ietf-openpgp
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Re: [openpgp] SHA3 algorithm ids.

2015-08-11 08:21:29
Phillip Hallam-Baker <phill(_at_)hallambaker(_dot_)com> writes:

There is a very clear need for 512 bits and there is a case for 256 bits.

What's the clear need for -512?  By which I mean a demonstrated practical need
for a hash size of 64 bytes, not a hypothesised need given an imaginary
attack.  I can see a need for SHA-256 (to replace SHA-1), but for something
like SHA3-512 all I can see are downsides (compared to SHA2-256).

Peter.

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