Overview of Needed Activities

    * a collection of Activities for seamless integration with other apps
          o act transparently via Intents and returned data
          o only pop UI if user-action is needed (password, choose key, etc)
          o sign/validate emails
          o encrypt/decrypt emails
          o sign/validate files
          o encrypt/decrypt files
          o show trust level
          o generate private key first time
          o sign OpenPGP keys to certify their validity

A list of gnupg features roughly grouped by potential Activity screen:

    * private key view
          o assume single private key
          o should detailed info on scrollable page
          o include QRCode of fingerprint?
          o publish public key with sigs to keyserver

    * key manager view
          o list of public keys
          o view sigs, trust level, etc.
          o select key to sign, etc.
          o sync local keyring with keyservers

    * public key view
          o view certification signatures for any key
          o option to sign this key

    * signing activity
          o QR code display/scanning for keysigning exchanges
          o display randomart image of fingerprint for keysigning exchanges
          o allow easy QR scanning
          o lsign (local-only unexportable) OpenPGP keys
          o publish certification signatures to keyservers
          o email certification signatures to key owner

    * searching and downloading keys
          o if no key in keyring, prompt to search for key
          o preference to automatically search for less privacy concerned users
          o search/download public keys from keyservers

    * contacts integration
          o what does Google sync from custom fields?
          o show key verification status
          o show trust level
          o clickable link into GPG for signing, detail view