mod_openpgp is an Apache 2.x module that enhances web-sites to suport OpenPGP-signed requests, OpenPGP-encrypted requests and OpenPGP-based Session Initiation.
Along with Enigform, its client-side Mozilla Firefox Plugin developed by the same author (Arturo 'Buanzo' Busleiman ), they provide a Web-of-Trust oriented alternative to the Hierarchy-based HTTPS. However, OpenPGP-based Secure Session Initiation is fully compatible with HTTPS.
The whole protocol will be published as a Draft once enough community feedback, bug-fixing and features implementation have been obtained.
These details are provided for information only. No information here is legal advice and should not be used as such.