cipherkey is now guaranteed to be 32 characters strong

server/netwrapper.py

@@ -2,6 +2,7 @@
 import json
 from base64 import b64encode, b64decode
 import pyDH
+from Crypto.Hash import SHA512
 from Crypto.Cipher import PKCS1_OAEP
 from Crypto.Cipher import ChaCha20
 from Crypto.PublicKey.RSA import RsaKey
@@ -62,7 +63,10 @@ class NetWrapper:
             decodedmsg = json.loads(msg.decode('UTF-8'))
         cipher_rsa = PKCS1_OAEP.new(self.serverPrivateKey)
         serverpubkey = int(cipher_rsa.decrypt(b64decode(decodedmsg['message'])).decode('UTF-8'))
-        self.cipherkey = dh.gen_shared_key(serverpubkey).encode('UTF-8')
+        cipherkey = dh.gen_shared_key(serverpubkey).encode('UTF-8')
+        hasher = SHA512.new()
+        hasher.update(cipherkey)
+        self.cipherkey = hasher.hexdigest()[:32]
 
 
     def login(self) -> bool: