pkgs/profpatsch: add gpg-private-offline-key

These are the scripts I used to print my gpg private key onte a bunch
of A4 papers, as QR codes of the paperkey output.

It also contains an example of how to automatically read it back in
with a ScanSnap „Einzugsscanner“. I think there also was a test that
checks that the full roundtrip works :)

The QR codes generation was designed in a way that they contain the
highest amount of data when printed on A4 paper, while still being
high-redundancy enough that you can destroy about 1/4th of them before
they become unreadable.

The key was also printed as plain paperkey format, so in the worst
case when I don’t have a scanner I can type it in by hand.

1 files changed, 2 insertions, 0 deletions

diff --git a/pkgs/profpatsch/default.nix b/pkgs/profpatsch/default.nix
index 0d2a593a..2ff12510 100644
--- a/pkgs/profpatsch/default.nix
+++ b/pkgs/profpatsch/default.nix
@@ -271,4 +271,6 @@ in rec {
 
 
   backup = import ./backup { inherit pkgs writeExecline getBins backtick; };
+  gpg-private-offline-key = import ./gpg-private-offline-key { inherit pkgs writeExecline getBins; };
+
 }