Re: Let PAM know about accepted pubkey?

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On Thu, 18 Feb 2016, Johan Ström wrote:

> Hi,
> 
> first of: my familiarity with OpenSSH/Pam code-base is very limited.. Please
> excuse me if some of this does not make any sense or seems stupid!
> 
> I'm investigating if it is possible for a PAM module to find out which public
> key was accepted (when 'AuthenticationMethods publickey,keyboard-interactive'
> is used). From my digging in the source, it seems it is currently not.
> 
> Would it be possible to provide this information? Maybe using do_pam_putenv()?
> Would there be any security implications of doing this?

There is an open bug about this. I do hope to make the public keys used during
authentication available in the environment (and to PAM), but it won't happen
until 7.3 at the earliest.

-d
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