3 and SHAKE functions by appending bitstrings to the message. + // Using a little-endian bit-ordering convention, these are "01" for SHA-3 + // and "1111" for SHAKE, or 00000010b and 00001111b, respectively. Then the + // padding rule from section 5.1 is applied to pad the message to a multiple + // of the rate, which involves adding a "1" bit, zero or more "0" bits, and + // a final "1" bit. We merge the first "1" bit from the padding into dsbyte, + // giving 00000110b (0x06) and 00011111b (0x1f). + // [1] http://csrc.nist.gov/publications/drafts/fips-202/fips_202_draft.pdf + // "Draft FIPS 202: SHA-3 Standard: Permutation-Based Hash and + // Extendable-Output Functions (May 2014)" + dsbyte byte + storage [maxRate]byte + + // Specific to SHA-3 and SHAKE. + outputLen int // the default output size in bytes + state spongeDirection // whether the sponge is absorbing or squeezing +} + +// BlockSize returns the rate of sponge underlying this hash function. +func (d *state) BlockSize() int { return d.rate } + +// Size returns the output size of the hash function in bytes. +func (d *state) Size() int { return d.outputLen } + +// Reset clears the internal state by zeroing the sponge state and +// the byte buffer, and setting Sponge.state to absorbing. +func (d *state) Reset() { + // Zero the permutation's state. + for i := range d.a { + d.a[i] = 0 + } + d.state = spongeAbsorbing + d.buf = d.storage[:0] +} + +func (d *state) clone() *state { + ret := *d + if ret.state == spongeAbsorbing { + ret.buf = ret.storage[:len(ret.buf)] + } else { + ret.buf = ret.storage[d.rate-cap(d.buf) : d.rate] + } + + return &ret +} + +// permute applies the KeccakF-1600 permutation. It handles +// any input-output buffering. +func (d *state) permute() { + switch d.state { + case spongeAbsorbing: + // If we're absorbing, we need to xor the input into the state + // before applying the permutation. + xorIn(d, d.buf) + d.buf = d.storage[:0] + keccakF1600(&d.a) + case spongeSqueezing: + // If we're squeezing, we need to apply the permutatin before + // copying more output. + keccakF1600(&d.a) + d.buf = d.storage[:d.rate] + copyOut(d, d.buf) + } +} + +// pads appends the domain separation bits in dsbyte, applies +// the multi-bitrate 10..1 padding rule, and permutes the state. +func (d *state) padAndPermute(dsbyte byte) { + if d.buf == nil { + d.buf = d.storage[:0] + } + // Pad with this instance's domain-separator bits. We know that there's + // at least one byte of space in d.buf because, if it were full, + // permute would have been called to empty it. dsbyte also contains the + // first one bit for the padding. See the comment in the state struct. + d.buf = append(d.buf, dsbyte) + zerosStart := len(d.buf) + d.buf = d.storage[:d.rate] + for i := zerosStart; i < d.rate; i++ { + d.buf[i] = 0 + } + // This adds the final one bit for the padding. Because of the way that + // bits are numbered from the LSB upwards, the final bit is the MSB of + // the last byte. + d.buf[d.rate-1] ^= 0x80 + // Apply the permutation + d.permute() + d.state = spongeSqueezing + d.buf = d.storage[:d.rate] + copyOut(d, d.buf) +} + +// Write absorbs more data into the hash's state. It produces an error +// if more data is written to the ShakeHash after writing +func (d *state) Write(p []byte) (written int, err error) { + if d.state != spongeAbsorbing { + panic("sha3: write to sponge after read") + } + if d.buf == nil { + d.buf = d.storage[:0] + } + written = len(p) + + for len(p) > 0 { + if len(d.buf) == 0 && len(p) >= d.rate { + // The fast path; absorb a full "rate" bytes of input and apply the permutation. + xorIn(d, p[:d.rate]) + p = p[d.rate:] + keccakF1600(&d.a) + } else { + // The slow path; buffer the input until we can fill the sponge, and then xor it in. + todo := d.rate - len(d.buf) + if todo > len(p) { + todo = len(p) + } + d.buf = append(d.buf, p[:todo]...) + p = p[todo:] + + // If the sponge is full, apply the permutation. + if len(d.buf) == d.rate { + d.permute() + } + } + } + + return +} + +// Read squeezes an arbitrary number of bytes from the sponge. +func (d *state) Read(out []byte) (n int, err error) { + // If we're still absorbing, pad and apply the permutation. + if d.state == spongeAbsorbing { + d.padAndPermute(d.dsbyte) + } + + n = len(out) + + // Now, do the squeezing. + for len(out) > 0 { + n := copy(out, d.buf) + d.buf = d.buf[n:] + out = out[n:] + + // Apply the permutation if we've squeezed the sponge dry. + if len(d.buf) == 0 { + d.permute() + } + } + + return +} + +// Sum applies padding to the hash state and then squeezes out the desired +// number of output bytes. +func (d *state) Sum(in []byte) []byte { + // Make a copy of the original hash so that caller can keep writing + // and summing. + dup := d.clone() + hash := make([]byte, dup.outputLen) + dup.Read(hash) + return append(in, hash...) +} diff --git a/vendor/golang.org/x/crypto/sha3/sha3_s390x.go b/vendor/golang.org/x/crypto/sha3/sha3_s390x.go new file mode 100644 index 0000000..b6cbc5c --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/sha3_s390x.go @@ -0,0 +1,284 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//+build !gccgo,!appengine + +package sha3 + +// This file contains code for using the 'compute intermediate +// message digest' (KIMD) and 'compute last message digest' (KLMD) +// instructions to compute SHA-3 and SHAKE hashes on IBM Z. + +import ( + "hash" + + "golang.org/x/sys/cpu" +) + +// codes represent 7-bit KIMD/KLMD function codes as defined in +// the Principles of Operation. +type code uint64 + +const ( + // function codes for KIMD/KLMD + sha3_224 code = 32 + sha3_256 = 33 + sha3_384 = 34 + sha3_512 = 35 + shake_128 = 36 + shake_256 = 37 + nopad = 0x100 +) + +// kimd is a wrapper for the 'compute intermediate message digest' instruction. +// src must be a multiple of the rate for the given function code. +//go:noescape +func kimd(function code, chain *[200]byte, src []byte) + +// klmd is a wrapper for the 'compute last message digest' instruction. +// src padding is handled by the instruction. +//go:noescape +func klmd(function code, chain *[200]byte, dst, src []byte) + +type asmState struct { + a [200]byte // 1600 bit state + buf []byte // care must be taken to ensure cap(buf) is a multiple of rate + rate int // equivalent to block size + storage [3072]byte // underlying storage for buf + outputLen int // output length if fixed, 0 if not + function code // KIMD/KLMD function code + state spongeDirection // whether the sponge is absorbing or squeezing +} + +func newAsmState(function code) *asmState { + var s asmState + s.function = function + switch function { + case sha3_224: + s.rate = 144 + s.outputLen = 28 + case sha3_256: + s.rate = 136 + s.outputLen = 32 + case sha3_384: + s.rate = 104 + s.outputLen = 48 + case sha3_512: + s.rate = 72 + s.outputLen = 64 + case shake_128: + s.rate = 168 + case shake_256: + s.rate = 136 + default: + panic("sha3: unrecognized function code") + } + + // limit s.buf size to a multiple of s.rate + s.resetBuf() + return &s +} + +func (s *asmState) clone() *asmState { + c := *s + c.buf = c.storage[:len(s.buf):cap(s.buf)] + return &c +} + +// copyIntoBuf copies b into buf. It will panic if there is not enough space to +// store all of b. +func (s *asmState) copyIntoBuf(b []byte) { + bufLen := len(s.buf) + s.buf = s.buf[:len(s.buf)+len(b)] + copy(s.buf[bufLen:], b) +} + +// resetBuf points buf at storage, sets the length to 0 and sets cap to be a +// multiple of the rate. +func (s *asmState) resetBuf() { + max := (cap(s.storage) / s.rate) * s.rate + s.buf = s.storage[:0:max] +} + +// Write (via the embedded io.Writer interface) adds more data to the running hash. +// It never returns an error. +func (s *asmState) Write(b []byte) (int, error) { + if s.state != spongeAbsorbing { + panic("sha3: write to sponge after read") + } + length := len(b) + for len(b) > 0 { + if len(s.buf) == 0 && len(b) >= cap(s.buf) { + // Hash the data directly and push any remaining bytes + // into the buffer. + remainder := len(s.buf) % s.rate + kimd(s.function, &s.a, b[:len(b)-remainder]) + if remainder != 0 { + s.copyIntoBuf(b[len(b)-remainder:]) + } + return length, nil + } + + if len(s.buf) == cap(s.buf) { + // flush the buffer + kimd(s.function, &s.a, s.buf) + s.buf = s.buf[:0] + } + + // copy as much as we can into the buffer + n := len(b) + if len(b) > cap(s.buf)-len(s.buf) { + n = cap(s.buf) - len(s.buf) + } + s.copyIntoBuf(b[:n]) + b = b[n:] + } + return length, nil +} + +// Read squeezes an arbitrary number of bytes from the sponge. +func (s *asmState) Read(out []byte) (n int, err error) { + n = len(out) + + // need to pad if we were absorbing + if s.state == spongeAbsorbing { + s.state = spongeSqueezing + + // write hash directly into out if possible + if len(out)%s.rate == 0 { + klmd(s.function, &s.a, out, s.buf) // len(out) may be 0 + s.buf = s.buf[:0] + return + } + + // write hash into buffer + max := cap(s.buf) + if max > len(out) { + max = (len(out)/s.rate)*s.rate + s.rate + } + klmd(s.function, &s.a, s.buf[:max], s.buf) + s.buf = s.buf[:max] + } + + for len(out) > 0 { + // flush the buffer + if len(s.buf) != 0 { + c := copy(out, s.buf) + out = out[c:] + s.buf = s.buf[c:] + continue + } + + // write hash directly into out if possible + if len(out)%s.rate == 0 { + klmd(s.function|nopad, &s.a, out, nil) + return + } + + // write hash into buffer + s.resetBuf() + if cap(s.buf) > len(out) { + s.buf = s.buf[:(len(out)/s.rate)*s.rate+s.rate] + } + klmd(s.function|nopad, &s.a, s.buf, nil) + } + return +} + +// Sum appends the current hash to b and returns the