openpgp: impl 3rd party uid certifications.
This adds TSK::certify_key(TPK) which signs the primary userid binding. It also adds TSK::certify_userid(key, UserID) to sign a specific UID.
Fixes #117 (closed)
This adds TSK::certify_key(TPK) which signs the primary userid binding. It also adds TSK::certify_userid(key, UserID) to sign a specific UID.
Fixes #117 (closed)