[Pycrypto-checkins] [ pycrypto-Bugs-1835426 ] Unable to create new AES cipher with 32-byte IV

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Bugs item #1835426, was opened at 2007-11-20 16:35
Message generated for change (Comment added) made by akuchling
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Category: None
Group: None
>Status: Closed
>Resolution: Invalid
Priority: 5
Private: No
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: Unable to create new AES cipher with 32-byte IV

Initial Comment:
class MyCipher:

        def __init__(self):
                self.key = '01234567890123456789012345678901'
                self.iv = '01234567890123456789012345678901'
                self.cipher = AES.new(self.key, AES.MODE_CBC, self.iv)

        def encrypt(self,id):
                return cipher.encrypt(id)

cipher = MyCipher()
cipher.encrypt('foo');

Gives me the error:

ValueError: IV must be 16 bytes long

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>Comment By: A.M. Kuchling (akuchling)
Date: 2008-01-10 11:55

Message:
Logged In: YES 
user_id=11375
Originator: NO

The block size of AES is always 16 bytes, so the IV must also always be 16
bytes.  

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=120937&aid=1835426&group_id=20937