Dynamic private key security system for personal messaging devices

摘要

A dynamic private key security system for personal messaging devices (200) includes a paging terminal (112). The paging terminal (112) has a terminal cryptographic engine (111) that generates an encrypted message using a terminal session key based on a first information content of a prior message, and generates a next message key based on a second information content of a current message. The terminal session key is used to encrypt the current message, and the next message key is used to encrypt a next message.