[Cfrg] Unwarrented change to point formats

Watson Ladd <watsonbladd@gmail.com> Sat, 26 July 2014 17:58 UTC

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Date: Sat, 26 Jul 2014 10:58:09 -0700
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From: Watson Ladd <watsonbladd@gmail.com>
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Subject: [Cfrg] Unwarrented change to point formats
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Dear all,
Curve25519 was a draft. Curve25519 came back with good reviews from
the CFRG. End of story? No: the TLS WG leadership has decided to ask
for the choice of curves, on nebulous criteria, ignoring existing
drafts, on the basis that the curves must be applicable "IETF wide".

I don't see the reason for this, especially given that OpenSSH has
implemented and deployed Curve25519 and Ed25519, complete with
Montgomery form on the wire.  Arguing that we need twisted Edwards
point formats everywhere for consistency with existing libraries
ignores what has already been deployed and widely adopted.

Sincerely,
Watson Ladd