resulting slice. +// It does not change the underlying hash state. +func (s *asmState) Sum(b []byte) []byte { + if s.outputLen == 0 { + panic("sha3: cannot call Sum on SHAKE functions") + } + + // Copy the state to preserve the original. + a := s.a + + // Hash the buffer. Note that we don't clear it because we + // aren't updating the state. + klmd(s.function, &a, nil, s.buf) + return append(b, a[:s.outputLen]...) +} + +// Reset resets the Hash to its initial state. +func (s *asmState) Reset() { + for i := range s.a { + s.a[i] = 0 + } + s.resetBuf() + s.state = spongeAbsorbing +} + +// Size returns the number of bytes Sum will return. +func (s *asmState) Size() int { + return s.outputLen +} + +// BlockSize returns the hash's underlying block size. +// The Write method must be able to accept any amount +// of data, but it may operate more efficiently if all writes +// are a multiple of the block size. +func (s *asmState) BlockSize() int { + return s.rate +} + +// Clone returns a copy of the ShakeHash in its current state. +func (s *asmState) Clone() ShakeHash { + return s.clone() +} + +// new224Asm returns an assembly implementation of SHA3-224 if available, +// otherwise it returns nil. +func new224Asm() hash.Hash { + if cpu.S390X.HasSHA3 { + return newAsmState(sha3_224) + } + return nil +} + +// new256Asm returns an assembly implementation of SHA3-256 if available, +// otherwise it returns nil. +func new256Asm() hash.Hash { + if cpu.S390X.HasSHA3 { + return newAsmState(sha3_256) + } + return nil +} + +// new384Asm returns an assembly implementation of SHA3-384 if available, +// otherwise it returns nil. +func new384Asm() hash.Hash { + if cpu.S390X.HasSHA3 { + return newAsmState(sha3_384) + } + return nil +} + +// new512Asm returns an assembly implementation of SHA3-512 if available, +// otherwise it returns nil. +func new512Asm() hash.Hash { + if cpu.S390X.HasSHA3 { + return newAsmState(sha3_512) + } + return nil +} + +// newShake128Asm returns an assembly implementation of SHAKE-128 if available, +// otherwise it returns nil. +func newShake128Asm() ShakeHash { + if cpu.S390X.HasSHA3 { + return newAsmState(shake_128) + } + return nil +} + +// newShake256Asm returns an assembly implementation of SHAKE-256 if available, +// otherwise it returns nil. +func newShake256Asm() ShakeHash { + if cpu.S390X.HasSHA3 { + return newAsmState(shake_256) + } + return nil +} diff --git a/vendor/golang.org/x/crypto/sha3/sha3_s390x.s b/vendor/golang.org/x/crypto/sha3/sha3_s390x.s new file mode 100644 index 0000000..b2ef69f --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/sha3_s390x.s @@ -0,0 +1,33 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//+build !gccgo,!appengine + +#include "textflag.h" + +// func kimd(function code, chain *[200]byte, src []byte) +TEXT ·kimd(SB), NOFRAME|NOSPLIT, $0-40 + MOVD function+0(FP), R0 + MOVD chain+8(FP), R1 + LMG src+16(FP), R2, R3 // R2=base, R3=len + +continue: + WORD $0xB93E0002 // KIMD --, R2 + BVS continue // continue if interrupted + MOVD $0, R0 // reset R0 for pre-go1.8 compilers + RET + +// func klmd(function code, chain *[200]byte, dst, src []byte) +TEXT ·klmd(SB), NOFRAME|NOSPLIT, $0-64 + // TODO: SHAKE support + MOVD function+0(FP), R0 + MOVD chain+8(FP), R1 + LMG dst+16(FP), R2, R3 // R2=base, R3=len + LMG src+40(FP), R4, R5 // R4=base, R5=len + +continue: + WORD $0xB93F0024 // KLMD R2, R4 + BVS continue // continue if interrupted + MOVD $0, R0 // reset R0 for pre-go1.8 compilers + RET diff --git a/vendor/golang.org/x/crypto/sha3/shake.go b/vendor/golang.org/x/crypto/sha3/shake.go new file mode 100644 index 0000000..d7be295 --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/shake.go @@ -0,0 +1,173 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package sha3 + +// This file defines the ShakeHash interface, and provides +// functions for creating SHAKE and cSHAKE instances, as well as utility +// functions for hashing bytes to arbitrary-length output. +// +// +// SHAKE implementation is based on FIPS PUB 202 [1] +// cSHAKE implementations is based on NIST SP 800-185 [2] +// +// [1] https://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf +// [2] https://doi.org/10.6028/NIST.SP.800-185 + +import ( + "encoding/binary" + "io" +) + +// ShakeHash defines the interface to hash functions that +// support arbitrary-length output. +type ShakeHash interface { + // Write absorbs more data into the hash's state. It panics if input is + // written to it after output has been read from it. + io.Writer + + // Read reads more output from the hash; reading affects the hash's + // state. (ShakeHash.Read is thus very different from Hash.Sum) + // It never returns an error. + io.Reader + + // Clone returns a copy of the ShakeHash in its current state. + Clone() ShakeHash + + // Reset resets the ShakeHash to its initial state. + Reset() +} + +// cSHAKE specific context +type cshakeState struct { + *state // SHA-3 state context and Read/Write operations + + // initBlock is the cSHAKE specific initialization set of bytes. It is initialized + // by newCShake function and stores concatenation of N followed by S, encoded + // by the method specified in 3.3 of [1]. + // It is stored here in order for Reset() to be able to put context into + // initial state. + initBlock []byte +} + +// Consts for configuring initial SHA-3 state +const ( + dsbyteShake = 0x1f + dsbyteCShake = 0x04 + rate128 = 168 + rate256 = 136 +) + +func bytepad(input []byte, w int) []byte { + // leftEncode always returns max 9 bytes + buf := make([]byte, 0, 9+len(input)+w) + buf = append(buf, leftEncode(uint64(w))...) + buf = append(buf, input...) + padlen := w - (len(buf) % w) + return append(buf, make([]byte, padlen)...) +} + +func leftEncode(value uint64) []byte { + var b [9]byte + binary.BigEndian.PutUint64(b[1:], value) + // Trim all but last leading zero bytes + i := byte(1) + for i < 8 && b[i] == 0 { + i++ + } + // Prepend number of encoded bytes + b[i-1] = 9 - i + return b[i-1:] +} + +func newCShake(N, S []byte, rate int, dsbyte byte) ShakeHash { + c := cshakeState{state: &state{rate: rate, dsbyte: dsbyte}} + + // leftEncode returns max 9 bytes + c.initBlock = make([]byte, 0, 9*2+len(N)+len(S)) + c.initBlock = append(c.initBlock, leftEncode(uint64(len(N)*8))...) + c.initBlock = append(c.initBlock, N...) + c.initBlock = append(c.initBlock, leftEncode(uint64(len(S)*8))...) + c.initBlock = append(c.initBlock, S...) + c.Write(bytepad(c.initBlock, c.rate)) + return &c +} + +// Reset resets the hash to initial state. +func (c *cshakeState) Reset() { + c.state.Reset() + c.Write(bytepad(c.initBlock, c.rate)) +} + +// Clone returns copy of a cSHAKE context within its current state. +func (c *cshakeState) Clone() ShakeHash { + b := make([]byte, len(c.initBlock)) + copy(b, c.initBlock) + return &cshakeState{state: c.clone(), initBlock: b} +} + +// Clone returns copy of SHAKE context within its current state. +func (c *state) Clone() ShakeHash { + return c.clone() +} + +// NewShake128 creates a new SHAKE128 variable-output-length ShakeHash. +// Its generic security strength is 128 bits against all attacks if at +// least 32 bytes of its output are used. +func NewShake128() ShakeHash { + if h := newShake128Asm(); h != nil { + return h + } + return &state{rate: rate128, dsbyte: dsbyteShake} +} + +// NewShake256 creates a new SHAKE256 variable-output-length ShakeHash. +// Its generic security strength is 256 bits against all attacks if +// at least 64 bytes of its output are used. +func NewShake256() ShakeHash { + if h := newShake256Asm(); h != nil { + return h + } + return &state{rate: rate256, dsbyte: dsbyteShake} +} + +// NewCShake128 creates a new instance of cSHAKE128 variable-output-length ShakeHash, +// a customizable variant of SHAKE128. +// N is used to define functions based on cSHAKE, it can be empty when plain cSHAKE is +// desired. S is a customization byte string used for domain separation - two cSHAKE +// computations on same input with different S yield unrelated outputs. +// When N and S are both empty, this is equivalent to NewShake128. +func NewCShake128(N, S []byte) ShakeHash { + if len(N) == 0 && len(S) == 0 { + return NewShake128() + } + return newCShake(N, S, rate128, dsbyteCShake) +} + +// NewCShake256 creates a new instance of cSHAKE256 variable-output-length ShakeHash, +// a customizable variant of SHAKE256. +// N is used to define functions based on cSHAKE, it can be empty when plain cSHAKE is +// desired. S is a customization byte string used for domain separation - two cSHAKE +// computations on same input with different S yield unrelated outputs. +// When N and S are both empty, this is equivalent to NewShake256. +func NewCShake256(N, S []byte) ShakeHash { + if len(N) == 0 && len(S) == 0 { + return NewShake256() + } + return newCShake(N, S, rate256, dsbyteCShake) +} + +// ShakeSum128 writes an arbitrary-length digest of data into hash. +func ShakeSum128(hash, data []byte) { + h := NewShake128() + h.Write(data) + h.Read(hash) +} + +// ShakeSum256 writes an arbitrary-length digest of data into hash. +func ShakeSum256(hash, data []byte) { + h := NewShake256() + h.Write(data) + h.Read(hash) +} diff --git a/vendor/golang.org/x/crypto/sha3/shake_generic.go b/vendor/golang.org/x/crypto/sha3/shake_generic.go new file mode 100644 index 0000000..73d0c90 --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/shake_generic.go @@ -0,0 +1,19 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//+build gccgo appengine !s390x + +package sha3 + +// newShake128Asm returns an assembly implementation of SHAKE-128 if available, +// otherwise