# coding: utf-8
# PyGOST -- Pure Python GOST cryptographic functions library
-# Copyright (C) 2015-2018 Sergey Matveev <stargrave@stargrave.org>
+# Copyright (C) 2015-2020 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, either version 3 of the License, or
-# (at your option) any later version.
+# 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
from unittest import TestCase
from pygost.gost28147 import block2ns
+from pygost.gost28147 import BLOCKSIZE
from pygost.gost28147 import cbc_decrypt
from pygost.gost28147 import cbc_encrypt
from pygost.gost28147 import cfb_decrypt
from pygost.gost28147 import ecb_decrypt
from pygost.gost28147 import ecb_encrypt
from pygost.gost28147 import encrypt
+from pygost.gost28147 import KEYSIZE
from pygost.gost28147 import MESH_MAX_DATA
from pygost.gost28147 import ns2block
from pygost.utils import hexdec
class ECBTest(TestCase):
def test_gcl(self):
- """ Test vectors from libgcl3
+ """Test vectors from libgcl3
"""
- sbox = "Gost2814789_TestParamSet"
+ sbox = "id-Gost28147-89-TestParamSet"
key = hexdec(b"0475f6e05038fbfad2c7c390edb3ca3d1547124291ae1e8a2f79cd9ed2bcefbd")
plaintext = bytes(bytearray((
0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00,
0x5a, 0x5f, 0xca, 0x58, 0x9a, 0xb2, 0x2d, 0xb2,
)))
encrypted = ecb_encrypt(key, plaintext, sbox=sbox)
- self.assertEqual(encrypted, ciphertext)
+ self.assertSequenceEqual(encrypted, ciphertext)
decrypted = ecb_decrypt(key, encrypted, sbox=sbox)
- self.assertEqual(decrypted, plaintext)
+ self.assertSequenceEqual(decrypted, plaintext)
def test_cryptopp(self):
- """ Test vectors from Crypto++ 5.6.2
+ """Test vectors from Crypto++ 5.6.2
"""
sbox = "AppliedCryptography"
data = (
key = hexdec(key)
pt = hexdec(pt)
ct = hexdec(ct)
- self.assertEqual(ecb_encrypt(key, pt, sbox=sbox), ct)
+ self.assertSequenceEqual(ecb_encrypt(key, pt, sbox=sbox), ct)
def test_cryptomanager(self):
- """ Test vector from http://cryptomanager.com/tv.html
+ """Test vector from http://cryptomanager.com/tv.html
"""
- sbox = "GostR3411_94_TestParamSet"
+ sbox = "id-GostR3411-94-TestParamSet"
key = hexdec(b"75713134B60FEC45A607BB83AA3746AF4FF99DA6D1B53B5B1B402A1BAA030D1B")
- self.assertEqual(
+ self.assertSequenceEqual(
ecb_encrypt(key, hexdec(b"1122334455667788"), sbox=sbox),
hexdec(b"03251E14F9D28ACB"),
)
class CFBTest(TestCase):
def test_cryptomanager(self):
- """ Test vector from http://cryptomanager.com/tv.html
+ """Test vector from http://cryptomanager.com/tv.html
"""
key = hexdec(b"75713134B60FEC45A607BB83AA3746AF4FF99DA6D1B53B5B1B402A1BAA030D1B")
- sbox = "GostR3411_94_TestParamSet"
- self.assertEqual(
+ sbox = "id-GostR3411-94-TestParamSet"
+ self.assertSequenceEqual(
cfb_encrypt(
key,
hexdec(b"112233445566778899AABBCCDD800000"),
),
hexdec(b"6EE84586DD2BCA0CAD3616940E164242"),
)
- self.assertEqual(
+ self.assertSequenceEqual(
cfb_decrypt(
key,
hexdec(b"6EE84586DD2BCA0CAD3616940E164242"),
)
def test_steps(self):
- """ Check step-by-step operation manually
+ """Check step-by-step operation manually
"""
- key = urandom(32)
- iv = urandom(8)
+ key = urandom(KEYSIZE)
+ iv = urandom(BLOCKSIZE)
plaintext = urandom(20)
ciphertext = cfb_encrypt(key, plaintext, iv)
# First full block
step = encrypt(DEFAULT_SBOX, key, block2ns(iv))
step = strxor(plaintext[:8], ns2block(step))
- self.assertEqual(step, ciphertext[:8])
+ self.assertSequenceEqual(step, ciphertext[:8])
# Second full block
step = encrypt(DEFAULT_SBOX, key, block2ns(step))
step = strxor(plaintext[8:16], ns2block(step))
- self.assertEqual(step, ciphertext[8:16])
+ self.assertSequenceEqual(step, ciphertext[8:16])
# Third non-full block
step = encrypt(DEFAULT_SBOX, key, block2ns(step))
step = strxor(plaintext[16:] + 4 * b"\x00", ns2block(step))
- self.assertEqual(step[:4], ciphertext[16:])
+ self.assertSequenceEqual(step[:4], ciphertext[16:])
def test_random(self):
- """ Random data with various sizes
+ """Random data with various sizes
"""
- key = urandom(32)
- iv = urandom(8)
+ key = urandom(KEYSIZE)
