We have just released version 0.17.0 of Sequoia. The release includes the low-level crate `sequoia-openpgp`, a program to verify detached signatures geared towards software distribution systems called `sqv`, and a new commandline frontend for Sequoia implementing the [Stateless OpenPGP Command Line Interface] `sqop`.

[Stateless OpenPGP Command Line Interface]: https://datatracker.ietf.org/doc/draft-dkg-openpgp-stateless-cli/

While SOP is not intended for daily use, it is a good way to interact with and explore OpenPGP implementations. SOP is primarily used as abstraction in the [OpenPGP interoperability test suite].

[OpenPGP interoperability test suite]: https://tests.sequoia-pgp.org/

If you use Sequoia, please port your code to the latest version and report any problems you encounter. Thank you.

# SOP primer

To demonstrate SOP, let's generate a key, and encrypt and decrypt a message:

$ sqop generate-key julia@example.org > julia.secret.pgp $ sqop extract-cert < julia.secret.pgp > julia.public.pgp

First, we generate a key for `julia@example.org`. Next, we extract the certificate, i.e. the key without the secret key material.

$ echo "a message" | sqop encrypt julia.public.pgp > message.pgp $ sqop decrypt julia.secret.pgp < message.pgp a message

Here, we encrypt a message with Julia's certificate, and decrypt it with her key.