Development on this project never materialized. FireGPG is a full-featured extension that you should take a look at instead.
An OpenPGP extension for Firefox
- Signing text content in a form, not only in webmails but also in text areas. Possibility to do it automatically for some websites.
- Verifying signatures in any page (including webmail)
- Encryption of content in webmail forms, or any textarea
- Decryption of content in any page (including webmail)
The project will be separated into a core extension providing the above general functionality, and an extension for each webmail configuration.