+ iv = urandom(BLOCKSIZE)
for size in (5, 8, 16, 120):
pt = urandom(size)
- self.assertEqual(
- cfb_decrypt(key, cfb_encrypt(key, pt, iv), iv), pt,
+ self.assertSequenceEqual(
+ cfb_decrypt(key, cfb_encrypt(key, pt, iv), iv),
+ pt,
)
class CTRTest(TestCase):
def test_gcl(self):
- """ Test vectors from libgcl3
+ """Test vectors from libgcl3
"""
- sbox = "Gost2814789_TestParamSet"
+ sbox = "id-Gost28147-89-TestParamSet"
key = hexdec(b"0475f6e05038fbfad2c7c390edb3ca3d1547124291ae1e8a2f79cd9ed2bcefbd")
plaintext = bytes(bytearray((
0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00,
)))
iv = b"\x02\x01\x01\x01\x01\x01\x01\x01"
encrypted = cnt(key, plaintext, iv=iv, sbox=sbox)
- self.assertEqual(encrypted, ciphertext)
+ self.assertSequenceEqual(encrypted, ciphertext)
decrypted = cnt(key, encrypted, iv=iv, sbox=sbox)
- self.assertEqual(decrypted, plaintext)
+ self.assertSequenceEqual(decrypted, plaintext)
def test_gcl2(self):
- """ Test vectors 2 from libgcl3
+ """Test vectors 2 from libgcl3
"""
- sbox = "Gost2814789_TestParamSet"
+ sbox = "id-Gost28147-89-TestParamSet"
key = hexdec(b"fc7ad2886f455b50d29008fa622b57d5c65b3c637202025799cadf0768519e8a")
plaintext = bytes(bytearray((
0x07, 0x06, 0x05, 0x04, 0x03, 0x02, 0x01, 0x00,
0x13, 0xcc, 0x55, 0x38, 0xb5, 0x63, 0x32, 0xc5,
0x23, 0xa4, 0xcb, 0x7d, 0x51,
)))
- iv = 8 * b"\x00"
+ iv = BLOCKSIZE * b"\x00"
encrypted = cnt(key, plaintext, iv=iv, sbox=sbox)
- self.assertEqual(encrypted, ciphertext)
+ self.assertSequenceEqual(encrypted, ciphertext)
decrypted = cnt(key, encrypted, iv=iv, sbox=sbox)
- self.assertEqual(decrypted, plaintext)
+ self.assertSequenceEqual(decrypted, plaintext)
class CBCTest(TestCase):
def test_pad_requirement(self):
- key = 32 * b"x"
+ key = KEYSIZE * b"x"
for s in (b"", b"foo", b"foobarbaz"):
with self.assertRaises(ValueError):
cbc_encrypt(key, s, pad=False)
cbc_decrypt(key, s, pad=False)
def test_passes(self):
- iv = urandom(8)
- key = 32 * b"x"
+ iv = urandom(BLOCKSIZE)
+ key = KEYSIZE * b"x"
for pt in (b"foo", b"foobarba", b"foobarbaz", 16 * b"x"):
ct = cbc_encrypt(key, pt, iv)
dt = cbc_decrypt(key, ct)
- self.assertEqual(pt, dt)
+ self.assertSequenceEqual(pt, dt)
def test_iv_existence_check(self):
- key = 32 * b"x"
+ key = KEYSIZE * b"x"
with self.assertRaises(ValueError):
- cbc_decrypt(key, 8 * b"x")
- iv = urandom(8)
- cbc_decrypt(key, cbc_encrypt(key, 8 * b"x", iv))
+ cbc_decrypt(key, BLOCKSIZE * b"x")
+ iv = urandom(BLOCKSIZE)
+ cbc_decrypt(key, cbc_encrypt(key, BLOCKSIZE * b"x", iv))
+
+ def test_meshing(self):
+ pt = urandom(MESH_MAX_DATA * 3)
+ key = urandom(KEYSIZE)
+ ct = cbc_encrypt(key, pt)
+ dt = cbc_decrypt(key, ct)
+ self.assertSequenceEqual(pt, dt)
class CFBMeshingTest(TestCase):
def setUp(self):
- self.key = urandom(32)
- self.iv = urandom(8)
+ self.key = urandom(KEYSIZE)
+ self.iv = urandom(BLOCKSIZE)
def test_single(self):
pt = b"\x00"
ct = cfb_encrypt(self.key, pt, mesh=True)
dec = cfb_decrypt(self.key, ct, mesh=True)
- self.assertEqual(pt, dec)
+ self.assertSequenceEqual(pt, dec)
def test_short(self):
pt = urandom(MESH_MAX_DATA - 1)
ct = cfb_encrypt(self.key, pt, mesh=True)
dec = cfb_decrypt(self.key, ct, mesh=True)
dec_plain = cfb_decrypt(self.key, ct)
- self.assertEqual(pt, dec)
- self.assertEqual(pt, dec_plain)
+ self.assertSequenceEqual(pt, dec)
+ self.assertSequenceEqual(pt, dec_plain)
def test_short_iv(self):
pt = urandom(MESH_MAX_DATA - 1)
ct = cfb_encrypt(self.key, pt, iv=self.iv, mesh=True)
dec = cfb_decrypt(self.key, ct, iv=self.iv, mesh=True)
dec_plain = cfb_decrypt(self.key, ct, iv=self.iv)
- self.assertEqual(pt, dec)
- self.assertEqual(pt, dec_plain)
+ self.assertSequenceEqual(pt, dec)
+ self.assertSequenceEqual(pt, dec_plain)
def test_longer_iv(self):
pt = urandom(MESH_MAX_DATA * 3)
ct = cfb_encrypt(self.key, pt, iv=self.iv, mesh=True)
dec = cfb_decrypt(self.key, ct, iv=self.iv, mesh=True)
dec_plain = cfb_decrypt(self.key, ct, iv=self.iv)
- self.assertEqual(pt, dec)
+ self.assertSequenceEqual(pt, dec)
self.assertNotEqual(pt, dec_plain)