Accommodate TgCrypto

This commit is contained in:
Dan 2018-01-27 17:19:37 +01:00
parent df5379b479
commit 0f35f0b8a6
2 changed files with 26 additions and 23 deletions

View File

@ -16,7 +16,8 @@
# You should have received a copy of the GNU Lesser General Public License # You should have received a copy of the GNU Lesser General Public License
# along with Pyrogram. If not, see <http://www.gnu.org/licenses/>. # along with Pyrogram. If not, see <http://www.gnu.org/licenses/>.
from pyaes import AES # from pyaes import AES
import tgcrypto
BLOCK_SIZE = 16 BLOCK_SIZE = 16
@ -26,11 +27,13 @@ BLOCK_SIZE = 16
class IGE: class IGE:
@classmethod @classmethod
def encrypt(cls, data: bytes, key: bytes, iv: bytes) -> bytes: def encrypt(cls, data: bytes, key: bytes, iv: bytes) -> bytes:
return cls.ige(data, key, iv, True) return tgcrypto.ige_encrypt(data, key, iv)
# return cls.ige(data, key, iv, True)
@classmethod @classmethod
def decrypt(cls, data: bytes, key: bytes, iv: bytes) -> bytes: def decrypt(cls, data: bytes, key: bytes, iv: bytes) -> bytes:
return cls.ige(data, key, iv, False) return tgcrypto.ige_decrypt(data, key, iv)
# return cls.ige(data, key, iv, False)
@staticmethod @staticmethod
def xor(a: bytes, b: bytes) -> bytes: def xor(a: bytes, b: bytes) -> bytes:
@ -40,22 +43,22 @@ class IGE:
"big", "big",
) )
@classmethod # @classmethod
def ige(cls, data: bytes, key: bytes, iv: bytes, encrypt: bool) -> bytes: # def ige(cls, data: bytes, key: bytes, iv: bytes, encrypt: bool) -> bytes:
cipher = AES(key) # cipher = AES(key)
#
iv_1 = iv[:BLOCK_SIZE] # iv_1 = iv[:BLOCK_SIZE]
iv_2 = iv[BLOCK_SIZE:] # iv_2 = iv[BLOCK_SIZE:]
#
data = [data[i: i + BLOCK_SIZE] for i in range(0, len(data), BLOCK_SIZE)] # data = [data[i: i + BLOCK_SIZE] for i in range(0, len(data), BLOCK_SIZE)]
#
if encrypt: # if encrypt:
for i, chunk in enumerate(data): # for i, chunk in enumerate(data):
iv_1 = data[i] = cls.xor(cipher.encrypt(cls.xor(chunk, iv_1)), iv_2) # iv_1 = data[i] = cls.xor(cipher.encrypt(cls.xor(chunk, iv_1)), iv_2)
iv_2 = chunk # iv_2 = chunk
else: # else:
for i, chunk in enumerate(data): # for i, chunk in enumerate(data):
iv_2 = data[i] = cls.xor(cipher.decrypt(cls.xor(chunk, iv_2)), iv_1) # iv_2 = data[i] = cls.xor(cipher.decrypt(cls.xor(chunk, iv_2)), iv_1)
iv_1 = chunk # iv_1 = chunk
#
return b"".join(data) # return b"".join(data)

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@ -67,6 +67,6 @@ setup(
], ],
packages=find_packages(), packages=find_packages(),
zip_safe=False, zip_safe=False,
install_requires=["pyaes", "pysocks"], install_requires=["pyaes", "pysocks", "tgcrypto"],
include_package_data=True, include_package_data=True,
) )