it returns nil. +func newShake128Asm() ShakeHash { + return nil +} + +// newShake256Asm returns an assembly implementation of SHAKE-256 if available, +// otherwise it returns nil. +func newShake256Asm() ShakeHash { + return nil +} diff --git a/vendor/golang.org/x/crypto/sha3/xor.go b/vendor/golang.org/x/crypto/sha3/xor.go new file mode 100644 index 0000000..46a0d63 --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/xor.go @@ -0,0 +1,16 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build !amd64,!386,!ppc64le appengine + +package sha3 + +var ( + xorIn = xorInGeneric + copyOut = copyOutGeneric + xorInUnaligned = xorInGeneric + copyOutUnaligned = copyOutGeneric +) + +const xorImplementationUnaligned = "generic" diff --git a/vendor/golang.org/x/crypto/sha3/xor_generic.go b/vendor/golang.org/x/crypto/sha3/xor_generic.go new file mode 100644 index 0000000..fd35f02 --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/xor_generic.go @@ -0,0 +1,28 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package sha3 + +import "encoding/binary" + +// xorInGeneric xors the bytes in buf into the state; it +// makes no non-portable assumptions about memory layout +// or alignment. +func xorInGeneric(d *state, buf []byte) { + n := len(buf) / 8 + + for i := 0; i < n; i++ { + a := binary.LittleEndian.Uint64(buf) + d.a[i] ^= a + buf = buf[8:] + } +} + +// copyOutGeneric copies ulint64s to a byte buffer. +func copyOutGeneric(d *state, b []byte) { + for i := 0; len(b) >= 8; i++ { + binary.LittleEndian.PutUint64(b, d.a[i]) + b = b[8:] + } +} diff --git a/vendor/golang.org/x/crypto/sha3/xor_unaligned.go b/vendor/golang.org/x/crypto/sha3/xor_unaligned.go new file mode 100644 index 0000000..929a486 --- /dev/null +++ b/vendor/golang.org/x/crypto/sha3/xor_unaligned.go @@ -0,0 +1,58 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build amd64 386 ppc64le +// +build !appengine + +package sha3 + +import "unsafe" + +func xorInUnaligned(d *state, buf []byte) { + bw := (*[maxRate / 8]uint64)(unsafe.Pointer(&buf[0])) + n := len(buf) + if n >= 72 { + d.a[0] ^= bw[0] + d.a[1] ^= bw[1] + d.a[2] ^= bw[2] + d.a[3] ^= bw[3] + d.a[4] ^= bw[4] + d.a[5] ^= bw[5] + d.a[6] ^= bw[6] + d.a[7] ^= bw[7] + d.a[8] ^= bw[8] + } + if n >= 104 { + d.a[9] ^= bw[9] + d.a[10] ^= bw[10] + d.a[11] ^= bw[11] + d.a[12] ^= bw[12] + } + if n >= 136 { + d.a[13] ^= bw[13] + d.a[14] ^= bw[14] + d.a[15] ^= bw[15] + d.a[16] ^= bw[16] + } + if n >= 144 { + d.a[17] ^= bw[17] + } + if n >= 168 { + d.a[18] ^= bw[18] + d.a[19] ^= bw[19] + d.a[20] ^= bw[20] + } +} + +func copyOutUnaligned(d *state, buf []byte) { + ab := (*[maxRate]uint8)(unsafe.Pointer(&d.a[0])) + copy(buf, ab[:]) +} + +var ( + xorIn = xorInUnaligned + copyOut = copyOutUnaligned +) + +const xorImplementationUnaligned = "unaligned" diff --git a/vendor/golang.org/x/net/AUTHORS b/vendor/golang.org/x/net/AUTHORS new file mode 100644 index 0000000..15167cd --- /dev/null +++ b/vendor/golang.org/x/net/AUTHORS @@ -0,0 +1,3 @@ +# This source code refers to The Go Authors for copyright purposes. +# The master list of authors is in the main Go distribution, +# visible at http://tip.golang.org/AUTHORS. diff --git a/vendor/golang.org/x/net/CONTRIBUTORS b/vendor/golang.org/x/net/CONTRIBUTORS new file mode 100644 index 0000000..1c4577e --- /dev/null +++ b/vendor/golang.org/x/net/CONTRIBUTORS @@ -0,0 +1,3 @@ +# This source code was written by the Go contributors. +# The master list of contributors is in the main Go distribution, +# visible at http://tip.golang.org/CONTRIBUTORS. diff --git a/vendor/golang.org/x/net/LICENSE b/vendor/golang.org/x/net/LICENSE new file mode 100644 index 0000000..6a66aea --- /dev/null +++ b/vendor/golang.org/x/net/LICENSE @@ -0,0 +1,27 @@ +Copyright (c) 2009 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/vendor/golang.org/x/net/PATENTS b/vendor/golang.org/x/net/PATENTS new file mode 100644 index 0000000..7330990 --- /dev/null +++ b/vendor/golang.org/x/net/PATENTS @@ -0,0 +1,22 @@ +Additional IP Rights Grant (Patents) + +"This implementation" means the copyrightable works distributed by +Google as part of the Go project. + +Google hereby grants to You a perpetual, worldwide, non-exclusive, +no-charge, royalty-free, irrevocable (except as stated in this section) +patent license to make, have made, use, offer to sell, sell, import, +transfer and otherwise run, modify and propagate the contents of this +implementation of Go, where such license applies only to those patent +claims, both currently owned or controlled by Google and acquired in +the future, licensable by Google that are necessarily infringed by this +implementation of Go. This grant does not include claims that would be +infringed only as a consequence of further modification of this +implementation. If you or your agent or exclusive licensee institute or +order or agree to the institution of patent litigation against any +entity (including a cross-claim or counterclaim in a lawsuit) alleging +that this implementation of Go or any code incorporated within this +implementation of Go constitutes direct or contributory patent +infringement, or inducement of patent infringement, then any patent +rights granted to you under this License for this implementation of Go +shall terminate as of the date such litigation is filed. diff --git a/vendor/golang.org/x/net/internal/socks/client.go b/vendor/golang.org/x/net/internal/socks/client.go new file mode 100644 index 0000000..3d6f516 --- /dev/null +++ b/vendor/golang.org/x/net/internal/socks/client.go @@ -0,0 +1,168 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package socks + +import ( + "context" + "errors" + "io" + "net" + "strconv" + "time" +) + +var ( + noDeadline = time.Time{} + aLongTimeAgo = time.Unix(1, 0) +) + +func (d *Dialer) connect(ctx context.Context, c net.Conn, address string) (_ net.Addr, ctxErr error) { + host, port, err := splitHostPort(address) + if err != nil { + return nil, err + } + if deadline, ok := ctx.Deadline(); ok && !deadline.IsZero() { + c.SetDeadline(deadline) + defer c.SetDeadline(noDeadline) + } + if ctx != context.Background() { + errCh := make(chan error, 1) + done := make(chan struct{}) + defer func() { + close(done) + if ctxErr == nil { + ctxErr = <-errCh + } + }() + go func() { + select { + case <-ctx.Done(): + c.SetDeadline(aLongTimeAgo) + errCh <- ctx.Err() + case <-done: + errCh <- nil + } + }() + } + + b := make([]byte, 0, 6+len(host)) // the size here is just an estimate + b = append(b, Version5) + if len(d.AuthMethods) == 0 || d.Authenticate == nil { + b = append(b, 1, byte(AuthMethodNotRequired)) + } else { + ams := d.AuthMethods + if len(ams) > 255 { + return nil, errors.New("too many authentication methods") + } + b = append(b, byte(len(ams))) + for _, am := range ams { + b = append(b, byte(am)) + } + } + if _, ctxErr = c.Write(b); ctxErr != nil { + return + } + + if _, ctxErr = io.ReadFull(c, b[:2]); ctxErr != nil { + return + } + if b[0] != Version5 { + return nil, errors.New("unexpected protocol version " + strconv.Itoa(int(b[0]))) + } + am := AuthMethod(b[1]) + if am == AuthMethodNoAcceptableMethods { + return nil, errors.New("no acceptable authentication methods") + } + if d.Authenticate != nil { + if ctxErr = d.Authenticate(ctx, c, am); ctxErr != nil { + return + } + } + + b = b[:0] + b = append(b, Version5, byte(d.cmd), 0) + if ip := net.ParseIP(host); ip != nil { + if ip4 := ip.To4(); ip4 != nil { + b = append(b, AddrTypeIPv4) + b = append(b, ip4...) + } else if ip6 := ip.To16(); ip6 != nil { + b = append(b, AddrTypeIPv6) + b = append(b, ip6...) + } else { + return nil, errors.New("unknown address type") + } + } else { + if len(host) > 255 { + return nil, errors.New("FQDN too long") + } + b = append(b, AddrTypeFQDN) + b = append(b, byte(len(host))) + b = append(b, host...) + } + b = append(b, byte(port>>8), byte(port)) + if _, ctxErr = c.Write(b); ctxErr != nil { + return + } + + if _, ctxErr = io.ReadFull(c, b[:4]); ctxErr != nil { + return + } + if b[0] != Version5 { + return nil, errors.New("unexpected protocol version " + strconv.Itoa(int(b[0]))) + } + if cmdErr := Reply(b[1]); cmdErr != StatusSucceeded { + return nil, errors.New("unknown error " + cmdErr.String()) + } + if b[2] != 0 { + return nil, errors.New("non-zero reserved field") + } + l := 2 + var a Addr + switch b[3] { + case AddrTypeIPv4: + l += net.IPv4len + a.IP = make(net.IP, net.IPv4len) + case AddrTypeIPv6: + l += net.IPv6len + a.IP = make(net.IP, net.IPv6len) + case AddrTypeFQDN: + if _, err := io.ReadFull(c, b[:1]); err != nil { + return nil, err + } + l += int(b[0]) + default: + return nil, errors.New("unknown address type " + strconv.Itoa(int(b[3]))) + } + if cap(b) < l { + b = make([]byte, l) + } else { + b = b[:l] + } + if _, ctxErr = io.ReadFull(c, b); ctxErr != nil { + return + } + if a.IP != nil { + copy(a.IP, b) + } else { + a.Name = string(b[:len(b)-2]) + } + a.Port = int(b[len(b)-2])<<8 | int(b[len(b)-1]) + return &a, nil +} + +func splitHostPort(address string) (string, int, error) { + host, port, err := net.SplitHostPort(address) + if err != nil { + return "", 0, err + } + portnum, err := strconv.Atoi(port) + if err != nil { + return "", 0, err + } + if 1 > portnum || portnum > 0xffff { + return "", 0, errors.New("port number out of range " + port) + } + return host, portnum, nil +} diff --git a/vendor/golang.org/x/net/internal/socks/socks.go b/vendor/golang.org/x/net/internal/socks/socks.go new file mode 100644 index 0000000..6929a9f --- /dev/null +++ b/vendor/golang.org/x/net/internal/socks/socks.go @@ -0,0 +1,317 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package