GPG extension
This extension is currently being distributed along with Mercurial.
Overview
This extension allows to sign mercurial revisions, checking them or list the signed changesets.
Configuration
Configure your .hgrc to enable the extension by adding following lines:
[extensions] fetch=
Use the '[gpg]' stanza for additional configuration of the extension:
[gpg] cmd=/path/to/gpg-command-to-use key=/path/to/key
Usage
Sign one or more revisions: hg sign [OPTION]... [REVISION]...
Check signed revision: hg sigcheck REVISION
List signed revisions: hg sigs
Use hg help for additional options.