another one would be to allow changing public keys over time (as it may be a good practice [0]). A syntax like the following could help to know what public key you used to encrypt the message, and which private key the client should use to decrypt it:

!<nick url> <encrypted_message> <public_key_hash_7_chars>

Also I’d remove support for storing the message as hex, only allowing base64 (more compact, aiming for a minimalistic spec, etc.)

[0] https://www.brandonchecketts.com/archives/its-2023-you-should-be-using-an-ed25519-ssh-key-and-other-current-best-practices

@eapl.me@eapl.me@eapl.me@eapl.me Agree with the base64 encoding 👌