Many code-style improvements

telethon/crypto/aes.py

@@ -6,8 +6,8 @@ class AES:
     @staticmethod
     def decrypt_ige(cipher_text, key, iv):
         """Decrypts the given text in 16-bytes blocks by using the given key and 32-bytes initialization vector"""
-        iv1 = iv[:len(iv)//2]
-        iv2 = iv[len(iv)//2:]
+        iv1 = iv[:len(iv) // 2]
+        iv2 = iv[len(iv) // 2:]
 
         aes = pyaes.AES(key)
 
@@ -17,7 +17,8 @@ class AES:
         cipher_text_block = [0] * 16
         for block_index in range(blocks_count):
             for i in range(16):
-                cipher_text_block[i] = cipher_text[block_index * 16 + i] ^ iv2[i]
+                cipher_text_block[i] = cipher_text[block_index * 16 + i] ^ iv2[
+                    i]
 
             plain_text_block = aes.decrypt(cipher_text_block)
 
@@ -40,8 +41,8 @@ class AES:
             padding_count = 16 - len(plain_text) % 16
             plain_text += os.urandom(padding_count)
 
-        iv1 = iv[:len(iv)//2]
-        iv2 = iv[len(iv)//2:]
+        iv1 = iv[:len(iv) // 2]
+        iv2 = iv[len(iv) // 2:]
 
         aes = pyaes.AES(key)
 
@@ -49,7 +50,8 @@ class AES:
         blocks_count = len(plain_text) // 16
 
         for block_index in range(blocks_count):
-            plain_text_block = list(plain_text[block_index * 16:block_index * 16 + 16])
+            plain_text_block = list(plain_text[block_index * 16:block_index *
+                                               16 + 16])
             for i in range(16):
                 plain_text_block[i] ^= iv1[i]
 

telethon/crypto/auth_key.py

@@ -1,5 +1,5 @@
-from telethon.utils import BinaryWriter, BinaryReader
 import telethon.helpers as utils
+from telethon.utils import BinaryReader, BinaryWriter
 
 
 class AuthKey:

telethon/crypto/rsa.py

@@ -1,7 +1,8 @@
-from telethon.utils import BinaryWriter
-import telethon.helpers as utils
 import os
 
+import telethon.helpers as utils
+from telethon.utils import BinaryWriter
+
 
 class RSAServerKey:
     def __init__(self, fingerprint, m, e):
@@ -18,9 +19,9 @@ class RSAServerKey:
 
         with BinaryWriter() as writer:
             # Write SHA
-            writer.write(utils.sha1(data[offset:offset+length]))
+            writer.write(utils.sha1(data[offset:offset + length]))
             # Write data
-            writer.write(data[offset:offset+length])
+            writer.write(data[offset:offset + length])
             # Add padding if required
             if length < 235:
                 writer.write(os.urandom(235 - length))
@@ -31,21 +32,22 @@ class RSAServerKey:
             # If the result byte count is less than 256, since the byte order is big,
             # the non-used bytes on the left will be 0 and act as padding,
             # without need of any additional checks
-            return int.to_bytes(result, length=256, byteorder='big', signed=False)
+            return int.to_bytes(
+                result, length=256, byteorder='big', signed=False)
 
 
 class RSA:
     _server_keys = {
-        '216be86c022bb4c3':
-            RSAServerKey('216be86c022bb4c3', int('C150023E2F70DB7985DED064759CFECF0AF328E69A41DAF4D6F01B538135A6F9'
-                                                 '1F8F8B2A0EC9BA9720CE352EFCF6C5680FFC424BD634864902DE0B4BD6D49F4E'
-                                                 '580230E3AE97D95C8B19442B3C0A10D8F5633FECEDD6926A7F6DAB0DDB7D457F'
-                                                 '9EA81B8465FCD6FFFEED114011DF91C059CAEDAF97625F6C96ECC74725556934'
-                                                 'EF781D866B34F011FCE4D835A090196E9A5F0E4449AF7EB697DDB9076494CA5F'
-                                                 '81104A305B6DD27665722C46B60E5DF680FB16B210607EF217652E60236C255F'
-                                                 '6A28315F4083A96791D7214BF64C1DF4FD0DB1944FB26A2A57031B32EEE64AD1'
-                                                 '5A8BA68885CDE74A5BFC920F6ABF59BA5C75506373E7130F9042DA922179251F',
-                                                 16), int('010001', 16))
+        '216be86c022bb4c3': RSAServerKey('216be86c022bb4c3', int(
+            'C150023E2F70DB7985DED064759CFECF0AF328E69A41DAF4D6F01B538135A6F9'
+            '1F8F8B2A0EC9BA9720CE352EFCF6C5680FFC424BD634864902DE0B4BD6D49F4E'
+            '580230E3AE97D95C8B19442B3C0A10D8F5633FECEDD6926A7F6DAB0DDB7D457F'
+            '9EA81B8465FCD6FFFEED114011DF91C059CAEDAF97625F6C96ECC74725556934'
+            'EF781D866B34F011FCE4D835A090196E9A5F0E4449AF7EB697DDB9076494CA5F'
+            '81104A305B6DD27665722C46B60E5DF680FB16B210607EF217652E60236C255F'
+            '6A28315F4083A96791D7214BF64C1DF4FD0DB1944FB26A2A57031B32EEE64AD1'
+            '5A8BA68885CDE74A5BFC920F6ABF59BA5C75506373E7130F9042DA922179251F',
+            16), int('010001', 16))
     }
 
     @staticmethod