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Thomas Wolf ffc1f9b026 sshd: implement ssh config PubkeyAcceptedAlgorithms Apache MINA sshd 2.6.0 appears to use only the first appropriate public key signature algorithm for a particular key. See [1]. For RSA keys, that is rsa-sha2-512. This breaks authentication at servers that only know the older (and deprecated) ssh-rsa algorithm. With PubkeyAcceptedAlgorithms, users can re-order algorithms in the ssh config file per host, if needed. Setting PubkeyAcceptedAlgorithms ^ssh-rsa will put "ssh-rsa" at the front of the list of algorithms, and then authentication at such servers with RSA keys works again. [1] https://issues.apache.org/jira/browse/SSHD-1105 Bug: 572056 Change-Id: I86c3b93f05960c68936e80642965815926bb2532 Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>	3年前
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sshd	sshd: implement ssh config PubkeyAcceptedAlgorithms	3年前

Thomas Wolf ffc1f9b026 sshd: implement ssh config PubkeyAcceptedAlgorithms

Apache MINA sshd 2.6.0 appears to use only the first appropriate
public key signature algorithm for a particular key. See [1]. For
RSA keys, that is rsa-sha2-512. This breaks authentication at servers
that only know the older (and deprecated) ssh-rsa algorithm.

With PubkeyAcceptedAlgorithms, users can re-order algorithms in
the ssh config file per host, if needed. Setting

  PubkeyAcceptedAlgorithms ^ssh-rsa

will put "ssh-rsa" at the front of the list of algorithms, and then
authentication at such servers with RSA keys works again.

[1] https://issues.apache.org/jira/browse/SSHD-1105

Bug: 572056
Change-Id: I86c3b93f05960c68936e80642965815926bb2532
Signed-off-by: Thomas Wolf <thomas.wolf@paranor.ch>

3年前

sshd

sshd: implement ssh config PubkeyAcceptedAlgorithms

3年前