Evan ProdromouThe basics are pretty easy. Activity Streams 2.0 supports custom MIME types on content, so using a MIME type like `application/encrypted` (OpenPGP) or `application/pkcs7-mime` (S/MIME) would just pass through the ActivityPub system.
For users experienced with exchanging keys out of band, this is probably enough to get started.
All GNU social JP content and data are available under the