Apparatus and method for an authenticated electronic userid

摘要: A method and apparatus for an authenticated electronic userid is provided. According to one embodiment, adapted digital signature generated outbound message from a local user that authorizes remote reply the message. The becomes part of and, when made, includes userid. one-way hash function employed generate signature. if inbound does not have userid, in particular signature, then rejected. An advantage described herein unsolicited bulk messages other non-authorized communications system are reduced.