phc-discussions - Re: [PHC] Re: Argon2 PHC release...

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Date: Sat, 17 Oct 2015 13:16:12 +0000
From: Jean-Philippe Aumasson <jeanphilippe.aumasson@...il.com>
To: discussions@...sword-hashing.net
Subject: Re: [PHC] Re: Argon2 PHC release...

Started removing a bunch of unused helper functions :)
On Sat, 17 Oct 2015 at 15:15, Dmitry Khovratovich <khovratovich@...il.com>
wrote:

> At some point the ref version yielded better performance than optimized:)
>
> Will check how it works now. Also a lot of Blake code is not used, so we
> think of trimming/commenting it
>
> On 17 Oct 2015, at 14:25, Jean-Philippe Aumasson <
> jeanphilippe.aumasson@...il.com> wrote:
>
> Another question (sorry): why just using blake2 ref code rather than the
> version supporting SIMD instructions? for consistency of benchmarks?
>
> Thanks!
>
> On Sat, Oct 17, 2015 at 8:05 AM Jean-Philippe Aumasson <
> jeanphilippe.aumasson@...il.com> wrote:
>
>> Recommended parameters section says
>> "If you do not know the difference between them or you consider
>> side-channel attacks as viable threat, choose Argon2i."
>> and I think it's a good recommendation; safer by default.
>>
>> On Sat, Oct 17, 2015 at 1:29 AM Dmitry Khovratovich <
>> khovratovich@...il.com> wrote:
>>
>>> The spec lists 2d and 2i as primary ones, any suggestions to modify?
>>>
>>> Sent from my iPhone
>>>
>>> On 17 Oct 2015, at 00:30, Jean-Philippe Aumasson <
>>> jeanphilippe.aumasson@...il.com> wrote:
>>>
>>> The simplified API hash() (formerly PHS()) now defaults to Argon2i, as
>>> used in
>>> https://github.com/P-H-C/phc-winner-argon2/blob/master/examples/hash.c
>>>
>>> 4 instances in the final version is too much, we should have only 2: i
>>> and d, or some variants thereof.
>>>
>>> On Fri, Oct 16, 2015 at 11:04 PM Jean-Philippe Aumasson <
>>> jeanphilippe.aumasson@...il.com> wrote:
>>>
>>>> Samuel and I did a number of fixes to
>>>> https://github.com/P-H-C/phc-winner-argon2. If you clone this repo and
>>>> run ./test.sh you should get OKs for all the tests. Or not; please let us
>>>> know then.
>>>>
>>>> I've started a basic README at
>>>> https://github.com/P-H-C/phc-winner-argon2, which will contain usage
>>>> instructions (copying from https://github.com/khovratovich/Argon2).
>>>> Any suggestion or contribution welcome :-)
>>>>
>>>>
>>>>
>>>> On Fri, Oct 16, 2015 at 4:09 PM Jean-Philippe Aumasson <
>>>> jeanphilippe.aumasson@...il.com> wrote:
>>>>
>>>>> Did a couple more tweaks, including a usage() function
>>>>> https://github.com/P-H-C/phc-winner-argon2/blob/master/src/argon2-test.c printed
>>>>> when no argument is given. Still a lot to do here, and ideally we should
>>>>> use getopt for this rather than manual parsing.
>>>>>
>>>>> On Fri, Oct 16, 2015 at 10:58 AM Jean-Philippe Aumasson <
>>>>> jeanphilippe.aumasson@...il.com> wrote:
>>>>>
>>>>>> Working on a simpler code package, current version posted at
>>>>>> https://github.com/P-H-C/phc-winner-argon2
>>>>>>
>>>>>> So far reorganized and cleaned up the whole structure, keeping C only
>>>>>> and not C++, ported a minor change to the blake2b().
>>>>>>
>>>>>> With the Argon2 designers we'll improve the test suite and will make
>>>>>> the argon2 command-line interface more user-friendly.
>>>>>>
>>>>>> Comments and pull requests welcome :-)
>>>>>>
>>>>>>

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