30 years ago today, #PGP 2.6 was released via MIT.
Up to this point, two major issues had been unresolved: The legal status of the use of RSA in PGP, and export of the software from the US to the rest of the world.
With the release of PGP 2.6, the first of these two issues was resolved.
oct-git focuses exclusively on ergonomic use with OpenPGP card-based signing keys
It is designed to be easy to set up, standalone (no long running processes), and entirely hands-off to use (no repeated PIN entry required, by default). It comes with desktop notifications for touch confirmation (if required)
I just released version 0.3.1 of https://crates.io/crates/rsop, a stateless #OpenPGP ("sop") card tool based on #rPGP.
rsop natively supports OpenPGP card (hardware cryptography) devices
rsop is featured in the "OpenPGP interoperability test suite" at https://tests.sequoia-pgp.org/ (under "rpgpie", which is rsop's high level OpenPGP library).