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Re: [Cfrg] [irsg] IRSG review of draft-irtf-cfrg-xmss-hash-based-signatures-08

Watson Ladd <watsonbladd@gmail.com> Tue, 27 June 2017 14:29 UTC

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References: <D4FDAF9D.8D586%kenny.paterson@rhul.ac.uk> <9a878527-5ab9-5429-7c5d-4f7e4ca4e8db@isode.com> <08944dc3-9086-ed47-cc1b-54248b3dac70@cs.tcd.ie> <D566ADE0.963E4%kenny.paterson@rhul.ac.uk> <9e6b6146-e376-86cb-70be-0127a3e72d16@cs.tcd.ie> <D56DBB2C.96A67%kenny.paterson@rhul.ac.uk> <6f90e485-01f4-5ad8-49ef-e51c52e01a46@cs.tcd.ie> <5e328e85-a8a1-67f1-3853-418309b04a17@huelsing.net> <27cc7000-7fd5-27dd-b8b5-9b9518a9f3ad@huelsing.net>
From: Watson Ladd <watsonbladd@gmail.com>
Date: Tue, 27 Jun 2017 07:28:57 -0700
Message-ID: <CACsn0c=UQ+QcbEC0TRcLR_OJWEmK4ZL8QNLnHLeQgrnqyQiF+A@mail.gmail.com>
To: "A. Huelsing" <ietf@huelsing.net>
Cc: Stephen Farrell <stephen.farrell@cs.tcd.ie>, "Paterson, Kenny" <Kenny.Paterson@rhul.ac.uk>, Alexey Melnikov <alexey.melnikov@isode.com>, "irsg@irtf.org" <irsg@irtf.org>, "cfrg@irtf.org" <Cfrg@irtf.org>, "draft-irtf-cfrg-xmss-hash-based-signatures@ietf.org" <draft-irtf-cfrg-xmss-hash-based-signatures@ietf.org>
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Subject: Re: [Cfrg] [irsg] IRSG review of draft-irtf-cfrg-xmss-hash-based-signatures-08
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On Tue, Jun 27, 2017 at 6:01 AM, A. Huelsing <ietf@huelsing.net> wrote:
> Hi Stephen, hi Kenny, hi Alexey,
>
> We are currently going through the review. While we didn't handle the nits yet,
> we made up our mind about the first four points (see below). Regarding the last
> point of test vectors.
> We think it is better to add a reference implementation. We would now just add
> the C code as appendix. Would that be fine? Are there any conditions on code? We
> have dependencies to OpenSSL for SHA2.

I would prefer just calls to sha256(unsigned char *out, unsigned char
*in, size_t inlen). OpenSS's API  is a mess.
Sincerely,
Watson

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