[Python-Dev] New hash algorithms: SHA3, SHAKE, BLAKE2, truncated SHA512

[M.-A. Lemburg]

On 27.05.2016 22:58, Ryan Gonzalez wrote:
> On May 27, 2016 3:04 PM, "Victor Stinner" <victor.stinner at gmail.com> wrote:
>>
>> Le vendredi 27 mai 2016, M.-A. Lemburg <mal at egenix.com> a écrit :
>>>
>>> The current patch is 1.2MB for SHA-3 - that's pretty heavy for just
>>> a few hash functions, which aren't in any wide spread use yet and
>>> probably won't be for quite a few years ahead.
>>
>>
>> Oh wow, it's so fat? Why is it so big? Can't we use a lighter version?
>>
> 
> The stark majority of the patch is Lib/test/vectors/sha3_224.txt, which
> seems to be (as the file path implies) just test data. A whopping >1k LOC
> of really long hashes.

Right. There's about 1MB test data in the patch, but even
without that data, the patch adds more than 6400 lines of code.

If we add this now, there should at least be an exit strategy
to remove the code again, when OpenSSL ships with the same
code, IMO.

Aside: BLAKE2 has already landed in OpenSSL 1.1.0:

https://github.com/openssl/openssl/tree/master/crypto/blake2

-- 
Marc-Andre Lemburg
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