socks provides a SOCKS version 5 client implementation. +// +// SOCKS protocol version 5 is defined in RFC 1928. +// Username/Password authentication for SOCKS version 5 is defined in +// RFC 1929. +package socks + +import ( + "context" + "errors" + "io" + "net" + "strconv" +) + +// A Command represents a SOCKS command. +type Command int + +func (cmd Command) String() string { + switch cmd { + case CmdConnect: + return "socks connect" + case cmdBind: + return "socks bind" + default: + return "socks " + strconv.Itoa(int(cmd)) + } +} + +// An AuthMethod represents a SOCKS authentication method. +type AuthMethod int + +// A Reply represents a SOCKS command reply code. +type Reply int + +func (code Reply) String() string { + switch code { + case StatusSucceeded: + return "succeeded" + case 0x01: + return "general SOCKS server failure" + case 0x02: + return "connection not allowed by ruleset" + case 0x03: + return "network unreachable" + case 0x04: + return "host unreachable" + case 0x05: + return "connection refused" + case 0x06: + return "TTL expired" + case 0x07: + return "command not supported" + case 0x08: + return "address type not supported" + default: + return "unknown code: " + strconv.Itoa(int(code)) + } +} + +// Wire protocol constants. +const ( + Version5 = 0x05 + + AddrTypeIPv4 = 0x01 + AddrTypeFQDN = 0x03 + AddrTypeIPv6 = 0x04 + + CmdConnect Command = 0x01 // establishes an active-open forward proxy connection + cmdBind Command = 0x02 // establishes a passive-open forward proxy connection + + AuthMethodNotRequired AuthMethod = 0x00 // no authentication required + AuthMethodUsernamePassword AuthMethod = 0x02 // use username/password + AuthMethodNoAcceptableMethods AuthMethod = 0xff // no acceptable authentication methods + + StatusSucceeded Reply = 0x00 +) + +// An Addr represents a SOCKS-specific address. +// Either Name or IP is used exclusively. +type Addr struct { + Name string // fully-qualified domain name + IP net.IP + Port int +} + +func (a *Addr) Network() string { return "socks" } + +func (a *Addr) String() string { + if a == nil { + return "" + } + port := strconv.Itoa(a.Port) + if a.IP == nil { + return net.JoinHostPort(a.Name, port) + } + return net.JoinHostPort(a.IP.String(), port) +} + +// A Conn represents a forward proxy connection. +type Conn struct { + net.Conn + + boundAddr net.Addr +} + +// BoundAddr returns the address assigned by the proxy server for +// connecting to the command target address from the proxy server. +func (c *Conn) BoundAddr() net.Addr { + if c == nil { + return nil + } + return c.boundAddr +} + +// A Dialer holds SOCKS-specific options. +type Dialer struct { + cmd Command // either CmdConnect or cmdBind + proxyNetwork string // network between a proxy server and a client + proxyAddress string // proxy server address + + // ProxyDial specifies the optional dial function for + // establishing the transport connection. + ProxyDial func(context.Context, string, string) (net.Conn, error) + + // AuthMethods specifies the list of request authention + // methods. + // If empty, SOCKS client requests only AuthMethodNotRequired. + AuthMethods []AuthMethod + + // Authenticate specifies the optional authentication + // function. It must be non-nil when AuthMethods is not empty. + // It must return an error when the authentication is failed. + Authenticate func(context.Context, io.ReadWriter, AuthMethod) error +} + +// DialContext connects to the provided address on the provided +// network. +// +// The returned error value may be a net.OpError. When the Op field of +// net.OpError contains "socks", the Source field contains a proxy +// server address and the Addr field contains a command target +// address. +// +// See func Dial of the net package of standard library for a +// description of the network and address parameters. +func (d *Dialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) { + if err := d.validateTarget(network, address); err != nil { + proxy, dst, _ := d.pathAddrs(address) + return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err} + } + if ctx == nil { + proxy, dst, _ := d.pathAddrs(address) + return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: errors.New("nil context")} + } + var err error + var c net.Conn + if d.ProxyDial != nil { + c, err = d.ProxyDial(ctx, d.proxyNetwork, d.proxyAddress) + } else { + var dd net.Dialer + c, err = dd.DialContext(ctx, d.proxyNetwork, d.proxyAddress) + } + if err != nil { + proxy, dst, _ := d.pathAddrs(address) + return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err} + } + a, err := d.connect(ctx, c, address) + if err != nil { + c.Close() + proxy, dst, _ := d.pathAddrs(address) + return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err} + } + return &Conn{Conn: c, boundAddr: a}, nil +} + +// DialWithConn initiates a connection from SOCKS server to the target +// network and address using the connection c that is already +// connected to the SOCKS server. +// +// It returns the connection's local address assigned by the SOCKS +// server. +func (d *Dialer) DialWithConn(ctx context.Context, c net.Conn, network, address string) (net.Addr, error) { + if err := d.validateTarget(network, address); err != nil { + proxy, dst, _ := d.pathAddrs(address) + return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err} + } + if ctx == nil { + proxy, dst, _ := d.pathAddrs(address) + return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: errors.New("nil context")} + } + a, err := d.connect(ctx, c, address) + if err != nil { + proxy, dst, _ := d.pathAddrs(address) + return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err} + } + return a, nil +} + +// Dial connects to the provided address on the provided network. +// +// Unlike DialContext, it returns a raw transport connection instead +// of a forward proxy connection. +// +// Deprecated: Use DialContext or DialWithConn instead. +func (d *Dialer) Dial(network, address string) (net.Conn, error) { + if err := d.validateTarget(network, address); err != nil { + proxy, dst, _ := d.pathAddrs(address) + return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err} + } + var err error + var c net.Conn + if d.ProxyDial != nil { + c, err = d.ProxyDial(context.Background(), d.proxyNetwork, d.proxyAddress) + } else { + c, err = net.Dial(d.proxyNetwork, d.proxyAddress) + } + if err != nil { + proxy, dst, _ := d.pathAddrs(address) + return nil, &net.OpError{Op: d.cmd.String(), Net: network, Source: proxy, Addr: dst, Err: err} + } + if _, err := d.DialWithConn(context.Background(), c, network, address); err != nil { + c.Close() + return nil, err + } + return c, nil +} + +func (d *Dialer) validateTarget(network, address string) error { + switch network { + case "tcp", "tcp6", "tcp4": + default: + return errors.New("network not implemented") + } + switch d.cmd { + case CmdConnect, cmdBind: + default: + return errors.New("command not implemented") + } + return nil +} + +func (d *Dialer) pathAddrs(address string) (proxy, dst net.Addr, err error) { + for i, s := range []string{d.proxyAddress, address} { + host, port, err := splitHostPort(s) + if err != nil { + return nil, nil, err + } + a := &Addr{Port: port} + a.IP = net.ParseIP(host) + if a.IP == nil { + a.Name = host + } + if i == 0 { + proxy = a + } else { + dst = a + } + } + return +} + +// NewDialer returns a new Dialer that dials through the provided +// proxy server's network and address. +func NewDialer(network, address string) *Dialer { + return &Dialer{proxyNetwork: network, proxyAddress: address, cmd: CmdConnect} +} + +const ( + authUsernamePasswordVersion = 0x01 + authStatusSucceeded = 0x00 +) + +// UsernamePassword are the credentials for the username/password +// authentication method. +type UsernamePassword struct { + Username string + Password string +} + +// Authenticate authenticates a pair of username and password with the +// proxy server. +func (up *UsernamePassword) Authenticate(ctx context.Context, rw io.ReadWriter, auth AuthMethod) error { + switch auth { + case AuthMethodNotRequired: + return nil + case AuthMethodUsernamePassword: + if len(up.Username) == 0 || len(up.Username) > 255 || len(up.Password) == 0 || len(up.Password) > 255 { + return errors.New("invalid username/password") + } + b := []byte{authUsernamePasswordVersion} + b = append(b, byte(len(up.Username))) + b = append(b, up.Username...) + b = append(b, byte(len(up.Password))) + b = append(b, up.Password...) + // TODO(mikio): handle IO deadlines and cancelation if + // necessary + if _, err := rw.Write(b); err != nil { + return err + } + if _, err := io.ReadFull(rw, b[:2]); err != nil { + return err + } + if b[0] != authUsernamePasswordVersion { + return errors.New("invalid username/password version") + } + if b[1] != authStatusSucceeded { + return errors.New("username/password authentication failed") + } + return nil + } + return errors.New("unsupported authentication method " + strconv.Itoa(int(auth))) +} diff --git a/vendor/golang.org/x/net/proxy/dial.go b/vendor/golang.org/x/net/proxy/dial.go new file mode 100644 index 0000000..811c2e4 --- /dev/null +++ b/vendor/golang.org/x/net/proxy/dial.go @@ -0,0 +1,54 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package proxy + +import ( + "context" + "net" +) + +// A ContextDialer dials using a context. +type ContextDialer interface { + DialContext(ctx context.Context, network, address string) (net.Conn, error) +} + +// Dial works like DialContext on net.Dialer but using a dialer returned by FromEnvironment. +// +// The passed ctx is only used for returning the Conn, not the lifetime of the Conn. +// +// Custom dialers (registered via RegisterDialerType) that do not implement ContextDialer +// can leak a goroutine for as long as it takes the underlying Dialer implementation to timeout. +// +// A Conn returned from a successful Dial after the context has been cancelled will be immediately closed. +func Dial(ctx context.Context, network, address string) (net.Conn, error) { + d := FromEnvironment() + if xd, ok := d.