Totally refactored source files location

Now it *should* be easier to turn Telethon
into a pip package

telethon/crypto/auth_key.py

@@ -0,0 +1,22 @@
+from telethon.utils import BinaryWriter, BinaryReader
+import telethon.helpers as utils
+
+
+class AuthKey:
+    def __init__(self, data):
+        self.key = data
+
+        with BinaryReader(utils.sha1(self.key)) as reader:
+            self.aux_hash = reader.read_long(signed=False)
+            reader.read(4)
+            self.key_id = reader.read_long(signed=False)
+
+    def calc_new_nonce_hash(self, new_nonce, number):
+        """Calculates the new nonce hash based on the current class fields' values"""
+        with BinaryWriter() as writer:
+            writer.write(new_nonce)
+            writer.write_byte(number)
+            writer.write_long(self.aux_hash, signed=False)
+
+            new_nonce_hash = utils.calc_msg_key(writer.get_bytes())
+            return new_nonce_hash