/usr/lib/python3/dist-packages/Cryptodome/SelfTest/Cipher/test_OFB.py is in python3-pycryptodome 3.4.7-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 | # ===================================================================
#
# Copyright (c) 2015, Legrandin <helderijs@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. 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.
#
# 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 HOLDER 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.
# ===================================================================
import unittest
from Cryptodome.SelfTest.st_common import list_test_cases
from Cryptodome.Util.py3compat import tobytes, b, unhexlify
from Cryptodome.Cipher import AES, DES3, DES
from Cryptodome.Hash import SHAKE128
def get_tag_random(tag, length):
return SHAKE128.new(data=tobytes(tag)).read(length)
from Cryptodome.SelfTest.Cipher.test_CBC import BlockChainingTests
class OfbTests(BlockChainingTests):
aes_mode = AES.MODE_OFB
des3_mode = DES3.MODE_OFB
# Redefine test_unaligned_data_128/64
def test_unaligned_data_128(self):
plaintexts = [ b("7777777") ] * 100
cipher = AES.new(self.key_128, AES.MODE_CFB, self.iv_128, segment_size=8)
ciphertexts = [ cipher.encrypt(x) for x in plaintexts ]
cipher = AES.new(self.key_128, AES.MODE_CFB, self.iv_128, segment_size=8)
self.assertEqual(b("").join(ciphertexts), cipher.encrypt(b("").join(plaintexts)))
cipher = AES.new(self.key_128, AES.MODE_CFB, self.iv_128, segment_size=128)
ciphertexts = [ cipher.encrypt(x) for x in plaintexts ]
cipher = AES.new(self.key_128, AES.MODE_CFB, self.iv_128, segment_size=128)
self.assertEqual(b("").join(ciphertexts), cipher.encrypt(b("").join(plaintexts)))
def test_unaligned_data_64(self):
plaintexts = [ b("7777777") ] * 100
cipher = DES3.new(self.key_192, DES3.MODE_CFB, self.iv_64, segment_size=8)
ciphertexts = [ cipher.encrypt(x) for x in plaintexts ]
cipher = DES3.new(self.key_192, DES3.MODE_CFB, self.iv_64, segment_size=8)
self.assertEqual(b("").join(ciphertexts), cipher.encrypt(b("").join(plaintexts)))
cipher = DES3.new(self.key_192, DES3.MODE_CFB, self.iv_64, segment_size=64)
ciphertexts = [ cipher.encrypt(x) for x in plaintexts ]
cipher = DES3.new(self.key_192, DES3.MODE_CFB, self.iv_64, segment_size=64)
self.assertEqual(b("").join(ciphertexts), cipher.encrypt(b("").join(plaintexts)))
from Cryptodome.SelfTest.Cipher.test_CBC import NistBlockChainingVectors
class NistOfbVectors(NistBlockChainingVectors):
aes_mode = AES.MODE_OFB
des_mode = DES.MODE_OFB
des3_mode = DES3.MODE_OFB
# Create one test method per file
nist_aes_kat_mmt_files = (
# KAT
"OFBGFSbox128.rsp",
"OFBGFSbox192.rsp",
"OFBGFSbox256.rsp",
"OFBKeySbox128.rsp",
"OFBKeySbox192.rsp",
"OFBKeySbox256.rsp",
"OFBVarKey128.rsp",
"OFBVarKey192.rsp",
"OFBVarKey256.rsp",
"OFBVarTxt128.rsp",
"OFBVarTxt192.rsp",
"OFBVarTxt256.rsp",
# MMT
"OFBMMT128.rsp",
"OFBMMT192.rsp",
"OFBMMT256.rsp",
)
nist_aes_mct_files = (
"OFBMCT128.rsp",
"OFBMCT192.rsp",
"OFBMCT256.rsp",
)
for file_name in nist_aes_kat_mmt_files:
def new_func(self, file_name=file_name):
self._do_kat_aes_test(file_name)
setattr(NistOfbVectors, "test_AES_" + file_name, new_func)
for file_name in nist_aes_mct_files:
def new_func(self, file_name=file_name):
self._do_mct_aes_test(file_name)
setattr(NistOfbVectors, "test_AES_" + file_name, new_func)
del file_name, new_func
nist_tdes_files = (
"TOFBMMT2.rsp", # 2TDES
"TOFBMMT3.rsp", # 3TDES
"TOFBinvperm.rsp", # Single DES
"TOFBpermop.rsp",
"TOFBsubtab.rsp",
