Pure Go GOST cryptographic functions library.

Fork of original gogost project https://git.cypherpunks.ru/cgit.cgi/gogost.git

GOST is GOvernment STandard of Russian Federation (and Soviet Union).

Features

• GOST 28147-89 (RFC 5830) block cipher with ECB, CNT (CTR), CFB, MAC CBC (RFC 4357) modes of operation
• various 28147-89-related S-boxes included
• GOST R 34.11-94 hash function (RFC 5831)
• GOST R 34.11-2012 Стрибог (Streebog) hash function (RFC 6986)
• GOST R 34.10-2001 (RFC 5832) public key signature function
• GOST R 34.10-2012 (RFC 7091) public key signature function
• various 34.10 curve parameters included
• Coordinates conversion from twisted Edwards to Weierstrass form and vice versa
• VKO GOST R 34.10-2001 key agreement function (RFC 4357)
• VKO GOST R 34.10-2012 key agreement function (RFC 7836)
• KDF_GOSTR3411_2012_256 KDF function (RFC 7836)
• GOST R 34.12-2015 128-bit block cipher Кузнечик (Kuznechik) (RFC 7801)
• GOST R 34.12-2015 64-bit block cipher Магма (Magma)
• GOST R 34.13-2015 padding methods
• MGM AEAD mode for 64 and 128 bit ciphers
• TLSTREE keyscheduling function

Requirements

• Go 1.11 or higher.

Known problems:

• intermediate calculation values are not zeroed
• 34.10 is not time constant and slow

GoGOST is free software: see the file COPYING for copying conditions.

GoGOST'es home page is: http://gogost.cypherpunks.ru/ You can read about GOST algorithms more: project home GOST standards

Please send questions, bug reports and patches to https://lists.cypherpunks.ru/mailman/listinfo/gost mailing list. Announcements also go to this mailing list.

Development Git source code repository currently is located here: https://git.cypherpunks.ru/cgit.cgi/gogost.git/

Installation

Install:

go get -u github.com/ddulesov/gogost

Import:

import "github.com/ddulesov/gogost"

Quickstart

package main

import (
    "encoding/hex"
    "fmt"
    "github.com/ddulesov/gogost/gost34112012256"
)

func main() {
    h := gost34112012256.New()
    h.Write([]byte("hello world"))
    fmt.Println(hex.EncodeToString(h.Sum(nil)))
}