[pkg-gnupg-maint] Bug#807622: also in buster, also with nitrokey

[Hans-Christoph Steiner]

Control: found 807622 2.2.12-1

I'm running buster with a NitroKey, and I'm also affected by this:

$ ssh foo
sign_and_send_pubkey: signing failed: agent refused operation
foo: Permission denied (publickey).
$ gpg-connect-agent 'scd getinfo version /bye
> ^C
$ gpg-connect-agent 'scd getinfo version' /bye
D 2.2.12
OK
$ gpg-connect-agent 'scd getinfo reader_list' /bye
D 20A0:4108:00003BC00000000000000000:0%0A
OK
$ gpg-connect-agent 'scd getinfo app_list' /bye
D openpgp:%0Anks:%0Ap15:%0Ageldkarte:%0Adinsig:%0Asc-hsm:%0A
OK
$ ps -eFH | grep 's[c]daemon'
me     14083  3348  0 58365  4316   4 Jun26 ?        00:00:01
scdaemon --multi-server
$ gpgconf --kill scdaemon
 ~ $ ps -eFH | grep 's[c]daemon'
me     14083  3348  0     0     0   5 Jun26 ?        00:00:01
[scdaemon] <defunct>
$ ssh foo

[now it works!]

$ ps -eFH | grep 's[c]daemon'
me      1175  3348  0 41968  6056   1 10:00 ?        00:00:00
scdaemon --multi-server



I'm going to try to add a systemd hook to kill scdaemon before
suspending.  Basically sticking this script into
/usr/lib/systemd/system-sleep:


#!/bin/sh

if [ "${1}" == "pre" ]; then
    # Do the thing you want before suspend here, e.g.:

    gpgconf --kill scdaemon
elif [ "${1}" == "post" ]; then
    # Do the thing you want after resume here, e.g.:

fi