Let PAM know about accepted pubkey?

[Johan Ström]

On 19/02/16 00:27, Damien Miller wrote:
> 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.

Ah, great! I also got an off-list message from Damien, the author of
said bug:

https://bugzilla.mindrot.org/show_bug.cgi?id=2408

I've added my +1 on the ticket to express my interest, hoping it
attracts some interest!