initializing/unlocking key explicitely with gpg-agent
Ingo Klöcker
kloecker at kde.org
Thu Jun 5 21:35:33 CEST 2025
On Donnerstag, 5. Juni 2025 18:24:43 Mitteleuropäische Sommerzeit Michael
Richardson wrote:
> I would in general, be happy to login to my desktop when remote, and then
> invoke some command that would unlock my keys for awhile. Using
> pinentry-curses or pinentry-tty if needed. I know that some people resort
> to running a screen just so that gpg-agent has a $GPG_TTY which it can
> always talk to.
>
> As far as I can tell, there is not a way to this with gpg-agent-connect.
> Maybe I'm just missing something.
Unless I'm missing something the PRESET_PASSPHRASE command is what you are
looking for:
$ gpg-connect-agent "help PRESET_PASSPHRASE" /bye
# PRESET_PASSPHRASE [--inquire] [--restricted] \
# <string_or_keygrip> <timeout> [<hexstring>]
#
# Set the cached passphrase/PIN for the key identified by the keygrip
# to passwd for the given time, where -1 means infinite and 0 means
# the default (currently only a timeout of -1 is allowed, which means
# to never expire it). If passwd is not provided, ask for it via the
# pinentry module unless --inquire is passed in which case the passphrase
# is retrieved from the client via a server inquire. The option
# --restricted can be used to put the passphrase into the cache used
# by restricted connections.
You may have to add "allow-preset-passphrase" to your gpg-agent.conf.
Regards,
Ingo
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