Age plugin which uses recipients/identities from gpg-agent, making it possible to use gpg smartcards

Note: gpg recipient stanzas are not private right now, as it is makes little sense to try to use smartcard on every key to find the one we are recipient for, and I had no interest in doing such things, recipient keygrips are stored as plain text.

Packaged for nix, you can quickly test it using temporary shell, or properly install it however you want

Also available using cargo

First, you need to know a recipient encryption keygrip, it can be obtained by using

What you looking for here is [E]ncryption subkey keygrip = E968AB03A34F6F291B800C6121F350FCFCE8DE4C

Then, you need to convert this keygrip into recipient format understandable by (r)age:

And now you can use this recipient for (r)age:

As you can see, the age encrypted file contains keygrip as plaintext, as mentioned above, this is the intended behavior.

Recepient then can decrypt it as follows:

Note the -j gpg argument: as this plugin only uses gpg-agent, and does not allow you to store identities elsewhere, you can only use the default identity mode with it, and you only need to specify that you want to use it from gpg plugin.