"TOFBvarkey.rsp",
"TOFBvartext.rsp",
)
for file_name in nist_tdes_files:
def new_func(self, file_name=file_name):
self._do_tdes_test(file_name)
setattr(NistOfbVectors, "test_TDES_" + file_name, new_func)
# END OF NIST OFB TEST VECTORS
class SP800TestVectors(unittest.TestCase):
"""Class exercising the OFB test vectors found in Section F.4
of NIST SP 800-3A"""
def test_aes_128(self):
plaintext = '6bc1bee22e409f96e93d7e117393172a' +\
'ae2d8a571e03ac9c9eb76fac45af8e51' +\
'30c81c46a35ce411e5fbc1191a0a52ef' +\
'f69f2445df4f9b17ad2b417be66c3710'
ciphertext = '3b3fd92eb72dad20333449f8e83cfb4a' +\
'7789508d16918f03f53c52dac54ed825' +\
'9740051e9c5fecf64344f7a82260edcc' +\
'304c6528f659c77866a510d9c1d6ae5e'
key = '2b7e151628aed2a6abf7158809cf4f3c'
iv = '000102030405060708090a0b0c0d0e0f'
key = unhexlify(key)
iv = unhexlify(iv)
plaintext = unhexlify(plaintext)
ciphertext = unhexlify(ciphertext)
cipher = AES.new(key, AES.MODE_OFB, iv)
self.assertEqual(cipher.encrypt(plaintext), ciphertext)
cipher = AES.new(key, AES.MODE_OFB, iv)
self.assertEqual(cipher.decrypt(ciphertext), plaintext)
cipher = AES.new(key, AES.MODE_OFB, iv)
self.assertEqual(cipher.encrypt(plaintext[:-8]), ciphertext[:-8])
cipher = AES.new(key, AES.MODE_OFB, iv)
self.assertEqual(cipher.decrypt(ciphertext[:-8]), plaintext[:-8])
def test_aes_192(self):
plaintext = '6bc1bee22e409f96e93d7e117393172a' +\
'ae2d8a571e03ac9c9eb76fac45af8e51' +\
'30c81c46a35ce411e5fbc1191a0a52ef' +\
'f69f2445df4f9b17ad2b417be66c3710'
ciphertext = 'cdc80d6fddf18cab34c25909c99a4174' +\
'fcc28b8d4c63837c09e81700c1100401' +\
'8d9a9aeac0f6596f559c6d4daf59a5f2' +\
'6d9f200857ca6c3e9cac524bd9acc92a'
key = '8e73b0f7da0e6452c810f32b809079e562f8ead2522c6b7b'
iv = '000102030405060708090a0b0c0d0e0f'
key = unhexlify(key)
iv = unhexlify(iv)
plaintext = unhexlify(plaintext)
ciphertext = unhexlify(ciphertext)
cipher = AES.new(key, AES.MODE_OFB, iv)
self.assertEqual(cipher.encrypt(plaintext), ciphertext)
cipher = AES.new(key, AES.MODE_OFB, iv)
self.assertEqual(cipher.decrypt(ciphertext), plaintext)
cipher = AES.new(key, AES.MODE_OFB, iv)
self.assertEqual(cipher.encrypt(plaintext[:-8]), ciphertext[:-8])
cipher = AES.new(key, AES.MODE_OFB, iv)
self.assertEqual(cipher.decrypt(ciphertext[:-8]), plaintext[:-8])
def test_aes_256(self):
plaintext = '6bc1bee22e409f96e93d7e117393172a' +\
'ae2d8a571e03ac9c9eb76fac45af8e51' +\
'30c81c46a35ce411e5fbc1191a0a52ef' +\
'f69f2445df4f9b17ad2b417be66c3710'
ciphertext = 'dc7e84bfda79164b7ecd8486985d3860' +\
'4febdc6740d20b3ac88f6ad82a4fb08d' +\
'71ab47a086e86eedf39d1c5bba97c408' +\
'0126141d67f37be8538f5a8be740e484'
key = '603deb1015ca71be2b73aef0857d77811f352c073b6108d72d9810a30914dff4'
iv = '000102030405060708090a0b0c0d0e0f'
key = unhexlify(key)
iv = unhexlify(iv)
plaintext = unhexlify(plaintext)
ciphertext = unhexlify(ciphertext)
cipher = AES.new(key, AES.MODE_OFB, iv)
self.assertEqual(cipher.encrypt(plaintext), ciphertext)
cipher = AES.new(key, AES.MODE_OFB, iv)
self.assertEqual(cipher.decrypt(ciphertext), plaintext)
cipher = AES.new(key, AES.MODE_OFB, iv)
self.assertEqual(cipher.encrypt(plaintext[:-8]), ciphertext[:-8])
cipher = AES.new(key, AES.MODE_OFB, iv)
self.assertEqual(cipher.decrypt(ciphertext[:-8]), plaintext[:-8])
def get_tests(config={}):
tests = []
tests += list_test_cases(OfbTests)
tests += list_test_cases(NistOfbVectors)
tests += list_test_cases(SP800TestVectors)
return tests
if __name__ == '__main__':
suite = lambda: unittest.TestSuite(get_tests())
unittest.main(defaultTest='suite')
|