mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-23 14:58:09 +00:00
141 lines
4.9 KiB
Python
141 lines
4.9 KiB
Python
from common import * # isort:skip
|
|
|
|
from trezor.crypto import aesgcm
|
|
|
|
|
|
class TestCryptoAes(unittest.TestCase):
|
|
|
|
# test vectors from
|
|
# https://csrc.nist.gov/CSRC/media/Projects/Cryptographic-Algorithm-Validation-Program/documents/mac/gcmtestvectors.zip
|
|
|
|
vectors = [
|
|
(
|
|
"11754cd72aec309bf52f7687212e8957",
|
|
"3c819d9a9bed087615030b65",
|
|
"",
|
|
"",
|
|
"",
|
|
"250327c674aaf477aef2675748cf6971",
|
|
),
|
|
(
|
|
"fe9bb47deb3a61e423c2231841cfd1fb",
|
|
"4d328eb776f500a2f7fb47aa",
|
|
"f1cc3818e421876bb6b8bbd6c9",
|
|
"",
|
|
"b88c5c1977b35b517b0aeae967",
|
|
"43fd4727fe5cdb4b5b42818dea7ef8c9",
|
|
),
|
|
(
|
|
"6f44f52c2f62dae4e8684bd2bc7d16ee7c557330305a790d",
|
|
"9ae35825d7c7edc9a39a0732",
|
|
"37222d30895eb95884bbbbaee4d9cae1",
|
|
"1b4236b846fc2a0f782881ba48a067e9",
|
|
"a54b5da33fc1196a8ef31a5321bfcaeb",
|
|
"1c198086450ae1834dd6c2636796bce2",
|
|
),
|
|
(
|
|
"05f714021372ae1c8d72c98e6307fbddb26ee27615860a9fb48ba4c3ea360a00",
|
|
"c0",
|
|
"ec3afbaa1447e47ce068bffb787bd0cadc9f0deceb11fa78e981271390578ae95891f26664b5e62d1fd5fd0d0767a54da5f86f",
|
|
"faf9fa457a8e70ea709da28545f18f041351e8d5",
|
|
"c8c5816ba9e7e0d20820dc0064a519a277889f5ac9661c9882b5a9896fd12836c6721514e885b1d34f5e888d1d85abce8c2ebb",
|
|
"0856f211fade7d26d64478ca46025a3c",
|
|
),
|
|
]
|
|
|
|
def test_gcm(self):
|
|
for vector in self.vectors:
|
|
key, iv, pt, aad, ct, tag = map(unhexlify, vector)
|
|
|
|
# Test encryption.
|
|
ctx = aesgcm(key, iv)
|
|
if aad:
|
|
ctx.auth(aad)
|
|
self.assertEqual(ctx.encrypt(pt), ct)
|
|
self.assertEqual(ctx.finish(), tag)
|
|
|
|
# Test decryption.
|
|
ctx.reset(iv)
|
|
if aad:
|
|
ctx.auth(aad)
|
|
self.assertEqual(ctx.decrypt(ct), pt)
|
|
self.assertEqual(ctx.finish(), tag)
|
|
|
|
def test_gcm_in_place(self):
|
|
for vector in self.vectors:
|
|
key, iv, pt, aad, ct, tag = map(unhexlify, vector)
|
|
buffer = bytearray(pt)
|
|
|
|
# Test encryption.
|
|
ctx = aesgcm(key, iv)
|
|
if aad:
|
|
ctx.auth(aad)
|
|
returned = ctx.encrypt_in_place(buffer)
|
|
self.assertEqual(buffer, ct)
|
|
self.assertEqual(returned, len(buffer))
|
|
self.assertEqual(ctx.finish(), tag)
|
|
|
|
# Test decryption.
|
|
ctx.reset(iv)
|
|
if aad:
|
|
ctx.auth(aad)
|
|
returned = ctx.decrypt_in_place(buffer)
|
|
self.assertEqual(buffer, pt)
|
|
self.assertEqual(returned, len(buffer))
|
|
self.assertEqual(ctx.finish(), tag)
|
|
|
|
def test_gcm_chunks(self):
|
|
for vector in self.vectors:
|
|
key, iv, pt, aad, ct, tag = map(unhexlify, vector)
|
|
|
|
chunk1 = len(pt) // 3
|
|
|
|
# Decrypt by chunks and add authenticated data by chunks.
|
|
ctx = aesgcm(key, iv)
|
|
self.assertEqual(ctx.decrypt(ct[:chunk1]), pt[:chunk1])
|
|
ctx.auth(aad[:17])
|
|
self.assertEqual(ctx.decrypt(ct[chunk1:]), pt[chunk1:])
|
|
ctx.auth(aad[17:])
|
|
self.assertEqual(ctx.finish(), tag)
|
|
|
|
# Encrypt by chunks and add authenticated data by chunks.
|
|
ctx.reset(iv)
|
|
ctx.auth(aad[:7])
|
|
self.assertEqual(ctx.encrypt(pt[:chunk1]), ct[:chunk1])
|
|
ctx.auth(aad[7:])
|
|
self.assertEqual(ctx.encrypt(pt[chunk1:]), ct[chunk1:])
|
|
self.assertEqual(ctx.finish(), tag)
|
|
|
|
def test_gcm_chunks_in_place(self):
|
|
for vector in self.vectors:
|
|
key, iv, pt, aad, ct, tag = map(unhexlify, vector)
|
|
buffer = bytearray(ct)
|
|
chunk1_length = len(pt) // 3
|
|
chunk2_length = len(pt) - chunk1_length
|
|
|
|
# Decrypt by chunks and add authenticated data by chunks.
|
|
ctx = aesgcm(key, iv)
|
|
returned = ctx.decrypt_in_place(memoryview(buffer)[: chunk1_length])
|
|
self.assertEqual(returned, chunk1_length)
|
|
ctx.auth(aad[:17])
|
|
returned = ctx.decrypt_in_place(memoryview(buffer)[chunk1_length:])
|
|
ctx.auth(aad[17:])
|
|
self.assertEqual(returned, chunk2_length)
|
|
self.assertEqual(buffer, pt)
|
|
self.assertEqual(ctx.finish(), tag)
|
|
|
|
# Encrypt by chunks and add authenticated data by chunks.
|
|
ctx.reset(iv)
|
|
ctx.auth(aad[:7])
|
|
returned = ctx.encrypt_in_place(memoryview(buffer)[: chunk1_length])
|
|
self.assertEqual(returned, chunk1_length)
|
|
ctx.auth(aad[7:])
|
|
returned = ctx.encrypt_in_place(memoryview(buffer)[chunk1_length:])
|
|
self.assertEqual(returned, chunk2_length)
|
|
self.assertEqual(buffer, ct)
|
|
self.assertEqual(ctx.finish(), tag)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|