Repository: yt-dlp/yt-dlp
File: test/test_aes.py (Python)

Code before:
    def setUp(self):
        self.key = self.iv = [0x20, 0x15] + 14 * [0]
        self.secret_msg = b'Secret message goes here'

    def test_encrypt(self):
        msg = b'message'
        key = list(range(16))
        encrypted = aes_encrypt(bytes_to_intlist(msg), key)
        decrypted = intlist_to_bytes(aes_decrypt(encrypted, key))
        self.assertEqual(decrypted, msg)

    def test_cbc_decrypt(self):
        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'
        )

    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])
            )

Review comment (suggestion):
```suggestion
            b'\x97\x92+\xe5\x0b\xc3\x18\x91ky9m&\xb3\xb5@\xe6\'\xc2\x96.\xc8u\x88\xab9-[\x9e|\xf1\xcd')
```

Code after:
    def setUp(self):
        self.key = self.iv = [0x20, 0x15] + 14 * [0]
        self.secret_msg = b'Secret message goes here'

    def test_encrypt(self):
        msg = b'message'
        key = list(range(16))
        encrypted = aes_encrypt(bytes_to_intlist(msg), key)
        decrypted = intlist_to_bytes(aes_decrypt(encrypted, key))
        self.assertEqual(decrypted, msg)

    def test_cbc_decrypt(self):
        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')

    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):