Re: IdentityFingerprint feature request

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On Tue, Jan 09, 2018 at 06:33:04PM -0500, Daniel Kahn Gillmor wrote:
> On Tue 2018-01-09 15:58:00 -0500, Gregory Seidman wrote:
> > The IdentityFile config (or -i argument) lets you insist on (or prioritize,
> > at least) a particular key file on disk. The key can be retrieved from
> > ssh-agent without decrypting the file on disk, but it must be found at the
> > specified path. I have a use case in which keys are added to ssh-agent on a
> > forwarded connection, but are not present on disk locally. There is
> > currently no way to refer to a key in ssh-agent that is not also sitting on
> > local disk. I propose either a new config (which I'm calling
> > IdentityFingerprint) or extending the existing IdentityFile to accept the
> > fingerprint (e.g. output from ssh-add -l: SHA256:...) of a key and use that
> > if it's found in ssh-agent.
> 
> try storing the output of "ssh-add -L" in a file (instead of "ssh-add
> -l"), and pass the name of that file in IdentityFile.  it's a two-stage
> process instead of a single stage, but it should work fine.

I had to clean up my .ssh/config file a bit to make this work, but that was
my own fault. That approach works for me, so I'm happy to retract my
request. Thanks for the help!

>     --dkg
--Greg

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