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