(ContextDialer); ok { + return xd.DialContext(ctx, network, address) + } + return dialContext(ctx, d, network, address) +} + +// WARNING: this can leak a goroutine for as long as the underlying Dialer implementation takes to timeout +// A Conn returned from a successful Dial after the context has been cancelled will be immediately closed. +func dialContext(ctx context.Context, d Dialer, network, address string) (net.Conn, error) { + var ( + conn net.Conn + done = make(chan struct{}, 1) + err error + ) + go func() { + conn, err = d.Dial(network, address) + close(done) + if conn != nil && ctx.Err() != nil { + conn.Close() + } + }() + select { + case <-ctx.Done(): + err = ctx.Err() + case <-done: + } + return conn, err +} diff --git a/vendor/golang.org/x/net/proxy/direct.go b/vendor/golang.org/x/net/proxy/direct.go new file mode 100644 index 0000000..3d66bde --- /dev/null +++ b/vendor/golang.org/x/net/proxy/direct.go @@ -0,0 +1,31 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package proxy + +import ( + "context" + "net" +) + +type direct struct{} + +// Direct implements Dialer by making network connections directly using net.Dial or net.DialContext. +var Direct = direct{} + +var ( + _ Dialer = Direct + _ ContextDialer = Direct +) + +// Dial directly invokes net.Dial with the supplied parameters. +func (direct) Dial(network, addr string) (net.Conn, error) { + return net.Dial(network, addr) +} + +// DialContext instantiates a net.Dialer and invokes its DialContext receiver with the supplied parameters. +func (direct) DialContext(ctx context.Context, network, addr string) (net.Conn, error) { + var d net.Dialer + return d.DialContext(ctx, network, addr) +} diff --git a/vendor/golang.org/x/net/proxy/per_host.go b/vendor/golang.org/x/net/proxy/per_host.go new file mode 100644 index 0000000..573fe79 --- /dev/null +++ b/vendor/golang.org/x/net/proxy/per_host.go @@ -0,0 +1,155 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package proxy + +import ( + "context" + "net" + "strings" +) + +// A PerHost directs connections to a default Dialer unless the host name +// requested matches one of a number of exceptions. +type PerHost struct { + def, bypass Dialer + + bypassNetworks []*net.IPNet + bypassIPs []net.IP + bypassZones []string + bypassHosts []string +} + +// NewPerHost returns a PerHost Dialer that directs connections to either +// defaultDialer or bypass, depending on whether the connection matches one of +// the configured rules. +func NewPerHost(defaultDialer, bypass Dialer) *PerHost { + return &PerHost{ + def: defaultDialer, + bypass: bypass, + } +} + +// Dial connects to the address addr on the given network through either +// defaultDialer or bypass. +func (p *PerHost) Dial(network, addr string) (c net.Conn, err error) { + host, _, err := net.SplitHostPort(addr) + if err != nil { + return nil, err + } + + return p.dialerForRequest(host).Dial(network, addr) +} + +// DialContext connects to the address addr on the given network through either +// defaultDialer or bypass. +func (p *PerHost) DialContext(ctx context.Context, network, addr string) (c net.Conn, err error) { + host, _, err := net.SplitHostPort(addr) + if err != nil { + return nil, err + } + d := p.dialerForRequest(host) + if x, ok := d.(ContextDialer); ok { + return x.DialContext(ctx, network, addr) + } + return dialContext(ctx, d, network, addr) +} + +func (p *PerHost) dialerForRequest(host string) Dialer { + if ip := net.ParseIP(host); ip != nil { + for _, net := range p.bypassNetworks { + if net.Contains(ip) { + return p.bypass + } + } + for _, bypassIP := range p.bypassIPs { + if bypassIP.Equal(ip) { + return p.bypass + } + } + return p.def + } + + for _, zone := range p.bypassZones { + if strings.HasSuffix(host, zone) { + return p.bypass + } + if host == zone[1:] { + // For a zone ".example.com", we match "example.com" + // too. + return p.bypass + } + } + for _, bypassHost := range p.bypassHosts { + if bypassHost == host { + return p.bypass + } + } + return p.def +} + +// AddFromString parses a string that contains comma-separated values +// specifying hosts that should use the bypass proxy. Each value is either an +// IP address, a CIDR range, a zone (*.example.com) or a host name +// (localhost). A best effort is made to parse the string and errors are +// ignored. +func (p *PerHost) AddFromString(s string) { + hosts := strings.Split(s, ",") + for _, host := range hosts { + host = strings.TrimSpace(host) + if len(host) == 0 { + continue + } + if strings.Contains(host, "/") { + // We assume that it's a CIDR address like 127.0.0.0/8 + if _, net, err := net.ParseCIDR(host); err == nil { + p.AddNetwork(net) + } + continue + } + if ip := net.ParseIP(host); ip != nil { + p.AddIP(ip) + continue + } + if strings.HasPrefix(host, "*.") { + p.AddZone(host[1:]) + continue + } + p.AddHost(host) + } +} + +// AddIP specifies an IP address that will use the bypass proxy. Note that +// this will only take effect if a literal IP address is dialed. A connection +// to a named host will never match an IP. +func (p *PerHost) AddIP(ip net.IP) { + p.bypassIPs = append(p.bypassIPs, ip) +} + +// AddNetwork specifies an IP range that will use the bypass proxy. Note that +// this will only take effect if a literal IP address is dialed. A connection +// to a named host will never match. +func (p *PerHost) AddNetwork(net *net.IPNet) { + p.bypassNetworks = append(p.bypassNetworks, net) +} + +// AddZone specifies a DNS suffix that will use the bypass proxy. A zone of +// "example.com" matches "example.com" and all of its subdomains. +func (p *PerHost) AddZone(zone string) { + if strings.HasSuffix(zone, ".") { + zone = zone[:len(zone)-1] + } + if !strings.HasPrefix(zone, ".") { + zone = "." + zone + } + p.bypassZones = append(p.bypassZones, zone) +} + +// AddHost specifies a host name that will use the bypass proxy. +func (p *PerHost) AddHost(host string) { + if strings.HasSuffix(host, ".") { + host = host[:len(host)-1] + } + p.bypassHosts = append(p.bypassHosts, host) +} diff --git a/vendor/golang.org/x/net/proxy/proxy.go b/vendor/golang.org/x/net/proxy/proxy.go new file mode 100644 index 0000000..9ff4b9a --- /dev/null +++ b/vendor/golang.org/x/net/proxy/proxy.go @@ -0,0 +1,149 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package proxy provides support for a variety of protocols to proxy network +// data. +package proxy // import "golang.org/x/net/proxy" + +import ( + "errors" + "net" + "net/url" + "os" + "sync" +) + +// A Dialer is a means to establish a connection. +// Custom dialers should also implement ContextDialer. +type Dialer interface { + // Dial connects to the given address via the proxy. + Dial(network, addr string) (c net.Conn, err error) +} + +// Auth contains authentication parameters that specific Dialers may require. +type Auth struct { + User, Password string +} + +// FromEnvironment returns the dialer specified by the proxy-related +// variables in the environment and makes underlying connections +// directly. +func FromEnvironment() Dialer { + return FromEnvironmentUsing(Direct) +} + +// FromEnvironmentUsing returns the dialer specify by the proxy-related +// variables in the environment and makes underlying connections +// using the provided forwarding Dialer (for instance, a *net.Dialer +// with desired configuration). +func FromEnvironmentUsing(forward Dialer) Dialer { + allProxy := allProxyEnv.Get() + if len(allProxy) == 0 { + return forward + } + + proxyURL, err := url.Parse(allProxy) + if err != nil { + return forward + } + proxy, err := FromURL(proxyURL, forward) + if err != nil { + return forward + } + + noProxy := noProxyEnv.Get() + if len(noProxy) == 0 { + return proxy + } + + perHost := NewPerHost(proxy, forward) + perHost.AddFromString(noProxy) + return perHost +} + +// proxySchemes is a map from URL schemes to a function that creates a Dialer +// from a URL with such a scheme. +var proxySchemes map[string]func(*url.URL, Dialer) (Dialer, error) + +// RegisterDialerType takes a URL scheme and a function to generate Dialers from +// a URL with that scheme and a forwarding Dialer. Registered schemes are used +// by FromURL. +func RegisterDialerType(scheme string, f func(*url.URL, Dialer) (Dialer, error)) { + if proxySchemes == nil { + proxySchemes = make(map[string]func(*url.URL, Dialer) (Dialer, error)) + } + proxySchemes[scheme] = f +} + +// FromURL returns a Dialer given a URL specification and an underlying +// Dialer for it to make network requests. +func FromURL(u *url.URL, forward Dialer) (Dialer, error) { + var auth *Auth + if u.User != nil { + auth = new(Auth) + auth.User = u.User.Username() + if p, ok := u.User.Password(); ok { + auth.Password = p + } + } + + switch u.Scheme { + case "socks5", "socks5h": + addr := u.Hostname() + port := u.Port() + if port == "" { + port = "1080" + } + return SOCKS5("tcp", net.JoinHostPort(addr, port), auth, forward) + } + + // If the scheme doesn't match any of the built-in schemes, see if it + // was registered by another package. + if proxySchemes != nil { + if f, ok := proxySchemes[u.Scheme]; ok { + return f(u, forward) + } + } + + return nil, errors.New("proxy: unknown scheme: " + u.Scheme) +} + +var ( + allProxyEnv = &envOnce{ + names: []string{"ALL_PROXY", "all_proxy"}, + } + noProxyEnv = &envOnce{ + names: []string{"NO_PROXY", "no_proxy"}, + } +) + +// envOnce looks up an environment variable (optionally by multiple +// names) once. It mitigates expensive lookups on some platforms +// (e.g. Windows). +// (Borrowed from net/http/transport.go) +type envOnce struct { + names []string + once sync.Once + val string +} + +func (e *envOnce) Get() string { + e.once.Do(e.init) + return e.val +} + +func (e *envOnce) init() { + for _, n := range e.names { + e.val = os.Getenv(n) + if e.val != "" { + return + } + } +} + +// reset is used by tests +func (e *envOnce) reset() { + e.once = sync.Once{} + e.val = "" +} diff --git a/vendor/golang.org/x/net/proxy/socks5.go b/vendor/golang.org/x/net/proxy/socks5.go new file mode 100644 index 0000000..c91651f --- /dev/null +++ b/vendor/golang.org/x/net/proxy/socks5.go @@ -0,0 +1,42 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package proxy + +import ( + "context" + "net" + + "golang.org/x/net/internal/socks" +) + +// SOCKS5 returns a Dialer that makes SOCKSv5 connections to the given +// address with an optional username and password. +// See RFC 1928 and RFC 1929. +func SOCKS5(network, address string, auth *Auth, forward Dialer) (Dialer, error) { + d := socks.NewDialer(network, address) + if forward != nil { + if f, ok := forward.