EDGE/Cryptography

Potentially, a very important area, since EMail is a highly insecure system. However, the system is not currently live, so there is no danger of fraud. If the system ever becomes widespread, the users will likely include cryptographers who can contribute to this complex area which needs thought. Areas to cover include:
 * Signing s
 * Encrypting, such as using GPG
 * Integration with other crypto systems
 * Revocation options...