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https://issues.apache.org/jira/browse/SSHD-1167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17347116#comment-17347116
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Thomas Wolf commented on SSHD-1167:
-----------------------------------
This may need an API change in any case. {{KnownHostsServerKeyVerifier}}
doesn't check for revoked keys, but should, and if a CA public key is found and
is revoked, {{AbstractClientSession.checkKeys()}} must _not_ fall back to using
the host public key directly.
> KnownHostsServerKeyVerifier: handle CA keys
> -------------------------------------------
>
> Key: SSHD-1167
> URL: https://issues.apache.org/jira/browse/SSHD-1167
> Project: MINA SSHD
> Issue Type: Improvement
> Affects Versions: 2.7.1
> Reporter: Thomas Wolf
> Priority: Major
>
> {{AbstractClientSession.checkKeys()}} correctly calls the
> {{ServerKeyVerifier}} to verify the CA key.
> OpenSSH considers for the check of the CA public key only entries in
> known_hosts that have the "@cert-authority" marker.
> {{KnownHostsServerKeyVerifier}} should do the same.
> This may need an API change to tell the {{ServerKeyVerifier}} whether the
> public key being verified is a CA key or not.
> Also, CA public keys are never added to known_hosts in OpenSSH? At least
> that's the impression I get when looking through the OpenSSH code.
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