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https://codeberg.org/privacy1st/arch
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140 lines
3.7 KiB
Markdown
140 lines
3.7 KiB
Markdown
# gnupg
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**TODO**:
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* Currently using graphical pinentry ... this would mean dependend on X11/wayland
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* could this be done with holo?
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* default to terminal-pinentry
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* `de-p1st-gnupg-x11` then changes the /etc/skel files to use graphical-pinentry
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**TODO**:
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To use a smartcard on a new computer, one has to import and then trust the public key!
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```shell
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gpg --import 94F3D3DDAC22802258FC044B6C47C753F0823002.pub
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```
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And then trust the key:
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```shell
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gpg --edit-key 0x94F3D3DDAC22802258FC044B6C47C753F0823002
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trust
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5
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y
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quit
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```
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or
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```shell
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printf "5\ny\nquit\n" | gpg --command-fd 0 --expert --edit-key 0x94F3D3DDAC22802258FC044B6C47C753F0823002 trust
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```
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or
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```shell
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echo "94F3D3DDAC22802258FC044B6C47C753F0823002:6:" | gpg --import-ownertrust
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```
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See also:
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* [export/import ownertrust](https://superuser.com/a/1125128)
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---
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GnuPG german mini HowTo:
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* [pdf](GnuPG_MiniHowto_ger_20200215.pdf)
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One can use `/etc/gnupg/gpgconf.conf` to configure gpg and gpg-agent. However, not all options are available ...
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```shell
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gpgconf --list-options gpg
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gpgconf --list-options gpg-agent
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```
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Using a smartcard:
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* kuketz-blog.de: [gnupg-public-key-authentifizierung-nitrokey-teil3](https://www.kuketz-blog.de/gnupg-public-key-authentifizierung-nitrokey-teil3/)
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* [gnupg.org -> Invoking-GPG_AGENT](https://www.gnupg.org/documentation/manuals/gnupg/Invoking-GPG_002dAGENT.html)
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## gpg.conf
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Location: `~/.gnupg/gpg.conf`
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* https://riseup.net/en/security/message-security/openpgp/best-practices
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* https://github.com/ioerror/duraconf/blob/master/configs/gnupg/gpg.conf
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## gpg-agent.conf
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Location: `~/.gnupg/gpg-agent.conf`
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```
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# List pinentries: pacman -Ql pinentry | grep /usr/bin/
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# If a graphical application shall use ones smartcard one needs to specify a graphical pinentry program.
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pinentry-program /usr/bin/pinentry-gnome3
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# Enable ssh to use a smartcard for authentication.
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enable-ssh-support
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```
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Debug options:
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```
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debug-pinentry
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debug ipc
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verbose
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log-file /home/__USER__/.gnupg/logfile.log
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```
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`gnupg` depends on `pinentry` and `pinentry-gnome3` is part of `pinentry`.
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```
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$ pacman -F /usr/bin/pinentry-gnome3
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usr/bin/pinentry-gnome3 is owned by core/pinentry 1.1.1-1
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```
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## Graphical Login: /etc/profile.d/*.sh, bashrc, .zshrc.local
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* Archwiki: [GnuPG#Configure_pinentry_to_use_the_correct_TTY](https://wiki.archlinux.org/index.php/GnuPG#Configure_pinentry_to_use_the_correct_TTY)
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* These two shell lines are demanded by the gnupg documentation in the chapter `Invoking GPG-AGENT`
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* man 1 gpg-agent -> EXAMPLES -> set env variable GPG_TTY in your login shell
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One's interactive, non-login shell, should run this:
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```shell
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GPG_TTY=$(tty)
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export GPG_TTY
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gpg-connect-agent updatestartuptty /bye >/dev/null
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```
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## SSH_AUTH_SOCK: /etc/profile.d/*.sh, bashrc, .zshrc.local
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* Archwiki: [GnuPG#Set_SSH_AUTH_SOCK](https://wiki.archlinux.org/index.php/GnuPG#Set_SSH_AUTH_SOCK)
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One's interactive, non-login shell, should run this:
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```shell
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unset SSH_AGENT_PID
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if [ "${gnupg_SSH_AUTH_SOCK_by:-0}" -ne $$ ]; then
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SSH_AUTH_SOCK="$(gpgconf --list-dirs agent-ssh-socket)"
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export SSH_AUTH_SOCK
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fi
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```
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## Note about "interactive, non-login, shell"
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The gnupg manual is talking about "login shell" but mentions "~/.bashrc",
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so I assume they mean a "interactive, non-login, shell".
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See https://wiki.archlinux.org/title/bash#Configuration_files
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Correct files to set `SSH_AGENT_PID` and `GPG_TTY`:
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* `/etc/bash.bashrc`
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* `/etc/zsh/zshrc`
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These not work:
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* `/etc/profile.d/99_gnupg.sh` does **not** work!
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> `/etc/profile` This file should be sourced by all POSIX sh-compatible shells
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> upon login: it sets up $PATH and other environment variables and application-specific
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> (/etc/profile.d/*.sh) settings upon login.
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* `/etc/X11/xinit/xinitrc.d/`
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