Security system for handheld wireless devices using time-variable encryption keys

A portable wireless personal communication system for cooperating with a remote certification authority to generate time variable secure key information and to generate time variable secure key information and to employ the time variable secure key information pursuant to a predetermined encryption algorithm to facilitate secure encrypted communication, comprising:

• a. a key generating component having an external configuration suitable to be mounted on an individual's body for wirelessly transmitting a key signal within the immediate proximity of the individual's body when the key generating component is mounted on the individual's body, wherein the key signal comprises secret key information corresponding to the time variable secure key information to facilitate secure wireless communication in accordance with the predetermined encryption algorithm, wherein the secret key information is changed by the key generating component in coordination with changes in the time variable secure key generated by the remote certificate authority;
• and
• b. a handheld wireless component, physically separated from the key generating component, and having an external configuration suitable to be held by a hand of a user to (a) wirelessly receive the key signal transmitted by the key generating component only when within the immediate proximity of the key generating component, (b) use the secret key information included in the key signal to encrypt a message in accordance with the predetermined encryption algorithm, and (c) transmit the encrypted message via a wireless link that forms part of a communication channel connected at one end to said handheld wireless component and connected at the other end to a third party that has communicated with the remote certification authority in accordance with the encryption algorithm, wherein the portable wireless personal communication system is adapted to operate with the remote certification authority that implements a Public Key Infrastructure (PKI) type encryption algorithm, wherein the remote certification authority authenticates the individual on whose body is mounted the key generating component, a sequential series of public keys corresponding one to one to a sequential series of secret keys generated from time to time by said key generating component in accordance with a predetermined PKI key generation algorithm and wherein the key signal broadcast by said key generating component is the secret key corresponding to the public key used by the remote certification authority to facilitate secure communication between third parties and the individual who has been authenticated by the remote certification authority.