Correction so all aes encryption alg. can be used while decrypting.

Author: Hans Hörberg

src/saml2/aes.py

@@ -87,7 +87,7 @@ def encrypt(self, msg, iv=None, alg="aes_128_cbc", padding="PKCS#7",
             return cmsg
 
 
-    def decrypt(self, msg, iv=None, padding="PKCS#7", b64dec=True):
+    def decrypt(self, msg, iv=None, alg="aes_128_cbc", padding="PKCS#7", b64dec=True):
         """
         :param key: The encryption key
         :param iv: init vector
@@ -102,7 +102,7 @@ def decrypt(self, msg, iv=None, padding="PKCS#7", b64dec=True):
         _iv = data[:AES.block_size]
         if iv:
             assert iv == _iv
-        cipher, iv = self.build_cipher(iv)
+        cipher, iv = self.build_cipher(iv, alg=alg)
         res = cipher.decrypt(data)[AES.block_size:]
         if padding in ["PKCS#5", "PKCS#7"]:
             res = res[:-ord(res[-1])]