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115 lines
3.9 KiB
Python
115 lines
3.9 KiB
Python
import os
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import re
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import unittest
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from pathlib import Path
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import tgcrypto
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class TestCBC256NIST(unittest.TestCase):
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# https://csrc.nist.gov/CSRC/media/Projects/Cryptographic-Standards-and-Guidelines/documents/examples/AES_CBC.pdf
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def test_cbc256_encrypt(self):
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key = bytes.fromhex("""
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603DEB10 15CA71BE 2B73AEF0 857D7781
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1F352C07 3B6108D7 2D9810A3 0914DFF4
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""".replace(" ", "").replace("\n", ""))
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iv = bytes.fromhex("""
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00010203 04050607 08090A0B 0C0D0E0F
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""".replace(" ", "").replace("\n", ""))
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plaintext = bytes.fromhex("""
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6BC1BEE2 2E409F96 E93D7E11 7393172A
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AE2D8A57 1E03AC9C 9EB76FAC 45AF8E51
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30C81C46 A35CE411 E5FBC119 1A0A52EF
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F69F2445 DF4F9B17 AD2B417B E66C3710
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""".replace(" ", "").replace("\n", ""))
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ciphertext = bytes.fromhex("""
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F58C4C04 D6E5F1BA 779EABFB 5F7BFBD6
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9CFC4E96 7EDB808D 679F777B C6702C7D
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39F23369 A9D9BACF A530E263 04231461
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B2EB05E2 C39BE9FC DA6C1907 8C6A9D1B
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""".replace(" ", "").replace("\n", ""))
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self.assertEqual(tgcrypto.cbc256_encrypt(plaintext, key, iv), ciphertext)
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def test_cbc256_decrypt(self):
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key = bytes.fromhex("""
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603DEB10 15CA71BE 2B73AEF0 857D7781
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1F352C07 3B6108D7 2D9810A3 0914DFF4
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""".replace(" ", "").replace("\n", ""))
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iv = bytes.fromhex("""
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00010203 04050607 08090A0B 0C0D0E0F
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""".replace(" ", "").replace("\n", ""))
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ciphertext = bytes.fromhex("""
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F58C4C04 D6E5F1BA 779EABFB 5F7BFBD6
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9CFC4E96 7EDB808D 679F777B C6702C7D
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39F23369 A9D9BACF A530E263 04231461
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B2EB05E2 C39BE9FC DA6C1907 8C6A9D1B
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""".replace(" ", "").replace("\n", ""))
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plaintext = bytes.fromhex("""
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6BC1BEE2 2E409F96 E93D7E11 7393172A
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AE2D8A57 1E03AC9C 9EB76FAC 45AF8E51
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30C81C46 A35CE411 E5FBC119 1A0A52EF
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F69F2445 DF4F9B17 AD2B417B E66C3710
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""".replace(" ", "").replace("\n", ""))
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self.assertEqual(tgcrypto.cbc256_decrypt(ciphertext, key, iv), plaintext)
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class TestCBC256Cryptography(unittest.TestCase):
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# https://github.com/pyca/cryptography/blob/cd4de3ce6dc2a0dd4171b869e187857e4125853b/vectors/cryptography_vectors/ciphers/AES/CBC
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TEMPLATE = """
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def test_cbc256_{mode}_{name}_{count}(self):
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key = bytes.fromhex("{key}")
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iv = bytes.fromhex("{iv}")
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plaintext = bytes.fromhex("{plaintext}")
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ciphertext = bytes.fromhex("{ciphertext}")
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self.assertEqual(tgcrypto.cbc256_{mode}({input}, key, iv), {output})
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""".replace("\n ", "\n")
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PATTERN = r"COUNT = (\d+)\nKEY = (\w+)\nIV = (\w+)\n(PLAINTEXT|CIPHERTEXT) = (\w+)\n(PLAINTEXT|CIPHERTEXT) = (\w+)"
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for path in (Path(__file__).parent / "vectors").rglob("*.rsp"):
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with open(path, "r", encoding="utf-8") as f:
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for match in re.finditer(PATTERN, f.read()):
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count, key, iv, plain_or_cipher, bytes1, _, bytes2 = match.groups()
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if plain_or_cipher == "PLAINTEXT":
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mode = "encrypt"
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plaintext = bytes1
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ciphertext = bytes2
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input = "plaintext"
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output = "ciphertext"
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else:
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mode = "decrypt"
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plaintext = bytes2
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ciphertext = bytes1
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input = "ciphertext"
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output = "plaintext"
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exec(
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TEMPLATE.format(
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mode=mode,
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name=os.path.split(path)[-1].split(".")[0],
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count=count,
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key=key,
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iv=iv,
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plaintext=plaintext,
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ciphertext=ciphertext,
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input=input,
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output=output
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)
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)
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if __name__ == "__main__":
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unittest.main()
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