---------- Forwarded message ----------
From: Samuel Neves <[email protected]>
Date: Thu, Feb 26, 2015 at 3:02 PM
Subject: Re: [BLAKE2] Fwd: Modernization of Crypto++
To: Zooko O'Whielacronx <[email protected]>, blake2 <[email protected]>
This looks like a potential codegen bug in MSVC; {GCC, Clang} produce
correct code, from what I can tell. What is the
MSVC version being used here?
On 02/26/2015 01:38 PM, Zooko O'Whielacronx wrote:
> ---------- Forwarded message ----------
> From: Jean-Pierre Münch <[email protected]>
> Date: Tue, Jan 27, 2015 at 2:58 PM
> Subject: Re: Modernization of Crypto++
> To: [email protected]
> Cc: [email protected]
>
>
> Hey everyone,
>
> a little update from me concerning the work.
> As I was running some tests with X86 code I first noticed that
> _mm_set_epi64x() isn't supported by MSVC for X86, so I tried to fix
> this with a macro redirection to _mm_set_epi32() BUT it didn't pass
> test vector checks.
> So I do think that _mm_set_epi32() is the root of all evil as it's
> used by BLAKE2s, by scrypt and by X86-BLAKE2b. I'll run some tests
> with an executeble soon (as opposed to unit testing).
> As reaction to the ongoing difficulties with SSE code I disabled it
> locally for BLAKE2s, scrypt and X86-BLAKE2b and enforced the use of
> reference C code.
> As soon as I get positive results, I'll switch back to SSE.
>
> Now some good news:
> Fortuna (the CSPRNG) is finished!
> It doesn't gather entropy by itself yet (-> there's no AutoSeeded
> version yet) but at least it *should* run.
> Entropy collector is scheduled after the fix for SSE-errors.
>
> Code's not yet on GitHub.
>
> BR
>
> JPM
>
> Am Sonntag, 18. Januar 2015 17:46:28 UTC+1 schrieb Jean-Pierre Münch:
>> Hey everyone,
>>
>> I have some normal work to do so future releases will come less often as
>> before.
>>
>> But I've found some free hours and finally fully included BLAKE2 family.
>> But the issue that BLAKE2s' SSE version produces incorrect results is still
>> live.
>>
>> PEM-Pack is now also online although it was kind of broken.
>>
>> @Jeffrey:
>> It might interest what I've changed:
>> 1. I did include "pch.h" as very first header in all CPP-files as this is a
>> requirement in VS
>> 2. I did remove the call to std::transform you make once and replaced it by
>> an equal loop as the call to transform was causing compile-time errors for
>> VS with SDL enabled.
>>
>> Next thing I'll do is to include the Bouncy-Castle-Patch for ECIES.
>> Afterwards I'll finally fix scrypt.
>>
>> At this point (If the BLAKE2 guys confirm the bug and fix it) I'll finally
>> contact Wei Dai as I think I've got enough new stuff to trigger a new
>> release.
>>
>> Code's live on GitHub as usual.
>>
>> BR
>>
>> JPM
>>
>> Am Sonntag, 11. Januar 2015 10:37:36 UTC+1 schrieb Jean-Pierre Münch:
>>> Hey everyone,
>>>
>>> I've tested BLAKE2b code and it passes the test vectors.
>>> However, there is an issue with BLAKE2s.
>>> If i'm using reference code for compression function it'll pass the
>>> vectors, but if I use the SSE2 and SSSE3 optimized code it will fail.
>>> I copied the code directly from the reference library
>>> blake2_code_20140114.zip and manually selected SSE2 and SSSE3 optimizations.
>>>
>>> @zooko:
>>> Could you please check if SSE2 and SSSE3 work correct in BLAKE2s by testing
>>> yourself? (-> DON'T HAVE XOP, DON'T HAVE SSE41, DON'T HAVE AVX, HAVE SSE2,
>>> HAVE SSSE3)
>>>
>>> BR
>>>
>>> JPM
>>>
>>>
>>> Am Donnerstag, 8. Januar 2015 19:35:27 UTC+1 schrieb zooko:
>>>>
>>>>
>>>> On Wed, Jan 7, 2015 at 2:48 PM, Jean-Pierre Münch <[email protected]>
>>>> wrote:
>>>>>
>>>>> @zooko:
>>>>> Can you please post valid test vectors either here or on the BLAKE2
>>>>> website? (two or three per version)
>>>>
>>>> I forwarded your letter to Jean-Philippe Aumasson, and he posted test
>>>> vectors:
>>>>
>>>> https://blake2.net/#ts
>>>>
>>>> Regards,
>>>>
>>>> Zooko
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https://LeastAuthority.com — “Freedom matters.”
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