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From: Maxime Rey <maximejeanrey at gmail.com> Hello, I've discovered an issue with sshd when it's configured to use the SSH agent alongside multiple host keys. Specifically, this problem happens during the hostkeys-prove-00 at openssh.com request, when the server attempts to demonstrate ownership of the host keys by...

From: Maxime Rey <maximejeanrey at gmail.com> This tests the hostkey-prove mechanism in sshd when provided with multiple host keys managed by the agent --- regress/hostkey-agent.sh | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/regress/hostkey-agent.sh b/regress/hostkey-agent.sh index 22...

Hello, OpenSSH supports PKCS#11 on the client side, but that does not extend to the server side. I would like to bring PKCS#11 support to sshd. I am working on embedded Linux systems with integrated HSM. The sshd host key is stored on the HSM. To have sshd using that key, we rely on the following chain: sshd -> OpenSSL -> OpenSSL Engine -> HSM Having PKCS#11 support in sshd, would

Hello, I've found that when using the ssh agent and sshd together, there is an issue when using multiple host keys. Specifically, after the key exchange phase, when a client requests proof of ownership for the host keys via the "hostkeys-prove-00 at openssh.com" request, the server prepares the response without specifying the signature algoorithm in case of non-RSA keys. This leads