[Ssh] draft-miller-ssh-cert

"Scott Fluhrer (sfluhrer)" <sfluhrer@cisco.com> Tue, 22 July 2025 13:32 UTC

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From: "Scott Fluhrer (sfluhrer)" <sfluhrer@cisco.com>
To: sshm <ssh@ietf.org>
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Subject: [Ssh] draft-miller-ssh-cert
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I went through the draft, and I have the following comments:


  *
In Bangkok, I suggested in the working group meeting that the "signature key" field be optionally a hash of the CA public key (to handle the case where the CA public key is large, say, an ML-DSA key).  During the meeting, someone suggested a critical option to indicate that.  Are you still considering that?
  *
Copy/paste error - section 2.5.4 has some obvious typos.

In addition, I have a request for an opinion:


  *
I see that the draft specifies (in sections 2.1.2 to 2.1.5) the formats for DSA, ECDSA, EDDSA, RSA public certificates, and sections 2.5.1 to 2.5.4 the corresponding private certifiates.  There are several postquantum signature proposals for SSH - should those proposals be updated to include their certificate formats?