Method and apparatus for implementing hierarchical electronic ca

Method and apparatus for implementing partial and complete optio

Method and apparatus for implementing traceable electronic cash

Method and apparatus for improved security using access codes

Method and apparatus for initialization of cryptographic termina

Method and apparatus for integrated ciphering and hashing

Method and apparatus for interoperable validation of key recover

Method and apparatus for key transforms to discriminate between

Method and apparatus for multi-tire time shared CATV jamming

Method and apparatus for operating a transactional server in a p

Method and apparatus for over-the-air programming of communicati

Method and apparatus for password protection of a computer

Method and apparatus for password protection of a computer

Method and apparatus for personal identification

Method and apparatus for personal identification

Method and apparatus for personal identification

Method and apparatus for personal verification utilizing nonpred

Method and apparatus for positively identifying an individual

Method and apparatus for preventing inadmissible deviations from

Method and apparatus for preventing unauthorized monitoring of w