+++ /dev/null
-// GoGOST -- Pure Go GOST cryptographic functions library
-// Copyright (C) 2015-2019 Sergey Matveev <stargrave@stargrave.org>
-//
-// 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, version 3 of the License.
-//
-// 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 <http://www.gnu.org/licenses/>.
-
-package mgm
-
-import (
- "bytes"
- "crypto/cipher"
- "crypto/rand"
- "testing"
- "testing/quick"
-
- "cypherpunks.ru/gogost/gost3412128"
- "cypherpunks.ru/gogost/gost341264"
-)
-
-func TestVector(t *testing.T) {
- key := []byte{
- 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF,
- 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
- 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10,
- 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF,
- }
- additionalData := []byte{
- 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
- 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
- 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04,
- 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
- 0xEA, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05,
- 0x05,
- }
- plaintext := []byte{
- 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x00,
- 0xFF, 0xEE, 0xDD, 0xCC, 0xBB, 0xAA, 0x99, 0x88,
- 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
- 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xEE, 0xFF, 0x0A,
- 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88,
- 0x99, 0xAA, 0xBB, 0xCC, 0xEE, 0xFF, 0x0A, 0x00,
- 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99,
- 0xAA, 0xBB, 0xCC, 0xEE, 0xFF, 0x0A, 0x00, 0x11,
- 0xAA, 0xBB, 0xCC,
- }
- c := gost3412128.NewCipher(key)
- nonce := plaintext[:16]
- aead, _ := NewMGM(c, 16)
- sealed := aead.Seal(nil, nonce, plaintext, additionalData)
- if bytes.Compare(sealed[:len(plaintext)], []byte{
- 0xA9, 0x75, 0x7B, 0x81, 0x47, 0x95, 0x6E, 0x90,
- 0x55, 0xB8, 0xA3, 0x3D, 0xE8, 0x9F, 0x42, 0xFC,
- 0x80, 0x75, 0xD2, 0x21, 0x2B, 0xF9, 0xFD, 0x5B,
- 0xD3, 0xF7, 0x06, 0x9A, 0xAD, 0xC1, 0x6B, 0x39,
- 0x49, 0x7A, 0xB1, 0x59, 0x15, 0xA6, 0xBA, 0x85,
- 0x93, 0x6B, 0x5D, 0x0E, 0xA9, 0xF6, 0x85, 0x1C,
- 0xC6, 0x0C, 0x14, 0xD4, 0xD3, 0xF8, 0x83, 0xD0,
- 0xAB, 0x94, 0x42, 0x06, 0x95, 0xC7, 0x6D, 0xEB,
- 0x2C, 0x75, 0x52,
- }) != 0 {
- t.FailNow()
- }
- if bytes.Compare(sealed[len(plaintext):], []byte{
- 0xCF, 0x5D, 0x65, 0x6F, 0x40, 0xC3, 0x4F, 0x5C,
- 0x46, 0xE8, 0xBB, 0x0E, 0x29, 0xFC, 0xDB, 0x4C,
- }) != 0 {
- t.FailNow()
- }
- _, err := aead.Open(sealed[:0], nonce, sealed, additionalData)
- if err != nil {
- t.FailNow()
- }
- if bytes.Compare(sealed[:len(plaintext)], plaintext) != 0 {
- t.FailNow()
- }
-}
-
-func TestSymmetric(t *testing.T) {
- sym := func(keySize, blockSize int, c cipher.Block, nonce []byte) {
- f := func(
- plaintext, additionalData []byte,
- initials [][]byte,
- tagSize uint8,
- ) bool {
- if len(plaintext) == 0 && len(additionalData) == 0 {
- return true
- }
- tagSize = 4 + tagSize%uint8(blockSize-4)
- aead, err := NewMGM(c, int(tagSize))
- if err != nil {
- return false
- }
- for _, initial := range initials {
- sealed := aead.Seal(initial, nonce, plaintext, additionalData)
- if bytes.Compare(sealed[:len(initial)], initial) != 0 {
- return false
- }
- pt, err := aead.Open(
- sealed[:0],
- nonce,
- sealed[len(initial):],
- additionalData,
- )
- if err != nil || bytes.Compare(pt, plaintext) != 0 {
- return false
- }
- }
- return true
- }
- if err := quick.Check(f, nil); err != nil {
- t.Error(err)
- }
- }
-
- key128 := new([gost3412128.KeySize]byte)
- if _, err := rand.Read(key128[:]); err != nil {
- panic(err)
- }
- nonce := make([]byte, gost3412128.BlockSize)
- if _, err := rand.Read(key128[1:]); err != nil {
- panic(err)
- }
- sym(
- gost3412128.KeySize,
- gost3412128.BlockSize,
- gost3412128.NewCipher(key128[:]),
- nonce[:gost3412128.BlockSize],
- )
-
- key64 := new([gost341264.KeySize]byte)
- copy(key64[:], key128[:])
- sym(
- gost341264.KeySize,
- gost341264.BlockSize,
- gost341264.NewCipher(key64[:]),
- nonce[:gost341264.BlockSize],
- )
-}