A cryptographic system and method for electronic transactions

A method of using transient faults to verify the security of...

A recognition apparatus and method for security systems

A system for controlling access to broadcast transmissions

Access control for portable data storage media

Adaptive data ciphering/deciphering apparatuses and data...

Adaptive power control for a spread spectrum transmitter

Adjusting the amplitude and phase characteristics of...

Advanced encryption standard (aes) hardware cryptographic...

Analog voice privacy device for a secure communications system

Anti-eavesdropping device

Apparatus and method for storing data

Apparatus and method for upgrading terminals to maintain a...

Apparatus and methods for managing key material in...

Asymmetric spread spectrum correlator

Authentication protocols in communication networks

Auto-recoverable auto-certifiable cryptosystems with...

Beamed energy control systems

Block cipher system for data security

Broadcasting system