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List:       cfrg
Subject:    Re: [Cfrg] RGLC on draft-irtf-cfrg-xmss-hash-based-signatures-03.txt
From:       "A. Huelsing" <ietf () huelsing ! net>
Date:       2016-03-21 10:41:59
Message-ID: 56EFCFF7.30405 () huelsing ! net
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Our reasoning behind choosing SHA2 for the first parameter sets was
based on the availability of implementations in the field.
However, this selection is not exclusive! We even describe in the
document what has to be done to define parameter sets
based on other hash functions / block ciphers.

I think it is a question for cfrg if we want to include parameters based
on different hash functions in this state. I guess we can easily
include SHA3 parameters as optional if someone provides us with a
section describing how the different function families are instantiated
using SHA3.

Andreas

On 03/18/16 19:19, Russ Housley wrote:
> The SHA-2 family of hash functions and the SHA-3 family of hash functions have the \
> same security.  They do not have the same performance in many computing \
> environments, so I do not think it is appropriate to exclusively require the SHA-3 \
> family of hash functions. 
> Russ
> 
> 
> On Mar 18, 2016, at 12:36 PM, Gilles Van Assche wrote:
> 
> > Dear all,
> > 
> > As obvious as it may sound from a co-designer of Keccak, I nevertheless
> > think that the proposed scheme should also support FIPS 202 instances.
> > 
> > The same comment goes for draft-mcgrew-hash-sigs and, in general, new
> > proposals from the CFRG. Modern schemes should use modern hash standards.
> > 
> > Kind regards,
> > Gilles
> > 
> > 
> > On 16/03/16 20:45, Alexey Melnikov wrote:
> > > This message starts 4 weeks RGLC on
> > > draft-irtf-cfrg-xmss-hash-based-signatures-03.txt (XMSS: Extended
> > > Hash-Based Signatures) which will end on April 13th. Please let chairs
> > > know if you think the document is ready for IRSG review (and publication
> > > as an RFC) or if you find any issues with it.
> > > 
> > > Best Regards,
> > > Kenny and Alexey
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