(ContextDialer); ok { + d.ProxyDial = func(ctx context.Context, network string, address string) (net.Conn, error) { + return f.DialContext(ctx, network, address) + } + } else { + d.ProxyDial = func(ctx context.Context, network string, address string) (net.Conn, error) { + return dialContext(ctx, forward, network, address) + } + } + } + if auth != nil { + up := socks.UsernamePassword{ + Username: auth.User, + Password: auth.Password, + } + d.AuthMethods = []socks.AuthMethod{ + socks.AuthMethodNotRequired, + socks.AuthMethodUsernamePassword, + } + d.Authenticate = up.Authenticate + } + return d, nil +} diff --git a/vendor/golang.org/x/sys/cpu/asm_aix_ppc64.s b/vendor/golang.org/x/sys/cpu/asm_aix_ppc64.s new file mode 100644 index 0000000..06f84b8 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/asm_aix_ppc64.s @@ -0,0 +1,17 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build !gccgo + +#include "textflag.h" + +// +// System calls for ppc64, AIX are implemented in runtime/syscall_aix.go +// + +TEXT ·syscall6(SB),NOSPLIT,$0-88 + JMP syscall·syscall6(SB) + +TEXT ·rawSyscall6(SB),NOSPLIT,$0-88 + JMP syscall·rawSyscall6(SB) diff --git a/vendor/golang.org/x/sys/cpu/byteorder.go b/vendor/golang.org/x/sys/cpu/byteorder.go new file mode 100644 index 0000000..da6b9e4 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/byteorder.go @@ -0,0 +1,30 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package cpu + +import ( + "encoding/binary" + "runtime" +) + +// hostByteOrder returns binary.LittleEndian on little-endian machines and +// binary.BigEndian on big-endian machines. +func hostByteOrder() binary.ByteOrder { + switch runtime.GOARCH { + case "386", "amd64", "amd64p32", + "arm", "arm64", + "mipsle", "mips64le", "mips64p32le", + "ppc64le", + "riscv", "riscv64": + return binary.LittleEndian + case "armbe", "arm64be", + "mips", "mips64", "mips64p32", + "ppc", "ppc64", + "s390", "s390x", + "sparc", "sparc64": + return binary.BigEndian + } + panic("unknown architecture") +} diff --git a/vendor/golang.org/x/sys/cpu/cpu.go b/vendor/golang.org/x/sys/cpu/cpu.go new file mode 100644 index 0000000..679e78c --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu.go @@ -0,0 +1,126 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package cpu implements processor feature detection for +// various CPU architectures. +package cpu + +// Initialized reports whether the CPU features were initialized. +// +// For some GOOS/GOARCH combinations initialization of the CPU features depends +// on reading an operating specific file, e.g. /proc/self/auxv on linux/arm +// Initialized will report false if reading the file fails. +var Initialized bool + +// CacheLinePad is used to pad structs to avoid false sharing. +type CacheLinePad struct{ _ [cacheLineSize]byte } + +// X86 contains the supported CPU features of the +// current X86/AMD64 platform. If the current platform +// is not X86/AMD64 then all feature flags are false. +// +// X86 is padded to avoid false sharing. Further the HasAVX +// and HasAVX2 are only set if the OS supports XMM and YMM +// registers in addition to the CPUID feature bit being set. +var X86 struct { + _ CacheLinePad + HasAES bool // AES hardware implementation (AES NI) + HasADX bool // Multi-precision add-carry instruction extensions + HasAVX bool // Advanced vector extension + HasAVX2 bool // Advanced vector extension 2 + HasBMI1 bool // Bit manipulation instruction set 1 + HasBMI2 bool // Bit manipulation instruction set 2 + HasERMS bool // Enhanced REP for MOVSB and STOSB + HasFMA bool // Fused-multiply-add instructions + HasOSXSAVE bool // OS supports XSAVE/XRESTOR for saving/restoring XMM registers. + HasPCLMULQDQ bool // PCLMULQDQ instruction - most often used for AES-GCM + HasPOPCNT bool // Hamming weight instruction POPCNT. + HasRDRAND bool // RDRAND instruction (on-chip random number generator) + HasRDSEED bool // RDSEED instruction (on-chip random number generator) + HasSSE2 bool // Streaming SIMD extension 2 (always available on amd64) + HasSSE3 bool // Streaming SIMD extension 3 + HasSSSE3 bool // Supplemental streaming SIMD extension 3 + HasSSE41 bool // Streaming SIMD extension 4 and 4.1 + HasSSE42 bool // Streaming SIMD extension 4 and 4.2 + _ CacheLinePad +} + +// ARM64 contains the supported CPU features of the +// current ARMv8(aarch64) platform. If the current platform +// is not arm64 then all feature flags are false. +var ARM64 struct { + _ CacheLinePad + HasFP bool // Floating-point instruction set (always available) + HasASIMD bool // Advanced SIMD (always available) + HasEVTSTRM bool // Event stream support + HasAES bool // AES hardware implementation + HasPMULL bool // Polynomial multiplication instruction set + HasSHA1 bool // SHA1 hardware implementation + HasSHA2 bool // SHA2 hardware implementation + HasCRC32 bool // CRC32 hardware implementation + HasATOMICS bool // Atomic memory operation instruction set + HasFPHP bool // Half precision floating-point instruction set + HasASIMDHP bool // Advanced SIMD half precision instruction set + HasCPUID bool // CPUID identification scheme registers + HasASIMDRDM bool // Rounding double multiply add/subtract instruction set + HasJSCVT bool // Javascript conversion from floating-point to integer + HasFCMA bool // Floating-point multiplication and addition of complex numbers + HasLRCPC bool // Release Consistent processor consistent support + HasDCPOP bool // Persistent memory support + HasSHA3 bool // SHA3 hardware implementation + HasSM3 bool // SM3 hardware implementation + HasSM4 bool // SM4 hardware implementation + HasASIMDDP bool // Advanced SIMD double precision instruction set + HasSHA512 bool // SHA512 hardware implementation + HasSVE bool // Scalable Vector Extensions + HasASIMDFHM bool // Advanced SIMD multiplication FP16 to FP32 + _ CacheLinePad +} + +// PPC64 contains the supported CPU features of the current ppc64/ppc64le platforms. +// If the current platform is not ppc64/ppc64le then all feature flags are false. +// +// For ppc64/ppc64le, it is safe to check only for ISA level starting on ISA v3.00, +// since there are no optional categories. There are some exceptions that also +// require kernel support to work (DARN, SCV), so there are feature bits for +// those as well. The minimum processor requirement is POWER8 (ISA 2.07). +// The struct is padded to avoid false sharing. +var PPC64 struct { + _ CacheLinePad + HasDARN bool // Hardware random number generator (requires kernel enablement) + HasSCV bool // Syscall vectored (requires kernel enablement) + IsPOWER8 bool // ISA v2.07 (POWER8) + IsPOWER9 bool // ISA v3.00 (POWER9) + _ CacheLinePad +} + +// S390X contains the supported CPU features of the current IBM Z +// (s390x) platform. If the current platform is not IBM Z then all +// feature flags are false. +// +// S390X is padded to avoid false sharing. Further HasVX is only set +// if the OS supports vector registers in addition to the STFLE +// feature bit being set. +var S390X struct { + _ CacheLinePad + HasZARCH bool // z/Architecture mode is active [mandatory] + HasSTFLE bool // store facility list extended + HasLDISP bool // long (20-bit) displacements + HasEIMM bool // 32-bit immediates + HasDFP bool // decimal floating point + HasETF3EH bool // ETF-3 enhanced + HasMSA bool // message security assist (CPACF) + HasAES bool // KM-AES{128,192,256} functions + HasAESCBC bool // KMC-AES{128,192,256} functions + HasAESCTR bool // KMCTR-AES{128,192,256} functions + HasAESGCM bool // KMA-GCM-AES{128,192,256} functions + HasGHASH bool // KIMD-GHASH function + HasSHA1 bool // K{I,L}MD-SHA-1 functions + HasSHA256 bool // K{I,L}MD-SHA-256 functions + HasSHA512 bool // K{I,L}MD-SHA-512 functions + HasSHA3 bool // K{I,L}MD-SHA3-{224,256,384,512} and K{I,L}MD-SHAKE-{128,256} functions + HasVX bool // vector facility + HasVXE bool // vector-enhancements facility 1 + _ CacheLinePad +} diff --git a/vendor/golang.org/x/sys/cpu/cpu_aix_ppc64.go b/vendor/golang.org/x/sys/cpu/cpu_aix_ppc64.go new file mode 100644 index 0000000..be60272 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_aix_ppc64.go @@ -0,0 +1,34 