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Re: [TLS] Additional Elliptic Curves (Curve25519 etc) for TLS ECDH key agreement

Watson Ladd <watsonbladd@gmail.com> Mon, 13 January 2014 02:55 UTC

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Date: Sun, 12 Jan 2014 18:55:04 -0800
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From: Watson Ladd <watsonbladd@gmail.com>
To: Manuel Pégourié-Gonnard <mpg@polarssl.org>
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Cc: Adam Langley <agl@imperialviolet.org>, "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] Additional Elliptic Curves (Curve25519 etc) for TLS ECDH key agreement
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On Sun, Jan 12, 2014 at 6:41 PM, Manuel Pégourié-Gonnard
<mpg@polarssl.org> wrote:
> On 13/01/2014 03:17, Salz, Rich wrote:
>>> So, given an opaque<1..2^8-1> in TLS and a desire to plug curve25519 in
>>> there, using curve25519's format just seems less surprising and simpler.
>>
>> +1
>>
> Just to be clear: curve25519's format, plus a leading byte, (eg. 0x41) to
> indicate "curve specific encoding"?

I have no objection to this idea. If a snap/false/jump/start in TLS
1.3 needs to indicate the curve in a compact way,
we can handle that later.

>
> Manuel.
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