Undeniable signature systems
Unforgeable identification device, identification device reader
Unforgeable personal identification system
Universal broadcast code and multi-level encoded signal monitori
Universal broadcast code and multi-level encoded signal monitori
Unpredictable blind signature systems
Untraceable electronic cash
Upstream signal control apparatus in bidirectional CATV system
Use of bilinear mappings in cryptographic applications
Use of marker packets for synchronization of encryption/decrypti
User authenticating system and method in wide area distributed e
User authentication method and apparatus
User identification and authentication system using ultra long i
User presence verification with single password across applicati
User-addressing method and receiver in an authorized access tele
User-transparent security method and apparatus for authenticatin
Using trusted associations to establish trust in a computer netw