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build aix,ppc64 + +package cpu + +const cacheLineSize = 128 + +const ( + // getsystemcfg constants + _SC_IMPL = 2 + _IMPL_POWER8 = 0x10000 + _IMPL_POWER9 = 0x20000 +) + +func init() { + impl := getsystemcfg(_SC_IMPL) + if impl&_IMPL_POWER8 != 0 { + PPC64.IsPOWER8 = true + } + if impl&_IMPL_POWER9 != 0 { + PPC64.IsPOWER9 = true + } + + Initialized = true +} + +func getsystemcfg(label int) (n uint64) { + r0, _ := callgetsystemcfg(label) + n = uint64(r0) + return +} diff --git a/vendor/golang.org/x/sys/cpu/cpu_arm.go b/vendor/golang.org/x/sys/cpu/cpu_arm.go new file mode 100644 index 0000000..7f2348b --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_arm.go @@ -0,0 +1,9 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package cpu + +const cacheLineSize = 32 + +func doinit() {} diff --git a/vendor/golang.org/x/sys/cpu/cpu_gc_s390x.go b/vendor/golang.org/x/sys/cpu/cpu_gc_s390x.go new file mode 100644 index 0000000..568bcd0 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_gc_s390x.go @@ -0,0 +1,21 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build !gccgo + +package cpu + +// haveAsmFunctions reports whether the other functions in this file can +// be safely called. +func haveAsmFunctions() bool { return true } + +// The following feature detection functions are defined in cpu_s390x.s. +// They are likely to be expensive to call so the results should be cached. +func stfle() facilityList +func kmQuery() queryResult +func kmcQuery() queryResult +func kmctrQuery() queryResult +func kmaQuery() queryResult +func kimdQuery() queryResult +func klmdQuery() queryResult diff --git a/vendor/golang.org/x/sys/cpu/cpu_gc_x86.go b/vendor/golang.org/x/sys/cpu/cpu_gc_x86.go new file mode 100644 index 0000000..f7cb469 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_gc_x86.go @@ -0,0 +1,16 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build 386 amd64 amd64p32 +// +build !gccgo + +package cpu + +// cpuid is implemented in cpu_x86.s for gc compiler +// and in cpu_gccgo.c for gccgo. +func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32) + +// xgetbv with ecx = 0 is implemented in cpu_x86.s for gc compiler +// and in cpu_gccgo.c for gccgo. +func xgetbv() (eax, edx uint32) diff --git a/vendor/golang.org/x/sys/cpu/cpu_gccgo.c b/vendor/golang.org/x/sys/cpu/cpu_gccgo.c new file mode 100644 index 0000000..e363c7d --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_gccgo.c @@ -0,0 +1,43 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build 386 amd64 amd64p32 +// +build gccgo + +#include +#include + +// Need to wrap __get_cpuid_count because it's declared as static. +int +gccgoGetCpuidCount(uint32_t leaf, uint32_t subleaf, + uint32_t *eax, uint32_t *ebx, + uint32_t *ecx, uint32_t *edx) +{ + return __get_cpuid_count(leaf, subleaf, eax, ebx, ecx, edx); +} + +// xgetbv reads the contents of an XCR (Extended Control Register) +// specified in the ECX register into registers EDX:EAX. +// Currently, the only supported value for XCR is 0. +// +// TODO: Replace with a better alternative: +// +// #include +// +// #pragma GCC target("xsave") +// +// void gccgoXgetbv(uint32_t *eax, uint32_t *edx) { +// unsigned long long x = _xgetbv(0); +// *eax = x & 0xffffffff; +// *edx = (x >> 32) & 0xffffffff; +// } +// +// Note that _xgetbv is defined starting with GCC 8. +void +gccgoXgetbv(uint32_t *eax, uint32_t *edx) +{ + __asm(" xorl %%ecx, %%ecx\n" + " xgetbv" + : "=a"(*eax), "=d"(*edx)); +} diff --git a/vendor/golang.org/x/sys/cpu/cpu_gccgo.go b/vendor/golang.org/x/sys/cpu/cpu_gccgo.go new file mode 100644 index 0000000..ba49b91 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_gccgo.go @@ -0,0 +1,26 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build 386 amd64 amd64p32 +// +build gccgo + +package cpu + +//extern gccgoGetCpuidCount +func gccgoGetCpuidCount(eaxArg, ecxArg uint32, eax, ebx, ecx, edx *uint32) + +func cpuid(eaxArg, ecxArg uint32) (eax, ebx, ecx, edx uint32) { + var a, b, c, d uint32 + gccgoGetCpuidCount(eaxArg, ecxArg, &a, &b, &c, &d) + return a, b, c, d +} + +//extern gccgoXgetbv +func gccgoXgetbv(eax, edx *uint32) + +func xgetbv() (eax, edx uint32) { + var a, d uint32 + gccgoXgetbv(&a, &d) + return a, d +} diff --git a/vendor/golang.org/x/sys/cpu/cpu_gccgo_s390x.go b/vendor/golang.org/x/sys/cpu/cpu_gccgo_s390x.go new file mode 100644 index 0000000..aa986f7 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_gccgo_s390x.go @@ -0,0 +1,22 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build gccgo + +package cpu + +// haveAsmFunctions reports whether the other functions in this file can +// be safely called. +func haveAsmFunctions() bool { return false } + +// TODO(mundaym): the following feature detection functions are currently +// stubs. See https://golang.org/cl/162887 for how to fix this. +// They are likely to be expensive to call so the results should be cached. +func stfle() facilityList { panic("not implemented for gccgo") } +func kmQuery() queryResult { panic("not implemented for gccgo") } +func kmcQuery() queryResult { panic("not implemented for gccgo") } +func kmctrQuery() queryResult { panic("not implemented for gccgo") } +func kmaQuery() queryResult { panic("not implemented for gccgo") } +func kimdQuery() queryResult { panic("not implemented for gccgo") } +func klmdQuery() queryResult { panic("not implemented for gccgo") } diff --git a/vendor/golang.org/x/sys/cpu/cpu_linux.go b/vendor/golang.org/x/sys/cpu/cpu_linux.go new file mode 100644 index 0000000..76b5f50 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_linux.go @@ -0,0 +1,59 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//+build !amd64,!amd64p32,!386 + +package cpu + +import ( + "io/ioutil" +) + +const ( + _AT_HWCAP = 16 + _AT_HWCAP2 = 26 + + procAuxv = "/proc/self/auxv" + + uintSize = int(32 << (^uint(0) >> 63)) +) + +// For those platforms don't have a 'cpuid' equivalent we use HWCAP/HWCAP2 +// These are initialized in cpu_$GOARCH.go +// and should not be changed after they are initialized. +var hwCap uint +var hwCap2 uint + +func init() { + buf, err := ioutil.ReadFile(procAuxv) + if err != nil { + // e.g. on android /proc/self/auxv is not accessible, so silently + // ignore the error and leave Initialized = false + return + } + + bo := hostByteOrder() + for len(buf) >= 2*(uintSize/8) { + var tag, val uint + switch uintSize { + case 32: + tag = uint(bo.Uint32(buf[0:])) + val = uint(bo.Uint32(buf[4:])) + buf = buf[8:] + case 64: + tag = uint(bo.Uint64(buf[0:])) + val = uint(bo.Uint64(buf[8:])) + buf = buf[16:] + } + switch tag { + case _AT_HWCAP: + hwCap = val + case _AT_HWCAP2: + hwCap2 = val + } + } + doinit() + + Initialized = true +} diff --git a/vendor/golang.org/x/sys/cpu/cpu_linux_arm64.go b/vendor/golang.org/x/sys/cpu/cpu_linux_arm64.go new file mode 100644 index 0000000..fa7fb1b --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_linux_arm64.go @@ -0,0 +1,67 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package cpu + +const cacheLineSize = 64 + +// HWCAP/HWCAP2 bits. These are exposed by Linux. +const ( + hwcap_FP = 1 << 0 + hwcap_ASIMD = 1 << 1 + hwcap_EVTSTRM = 1 << 2 + hwcap_AES = 1 << 3 + hwcap_PMULL = 1 << 4 + hwcap_SHA1 = 1 << 5 + hwcap_SHA2 = 1 << 6 + hwcap_CRC32 = 1 << 7 + hwcap_ATOMICS = 1 << 8 + hwcap_FPHP = 1 << 9 + hwcap_ASIMDHP = 1 << 10 + hwcap_CPUID = 1 << 11 + hwcap_ASIMDRDM = 1 << 12 + hwcap_JSCVT = 1 << 13 + hwcap_FCMA = 1 << 14 + hwcap_LRCPC = 1 << 15 + hwcap_DCPOP = 1 << 16 + hwcap_SHA3 = 1 << 17 + hwcap_SM3 = 1 << 18 + hwcap_SM4 = 1 << 19 + hwcap_ASIMDDP = 1 << 20 + hwcap_SHA512 = 1 << 21 + hwcap_SVE = 1 << 22 + hwcap_ASIMDFHM = 1 << 23 +) + +func doinit() { + // HWCAP feature bits + ARM64.HasFP = isSet(hwCap, hwcap_FP) + ARM64.HasASIMD = isSet(hwCap, hwcap_ASIMD) + ARM64.HasEVTSTRM = isSet(hwCap, hwcap_EVTSTRM) + ARM64.HasAES = isSet(hwCap, hwcap_AES) + ARM64.HasPMULL = isSet(hwCap, hwcap_PMULL) + ARM64.HasSHA1 = isSet(hwCap, hwcap_SHA1) + ARM64.HasSHA2 = isSet(hwCap, hwcap_SHA2) + ARM64.HasCRC32 = isSet(hwCap, hwcap_CRC32) + ARM64.HasATOMICS = isSet(hwCap, hwcap_ATOMICS) + ARM64.HasFPHP = isSet(hwCap, hwcap_FPHP) + ARM64.HasASIMDHP = isSet(hwCap, hwcap_ASIMDHP) + ARM64.HasCPUID = isSet(hwCap, hwcap_CPUID) + ARM64.HasASIMDRDM = isSet(hwCap, hwcap_ASIMDRDM) + ARM64.HasJSCVT = isSet(hwCap, hwcap_JSCVT) + ARM64.HasFCMA = isSet(hwCap, hwcap_FCMA) + ARM64.HasLRCPC = isSet(hwCap, hwcap_LRCPC) + ARM64.HasDCPOP = isSet(hwCap, hwcap_DCPOP) + ARM64.HasSHA3 = isSet(hwCap, hwcap_SHA3) + ARM64.HasSM3 = isSet(hwCap, hwcap_SM3) + ARM64.HasSM4 = isSet(hwCap, hwcap_SM4) + ARM64.HasASIMDDP = isSet(hwCap, hwcap_ASIMDDP) + ARM64.HasSHA512 = isSet(hwCap, hwcap_SHA512) + ARM64.HasSVE = isSet(hwCap, hwcap_SVE) + ARM64.HasASIMDFHM = isSet(hwCap, hwcap_ASIMDFHM) +} + +func isSet(hwc uint, value uint) bool { + return hwc&value != 0 +} diff --git a/vendor/golang.org/x/sys/cpu/cpu_linux_ppc64x.go b/vendor/golang.org/x/sys/cpu/cpu_linux_ppc64x.go new file mode 100644 index 0000000..6c8d975 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_linux_ppc64x.go @@ -0,0 +1,33 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build linux +// +build ppc64 ppc64le + +package cpu + +const cacheLineSize = 128 + +// HWCAP/HWCAP2 bits. These are exposed by the kernel. +const ( + // ISA Level + _PPC_FEATURE2_ARCH_2_07 = 0x80000000 + _PPC_FEATURE2_ARCH_3_00 = 0x00800000 + + // CPU features + _PPC_FEATURE2_DARN = 0x00200000 + _PPC_FEATURE2_SCV = 0x00100000 +) + +func doinit() { + // HWCAP2 feature bits + PPC64.IsPOWER8 = isSet(hwCap2, _PPC_FEATURE2_ARCH_2_07) + PPC64.IsPOWER9 = isSet(hwCap2, _PPC_FEATURE2_ARCH_3_00) + PPC64.HasDARN = isSet(hwCap2, _PPC_FEATURE2_DARN) + PPC64.HasSCV = isSet(hwCap2, _PPC_FEATURE2_SCV) +} + +func isSet(hwc uint, value uint) bool { + return hwc&value != 0 +} diff --git a/vendor/golang.org/x/sys/cpu/cpu_linux_s390x.go b/vendor/golang.org/x/sys/cpu/cpu_linux_s390x.go new file mode 100644 index 0000000..d579eae --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_linux_s390x.go @@ -0,0 +1,161 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package cpu + +const cacheLineSize = 256 + +const ( + // bit mask values from /usr/include/bits/hwcap.h + hwcap_ZARCH = 2 + hwcap_STFLE = 4 + hwcap_MSA = 8 + hwcap_LDISP = 16 + hwcap_EIMM = 32 + hwcap_DFP = 64 + hwcap_ETF3EH = 256 + hwcap_VX = 2048 + hwcap_VXE = 8192 +) + +// bitIsSet reports whether the bit at index is set. The bit index +// is in big endian order, so bit index 0 is the leftmost bit. +func bitIsSet(bits []uint64, index uint) bool { + return bits[index/64]&((1<<63)>>(index%64)) != 0 +} + +// function is the code for the named cryptographic function. +type function uint8 + +const ( + // KM{,A,C,CTR} function codes + aes128 function = 18 // AES-128 + aes192 function = 19 // AES-192 + aes256 function = 20 // AES-256 + + // K{I,L}MD function codes + sha1 function = 1 // SHA-1 + sha256 function = 2 // SHA-256 + sha512 function = 3 // SHA-512 + sha3_224 function = 32 // SHA3-224 + sha3_256 function = 33 // SHA3-256 + sha3_384 function = 34 // SHA3-384 + sha3_512 function = 35 // SHA3-512 + shake128 function = 36 // SHAKE-128 + shake256 function = 37 // SHAKE-256 + + // KLMD function codes + ghash function = 65 // GHASH +) + +// queryResult contains the result of a Query function +// call. Bits are numbered in big endian order so the +// leftmost bit (the MSB) is at index 0. +type queryResult struct { + bits [2]uint64 +} + +// Has reports whether the given functions are present. +func (q *queryResult) Has(fns ...function) bool { + if len(fns) == 0 { + panic("no function codes provided") + } + for _, f := range fns { + if !bitIsSet(q.bits[:], uint(f)) { + return false + } + } + return true +} + +// facility is a bit index for the named facility. +type facility uint8 + +const ( + // cryptography facilities + msa4 facility = 77 // message-security-assist extension 4 + msa8 facility = 146 // message-security-assist extension 8 +) + +// facilityList contains the result of an STFLE call. +// Bits are numbered in big endian order so the +// leftmost bit (the MSB) is at index 0. +type facilityList struct { + bits [4]uint64 +} + +// Has reports whether the given facilities are present. +func (s *facilityList) Has(fs ...facility) bool { + if len(fs) == 0 { + panic("no facility bits provided") + } + for _, f := range fs { + if !bitIsSet(s.bits[:], uint(f)) { + return false + } + } + return true +} + +func doinit() { + // test HWCAP bit vector + has := func(featureMask uint) bool { + return hwCap&featureMask == featureMask + } + + // mandatory + S390X.HasZARCH = has(hwcap_ZARCH) + + // optional + S390X.HasSTFLE = has(hwcap_STFLE) + S390X.HasLDISP = has(hwcap_LDISP) + S390X.HasEIMM = has(hwcap_EIMM) + S390X.HasETF3EH = has(hwcap_ETF3EH) + S390X.HasDFP = has(hwcap_DFP) + S390X.HasMSA = has(hwcap_MSA) + S390X.HasVX = has(hwcap_VX) + if S390X.HasVX { + S390X.HasVXE = has(hwcap_VXE) + } + + // We need implementations of stfle, km and so on + // to detect cryptographic features. + if !haveAsmFunctions() { + return + } + + // optional cryptographic functions + if S390X.HasMSA { + aes := []function{aes128, aes192, aes256} + + // cipher message + km, kmc := kmQuery(), kmcQuery() + S390X.HasAES = km.Has(aes...) + S390X.HasAESCBC = kmc.Has(aes...) + if S390X.HasSTFLE { + facilities := stfle() + if facilities.Has(msa4) { + kmctr := kmctrQuery() + S390X.HasAESCTR = kmctr.Has(aes...) + } + if facilities.Has(msa8) { + kma := kmaQuery() + S390X.HasAESGCM = kma.Has(aes...) + } + } + + // compute message digest + kimd := kimdQuery() // intermediate (no padding) + klmd := klmdQuery() // last (padding) + S390X.HasSHA1 = kimd.Has(sha1) && klmd.Has(sha1) + S390X.HasSHA256 = kimd.Has(sha256) && klmd.Has(sha256) + S390X.HasSHA512 = kimd.Has(sha512) && klmd.Has(sha512) + S390X.HasGHASH = kimd.Has(ghash) // KLMD-GHASH does not exist + sha3 := []function{ + sha3_224, sha3_256, sha3_384, sha3_512, + shake128, shake256, + } + S390X.HasSHA3 = kimd.Has(sha3...) && klmd.Has(sha3...) + } +} diff --git a/vendor/golang.org/x/sys/cpu/cpu_mips64x.go b/vendor/golang.org/x/sys/cpu/cpu_mips64x.go new file mode 100644 index 0000000..f55e0c8 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_mips64x.go @@ -0,0 +1,11 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build mips64 mips64le + +package cpu + +const cacheLineSize = 32 + +func doinit() {} diff --git a/vendor/golang.org/x/sys/cpu/cpu_mipsx.go b/vendor/golang.org/x/sys/cpu/cpu_mipsx.go new file mode 100644 index 0000000..cda87b1 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_mipsx.go @@ -0,0 +1,11 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build mips mipsle + +package cpu + +const cacheLineSize = 32 + +func doinit() {} diff --git a/vendor/golang.org/x/sys/cpu/cpu_other_arm64.go b/vendor/golang.org/x/sys/cpu/cpu_other_arm64.go new file mode 100644 index 0000000..dd1e76d --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_other_arm64.go @@ -0,0 +1,11 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build !linux,arm64 + +package cpu + +const cacheLineSize = 64 + +func doinit() {} diff --git a/vendor/golang.org/x/sys/cpu/cpu_s390x.s b/vendor/golang.org/x/sys/cpu/cpu_s390x.s new file mode 100644 index 0000000..e5037d9 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_s390x.s @@ -0,0 +1,57 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build !gccgo + +#include "textflag.h" + +// func stfle() facilityList +TEXT ·stfle(SB), NOSPLIT|NOFRAME, $0-32 + MOVD $ret+0(FP), R1 + MOVD $3, R0 // last doubleword index to store + XC $32, (R1), (R1) // clear 4 doublewords (32 bytes) + WORD $0xb2b01000 // store facility list extended (STFLE) + RET + +// func kmQuery() queryResult +TEXT ·kmQuery(SB), NOSPLIT|NOFRAME, $0-16 + MOVD $0, R0 // set function code to 0 (KM-Query) + MOVD $ret+0(FP), R1 // address of 16-byte return value + WORD $0xB92E0024 // cipher message (KM) + RET + +// func kmcQuery() queryResult +TEXT ·kmcQuery(SB), NOSPLIT|NOFRAME, $0-16 + MOVD $0, R0 // set function code to 0 (KMC-Query) + MOVD $ret+0(FP), R1 // address of 16-byte return value + WORD $0xB92F0024 // cipher message with chaining (KMC) + RET + +// func kmctrQuery() queryResult +TEXT ·kmctrQuery(SB), NOSPLIT|NOFRAME, $0-16 + MOVD $0, R0 // set function code to 0 (KMCTR-Query) + MOVD $ret+0(FP), R1 // address of 16-byte return value + WORD $0xB92D4024 // cipher message with counter (KMCTR) + RET + +// func kmaQuery() queryResult +TEXT ·kmaQuery(SB), NOSPLIT|NOFRAME, $0-16 + MOVD $0, R0 // set function code to 0 (KMA-Query) + MOVD $ret+0(FP), R1 // address of 16-byte return value + WORD $0xb9296024 // cipher message with authentication (KMA) + RET + +// func kimdQuery() queryResult +TEXT ·kimdQuery(SB), NOSPLIT|NOFRAME, $0-16 + MOVD $0, R0 // set function code to 0 (KIMD-Query) + MOVD $ret+0(FP), R1 // address of 16-byte return value + WORD $0xB93E0024 // compute intermediate message digest (KIMD) + RET + +// func klmdQuery() queryResult +TEXT ·klmdQuery(SB), NOSPLIT|NOFRAME, $0-16 + MOVD $0, R0 // set function code to 0 (KLMD-Query) + MOVD $ret+0(FP), R1 // address of 16-byte return value + WORD $0xB93F0024 // compute last message digest (KLMD) + RET diff --git a/vendor/golang.org/x/sys/cpu/cpu_wasm.go b/vendor/golang.org/x/sys/cpu/cpu_wasm.go new file mode 100644 index 0000000..bd9bbda --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_wasm.go @@ -0,0 +1,15 @@ +// Copyright 2019 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build wasm + +package cpu + +// We're compiling the cpu package for an unknown (software-abstracted) CPU. +// Make CacheLinePad an empty struct and hope that the usual struct alignment +// rules are good enough. + +const cacheLineSize = 0 + +func doinit() {} diff --git a/vendor/golang.org/x/sys/cpu/cpu_x86.go b/vendor/golang.org/x/sys/cpu/cpu_x86.go new file mode 100644 index 0000000..d70d317 --- /dev/null +++ b/vendor/golang.org/x/sys/cpu/cpu_x86.go @@ -0,0 +1,59 @@ +// Copyright 2018 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// +build 386 amd64 amd64p32 + +package cpu + +const cacheLineSize = 64 + +func init() { + Initialized = true + + maxID, _, _, _ := cpuid(0, 0) + + if maxID < 1 { + return + } + + _, _, ecx1, edx1 := cpuid(1, 0) + X86.HasSSE2 = isSet(26, edx1) + + X86.HasSSE3 = isSet(0, ecx1) + X86.HasPCLMULQDQ = isSet(1, ecx1) + X86.HasSSSE3 = isSet(9, ecx1) + X86.HasFMA = isSet(12, ecx1) + X86.HasSSE41 = isSet(19, ecx1) + X86.HasSSE42 = isSet(20, ecx1) + X86.HasPOPCNT = isSet(23, ecx1) + X86.HasAES = isSet(25, ecx1) + X86.HasOSXSAVE = isSet(27, ecx1) + X86.HasRDRAND = isSet(30, ecx1) + + osSupportsAVX := false + // For XGETBV, OSXSAVE bit is required and sufficient. + if X86.HasOSXSAVE { + eax, _ := xgetbv() + // Check if XMM and YMM registers have OS support. + osSupportsAVX = isSet(1, eax) && isSet(2, eax) + } + + X86.HasAVX = isSet(28, ecx1) && osSupportsAVX + + if maxID < 7 { + return + } + + _, ebx7, _, _ := cpuid(7, 0) + X86.HasBMI1 = isSet(3, ebx7) + X86.HasAVX2 = isSet(5, ebx7) && osSupportsAVX + X86.HasBMI2 = isSet(8, ebx7) + X86.HasERMS = isSet(9, ebx7) + X86.HasRDSEED = isSet(18, ebx7) + X86.HasADX = isSet(19, ebx7) +} + +func isSet(bitpos uint, value uint32) bool { + return value&(1<