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Re: [TLS] Point Compression

Andrey Jivsov <crypto@brainhub.org> Tue, 26 October 2021 05:15 UTC

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From: Andrey Jivsov <crypto@brainhub.org>
Date: Mon, 25 Oct 2021 22:15:14 -0700
Message-ID: <CAKUk3bt5ALPeCgHo6gr4bRKEaD+i8jmEP_2iCkMrULDowYdNTw@mail.gmail.com>
To: Carl Mehner <c@cem.me>
Cc: IETF TLS <tls@ietf.org>, Eric Rescorla <ekr@rtfm.com>
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Subject: Re: [TLS] Point Compression
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Do we have evidence that "02 <x>" or "03 <x>" is more widespread than <x>
for NIST curves? I haven't seen "02 <x>" or "03 <x>" in deployed products
in TLS / X.509 at all. So, I feel that for TLS space the slate is clean
regarding compression. X25519 uses one coordinate, which is simiiar to
doing <x> for NIST curves...

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