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Posted to dev@mina.apache.org by "Thomas Wolf (Jira)" <ji...@apache.org> on 2021/03/24 08:08:00 UTC

[jira] [Closed] (SSHD-1105) Use all possible signatures for a public key type in public key authentication

     [ https://issues.apache.org/jira/browse/SSHD-1105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Wolf closed SSHD-1105.
-----------------------------
    Fix Version/s: 2.7.0
         Assignee: Thomas Wolf
       Resolution: Fixed

> Use all possible signatures for a public key type in public key authentication
> ------------------------------------------------------------------------------
>
>                 Key: SSHD-1105
>                 URL: https://issues.apache.org/jira/browse/SSHD-1105
>             Project: MINA SSHD
>          Issue Type: Improvement
>    Affects Versions: 2.5.1
>            Reporter: Lyor Goldstein
>            Assignee: Thomas Wolf
>            Priority: Minor
>             Fix For: 2.7.0
>
>          Time Spent: 1h 40m
>  Remaining Estimate: 0h
>
> The current code iterates over the keys the user provided and then attempts to find a +single+ matching signature factory.  However, for some key types (e.g., RSA) there is more than one possible signature - e.g., {{ssh-rsa, rsa-sha2-256, rsa-sha2-512}}. The code should try +all+ matching signature factories in the same +order+ as the user defined them.
> {code:java|title=Pseudo code}
> for (KeyPair kp : userKeys) {
>     Collection<String> aliases = KeyUtils.getAllKeyTypeAliases(kp);
>     for (SignatureFactory factory : userSignatures) {
>           // NOTE: need to check how not to confuse ...-cert@openssh,com.. key type aliases
>           if (aliases.contains(factory.getName()) {
>                tryPublicKeyAuth(factory, kp);
>           }
>     }
> }
> {code}



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