Re: [Boost-users] Boost 1.68.0 - boost hashing changed ?

Subject: Re: [Boost-users] Boost 1.68.0 - boost hashing changed ?
From: Miguel Ojeda (miguel.ojeda.sandonis_at_[hidden])
Date: 2018-10-23 14:11:34

On Tue, Oct 23, 2018 at 12:36 PM degski <degski_at_[hidden]> wrote:
>
> On Tue, 23 Oct 2018 at 11:25, Miguel Ojeda <miguel.ojeda.sandonis_at_[hidden]> wrote:
>>
>> > Well, uhm, because that seems to be quite handy. All NIST implementations do exactly this.
>>
>> No, sorry, that is a completely different use case. Crypto hashes are
>> used, among other things, in network communications, persistent
>> storage, etc. They need to be "fixed" functions, and their standards
>> provide the exact definition. That is not the case at all with
>> std::hash or Boost.Hash.
>
>
> For debugging purposes, a fixed function seems quite useful to me.

Indeed, that is a good point! An std implementation (and Boost.Hash
too) could provide the means to fix the function for debugging (e.g.
through a #define).

Cheers,
Miguel