Re: SHA256 error?

I seem to recall hearing about this bug. The current hashlib of the
python 2.5 development version doesn't have this bug though.

--Guido

On 4/3/06, Marcin Wudarczyk <[email protected]> wrote:
> Hello,
>
>
> I think I have found a problem in the PyCrypto. The following code:
>
> from Crypto.Hash import SHA256
> import sha
>
> c = chr(97)* 631
> dig = SHA256.new(c).digest()
> #print the digest in hex
> print reduce(lambda x, y: x + ("%02x" % ord(y)), dig, "")
>
>
> run against Python2.4 and PyCrypto 2.0.1 (installed from binaries on
> Windows) gives me :
>
>
> 3d0d90e19300f382f39ed71f44077e08aa6a7014fb85de6a0dbaad3065331ade
>
>
> while the result I receive on the site http://www.fileformat.info/tool/
> and with Crypto++ library is:
>
> 3585ed0d637adeac97def14b28180016e92357d0d4f0b6e86c4821c507d9ff96
>
> This problem only concerns string with the length of exactly 631 chars
> with any contents. For other lenghths the outcomes of all three methods
> are the same.
>
> Any ideas? Is it a bug of PyCrypto or am I doing something wrong?
>
> Cheers.
>
> Marcinra
>


--
--Guido van Rossum (home page: http://www.python.org/~guido/)