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trezor-core
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trezor.crypto.aes finished (including unit tests)

This commit is contained in:
Pavol Rusnak 2016-09-22 12:57:51 +02:00
parent fc05f25255
commit d9495b12ac
No known key found for this signature in database
GPG Key ID: 91F3B339B9A02A3D
2 changed files with 70 additions and 9 deletions
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18
extmod/modtrezorcrypto/modtrezorcrypto-aes.h
View File

@ -50,24 +50,24 @@ STATIC mp_obj_t mod_TrezorCrypto_AES_make_new(const mp_obj_type_t *type, size_t
memset(o->ctr, 0, AES_BLOCK_SIZE);
switch (key.len) {
case 16:
if ((o->mode & 0x80) == 0x00) {
aes_encrypt_key128(key.buf, &(o->ctx.encrypt_ctx));
} else {
if (o->mode == 0x80 || o->mode == 0x81) {
aes_decrypt_key128(key.buf, &(o->ctx.decrypt_ctx));
} else {
aes_encrypt_key128(key.buf, &(o->ctx.encrypt_ctx));
}
break;
case 24:
if ((o->mode & 0x80) == 0x00) {
aes_encrypt_key192(key.buf, &(o->ctx.encrypt_ctx));
} else {
if (o->mode == 0x80 || o->mode == 0x81) {
aes_decrypt_key192(key.buf, &(o->ctx.decrypt_ctx));
} else {
aes_encrypt_key192(key.buf, &(o->ctx.encrypt_ctx));
}
break;
case 32:
if ((o->mode & 0x80) == 0x00) {
aes_encrypt_key256(key.buf, &(o->ctx.encrypt_ctx));
} else {
if (o->mode == 0x80 || o->mode == 0x81) {
aes_decrypt_key256(key.buf, &(o->ctx.decrypt_ctx));
} else {
aes_encrypt_key256(key.buf, &(o->ctx.encrypt_ctx));
}
break;
}

61
src/tests/test_crypto_aes.py Normal file
View File

@ -0,0 +1,61 @@
import sys
sys.path.append('..')
sys.path.append('../lib')
import unittest
from ubinascii import unhexlify
from trezor.crypto.aes import *
class TestCryptoAes(unittest.TestCase):
# vectors from https://github.com/ricmoo/pyaes
key = b'This_key_for_demo_purposes_only!'
iv = b'InitializationVe'
def test_ecb(self):
a = AES_ECB_Encrypt(key=self.key)
plain = b'TextMustBe16Byte'
e = a.update(plain)
self.assertEqual(e, b'L6\x95\x85\xe4\xd9\xf1\x8a\xfb\xe5\x94X\x80|\x19\xc3')
a = AES_ECB_Decrypt(key=self.key)
d = a.update(e)
self.assertEqual(d, plain)
def test_cbc(self):
a = AES_CBC_Encrypt(key=self.key, iv=self.iv)
plain = b'TextMustBe16Byte'
e = a.update(plain)
self.assertEqual(e, b'\xd6:\x18\xe6\xb1\xb3\xc3\xdc\x87\xdf\xa7|\x08{k\xb6')
a = AES_CBC_Decrypt(key=self.key, iv=self.iv)
d = a.update(e)
self.assertEqual(d, plain)
def test_cfb(self):
a = AES_CFB_Encrypt(key=self.key, iv=self.iv)
plain = b'TextMustBeAMultipleOfSegmentSize'
e = a.update(plain)
self.assertEqual(e, b'v\xa9\xc1w"\x8aL\x93oU:\x9a\xa5\xa0\x90k\x1a/\xb4\\U\xc3>\xffh\x08\xe5\xac\'\xc4\xcfv')
a = AES_CFB_Decrypt(key=self.key, iv=self.iv)
d = a.update(e)
self.assertEqual(d, plain)
def test_ofb(self):
a = AES_OFB_Encrypt(key=self.key, iv=self.iv)
plain = b'Text may be any length you wish, no padding is required'
e = a.update(plain)
self.assertEqual(e, b'v\xa9\xc1wO\x92^\x9e\rR\x1e\xf7\xb1\xa2\x9d"l1\xc7\xe7\x9d\x87(\xc26s\xdd8\xc8@\xb6\xd9!\xf5\x0cM\xaa\x9b\xc4\xedLD\xe4\xb9\xd8\xdf\x9e\xac\xa1\xb8\xea\x0f\x8ev\xb5')
a = AES_OFB_Decrypt(key=self.key, iv=self.iv)
d = a.update(e)
self.assertEqual(d, plain)
def test_ctr(self):
a = AES_CTR_Encrypt(key=self.key)
plain = b'Text may be any length you wish, no padding is required'
e = a.update(plain)
self.assertEqual(e, b'1\xac\xd9d\xbaM\x8b\xf3I\xac\xce]\x8e\xac\xd8B\x8e\x99\x06.\xf0\x93\xc9\xd1\xc6\x0b*\xb1\x15\xf2*\x1dO\xe8\xef\xeeR63D\xb9~\x8a\x18\xe3\xdf\xd5\x08\\\xfa\x97"\x9dl\xb8')
a = AES_CTR_Decrypt(key=self.key)
d = a.update(e)
self.assertEqual(d, plain)
if __name__ == '__main__':
unittest.main()