Re: pycrypto with different encryption client

Sascha Silbe <[email protected]> Mon, 28 May 2007 13:59:30 +0200

Newsgroups	gmane.comp.python.cryptography
Message-ID	<[email protected]>

On Mon, May 28, 2007 at 05:08:59AM +0200, Ti Lyte wrote:

> Wondering if the IV has anything to do with it, i know the first round 
> in CBC using the IV which none of the javascript clients allow you to 
> set.
A quick glance over the code (aes.js:485..486) suggests that the first 
block of "ciphertext" produced by rijndaelEncrypt() is the IV. So in 
order to decrypt this data it should suffice to take the first block of 
"ciphertext", set it as IV, and decrypt the remaining blocks. Haven't 
tested it, though.

CU Sascha

-- 
http://sascha.silbe.org/

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