Russ Housley wrote: >Thanks for doing this work. I hope the TLS WG will promptly adopt it. +1
”Conversely, the fast version prioritizes speed over signature size, minimizing the time required to generate and verify signatures.” This is incorrect. The “f” versions only have faster key generation and signing. They have slower verification. Cheers, John From: Peter C <Peter.C=40ncsc.gov...@dmarc.ietf.org> Date: Sunday, 3 November 2024 at 17:49 To: tirumal reddy <kond...@gmail.com> Cc: IETF TLS <tls@ietf.org> Subject: [TLS] Re: New Version Notification for draft-tls-reddy-slhdsa-00.txt Tiru, Is SLH-DSA considered a practical option for TLS end-entity certificates? Under realistic network conditions, TLS handshakes with full SLH-DSA certificate chains seem to be about 5-10 times slower than traditional certificate chains and, in some cases, can take on the order of seconds. See, for example, the results in https://eprint.iacr.org/2020/071, https://eprint.iacr.org/2021/1447, https://mediatum.ub.tum.de/1728103 and https://thomwiggers.nl/post/tls-measurements/. I agree that there’s an argument for using SLH-DSA in root certificates, but I’m surprised it’s being proposed for the full chain. Peter From: Russ Housley <hous...@vigilsec.com> Sent: 03 November 2024 11:13 To: tirumal reddy <kond...@gmail.com> Cc: IETF TLS <tls@ietf.org> Subject: [TLS] Re: New Version Notification for draft-tls-reddy-slhdsa-00.txt Thanks for doing this work. I hope the TLS WG will promptly adopt it. Russ On Nov 2, 2024, at 8:15 PM, tirumal reddy <kond...@gmail.com> wrote: Hi all, This draft https://datatracker.ietf.org/doc/draft-tls-reddy-slhdsa/ specifies how the PQC signature scheme SLH-DSA can be used for authentication in TLS 1.3. Comments and suggestions are welcome. Regards, -Tiru ---------- Forwarded message --------- From: <internet-dra...@ietf.org<mailto:internet-dra...@ietf.org>> Date: Sun, 3 Nov 2024 at 05:39 Subject: New Version Notification for draft-tls-reddy-slhdsa-00.txt To: Tirumaleswar Reddy.K <kond...@gmail.com<mailto:kond...@gmail.com>>, John Gray <john.g...@entrust.com<mailto:john.g...@entrust.com>>, Scott Fluhrer <sfluh...@cisco.com<mailto:sfluh...@cisco.com>>, Timothy Hollebeek <tim.holleb...@digicert.com<mailto:tim.holleb...@digicert.com>> A new version of Internet-Draft draft-tls-reddy-slhdsa-00.txt has been successfully submitted by Tirumaleswar Reddy and posted to the IETF repository. Name: draft-tls-reddy-slhdsa Revision: 00 Title: Use of SLH-DSA in TLS 1.3 Date: 2024-11-02 Group: Individual Submission Pages: 8 URL: https://www.ietf.org/archive/id/draft-tls-reddy-slhdsa-00.txt Status: https://datatracker.ietf.org/doc/draft-tls-reddy-slhdsa/ HTML: https://www.ietf.org/archive/id/draft-tls-reddy-slhdsa-00.html HTMLized: https://datatracker.ietf.org/doc/html/draft-tls-reddy-slhdsa Abstract: This memo specifies how the post-quantum signature scheme SLH-DSA [FIPS205] is used for authentication in TLS 1.3.
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