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[aes] Add aes_gcm_decrypt_and_verify (#1020)

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Authored by: sulyi, pukkandan
This commit is contained in:
Ákos Sülyi
2021-09-19 14:22:31 +02:00
committed by GitHub
parent a63d9bd0b0
commit 09906f554d
4 changed files with 214 additions and 69 deletions
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49
test/test_aes.py
View File

@@ -7,7 +7,19 @@ import sys
import unittest
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from yt_dlp.aes import aes_decrypt, aes_encrypt, aes_cbc_decrypt, aes_cbc_encrypt, aes_decrypt_text
from yt_dlp.aes import (
aes_decrypt,
aes_encrypt,
aes_cbc_decrypt,
aes_cbc_decrypt_bytes,
aes_cbc_encrypt,
aes_ctr_decrypt,
aes_ctr_encrypt,
aes_gcm_decrypt_and_verify,
aes_gcm_decrypt_and_verify_bytes,
aes_decrypt_text
)
from yt_dlp.compat import compat_pycrypto_AES
from yt_dlp.utils import bytes_to_intlist, intlist_to_bytes
import base64
@@ -27,18 +39,43 @@ class TestAES(unittest.TestCase):
self.assertEqual(decrypted, msg)
def test_cbc_decrypt(self):
data = bytes_to_intlist(
b"\x97\x92+\xe5\x0b\xc3\x18\x91ky9m&\xb3\xb5@\xe6'\xc2\x96.\xc8u\x88\xab9-[\x9e|\xf1\xcd"
)
decrypted = intlist_to_bytes(aes_cbc_decrypt(data, self.key, self.iv))
data = b'\x97\x92+\xe5\x0b\xc3\x18\x91ky9m&\xb3\xb5@\xe6\x27\xc2\x96.\xc8u\x88\xab9-[\x9e|\xf1\xcd'
decrypted = intlist_to_bytes(aes_cbc_decrypt(bytes_to_intlist(data), self.key, self.iv))
self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
if compat_pycrypto_AES:
decrypted = aes_cbc_decrypt_bytes(data, intlist_to_bytes(self.key), intlist_to_bytes(self.iv))
self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
def test_cbc_encrypt(self):
data = bytes_to_intlist(self.secret_msg)
encrypted = intlist_to_bytes(aes_cbc_encrypt(data, self.key, self.iv))
self.assertEqual(
encrypted,
b"\x97\x92+\xe5\x0b\xc3\x18\x91ky9m&\xb3\xb5@\xe6'\xc2\x96.\xc8u\x88\xab9-[\x9e|\xf1\xcd")
b'\x97\x92+\xe5\x0b\xc3\x18\x91ky9m&\xb3\xb5@\xe6\'\xc2\x96.\xc8u\x88\xab9-[\x9e|\xf1\xcd')
def test_ctr_decrypt(self):
data = bytes_to_intlist(b'\x03\xc7\xdd\xd4\x8e\xb3\xbc\x1a*O\xdc1\x12+8Aio\xd1z\xb5#\xaf\x08')
decrypted = intlist_to_bytes(aes_ctr_decrypt(data, self.key, self.iv))
self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
def test_ctr_encrypt(self):
data = bytes_to_intlist(self.secret_msg)
encrypted = intlist_to_bytes(aes_ctr_encrypt(data, self.key, self.iv))
self.assertEqual(
encrypted,
b'\x03\xc7\xdd\xd4\x8e\xb3\xbc\x1a*O\xdc1\x12+8Aio\xd1z\xb5#\xaf\x08')
def test_gcm_decrypt(self):
data = b'\x159Y\xcf5eud\x90\x9c\x85&]\x14\x1d\x0f.\x08\xb4T\xe4/\x17\xbd'
authentication_tag = b'\xe8&I\x80rI\x07\x9d}YWuU@:e'
decrypted = intlist_to_bytes(aes_gcm_decrypt_and_verify(
bytes_to_intlist(data), self.key, bytes_to_intlist(authentication_tag), self.iv[:12]))
self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
if compat_pycrypto_AES:
decrypted = aes_gcm_decrypt_and_verify_bytes(
data, intlist_to_bytes(self.key), authentication_tag, intlist_to_bytes(self.iv[:12]))
self.assertEqual(decrypted.rstrip(b'\x08'), self.secret_msg)
def test_decrypt_text(self):
password = intlist_to_bytes(self.key).decode('utf-8')

2
test/test_cookies.py
View File

@@ -2,7 +2,6 @@ import unittest
from datetime import datetime, timezone
from yt_dlp import cookies
from yt_dlp.compat import compat_pycrypto_AES
from yt_dlp.cookies import (
LinuxChromeCookieDecryptor,
MacChromeCookieDecryptor,
@@ -53,7 +52,6 @@ class TestCookies(unittest.TestCase):
decryptor = LinuxChromeCookieDecryptor('Chrome', YDLLogger())
self.assertEqual(decryptor.decrypt(encrypted_value), value)
@unittest.skipIf(not compat_pycrypto_AES, 'cryptography library not available')
def test_chrome_cookie_decryptor_windows_v10(self):
with MonkeyPatch(cookies, {
'_get_windows_v10_key': lambda *args, **kwargs: b'Y\xef\xad\xad\xeerp\xf0Y\xe6\x9b\x12\xc2<z\x16]\n\xbb\xb8\xcb\xd7\x9bA\xc3\x14e\x99{\xd6\xf4&'