Gpg: Difference between revisions

Latest revision as of 17:19, 22 April 2021

Create strong key

We want an elliptical curve key. It's baked in! But hidden.

gpg --expert --full-generate-key
 Key kind: (9) ECC and ECC
 Elliptical curve: (1) Curve 25519
 Don't expire (0)
 Real name: Michael Behrns-Miller
 email: m@bitpost.com
 Passphrase: ****

PIN entry in emacs

It is neckbeard-borked out of the gate. Fix is here.

PIN entry over ssh

You can in theory decrypt a file over ssh to STDOUT without writing it to disk, but PIN entry fails by default:

ssh secretbox gpg -d secretfile.gpg

Two fixes are required to get PIN entry to work:

Use curses for PIN entry on the secretbox:

[secretbox] emacs ~/.gnupg/gpg-agent.conf
  allow-emacs-pinentry
  allow-loopback-pinentry
  pinentry-program /usr/bin/pinentry-curses

Tell ssh to use tty:

ssh -tt secretbox gpg -d secretfile.gpg

@@ Line 9: / Line 9: @@
    Passphrase: ****
 === PIN entry in emacs ===
-Details are [[Emacs#GPG here]].
+It is neckbeard-borked out of the gate.  Fix is [[Emacs#GPG|here]].
 === PIN entry over ssh ===
-You can in theory decrypt a file over ssh without writing it to disk:
+You can in theory decrypt a file over ssh to STDOUT without writing it to disk, but PIN entry fails by default:
-  ssh prod-cfg-1 gpg -d my_secrets.gpg
+  ssh secretbox gpg -d secretfile.gpg
-But default PIN entry over tty is totally fucking broken.  Try:
+Two fixes are required to get PIN entry to work:
-  emacs .gpg
+* Use curses for PIN entry on the secretbox:
+ [secretbox] emacs ~/.gnupg/gpg-agent.conf
+   allow-emacs-pinentry
+   allow-loopback-pinentry
+   pinentry-program /usr/bin/pinentry-curses
+* Tell ssh to use tty:
+  ssh -tt secretbox gpg -d secretfile.gpg