Distributed Rivest Shamir Adleman signature method and...
Distributed system authentication
Distributed system for responding to watermarked documents
Distribution information management system and method
Distribution of musical products by a web site vendor over...
Distribution of musical products by a web site vendor over...
Document authentication combining digital signature...
Document authentication using a mark that is separate from...
Document authentication using the physical characteristics...
Document management apparatus and document management...
Document or message security arrangements using a numerical...
Document registration
Dual-tier security architecture for inter-domain environments
DVD identification and managed copy authorization
Dynamic auditing of electronic elections
Dynamic authentication and initialization method
Dynamic challenge-response authentication and verification...
Dynamic connection to multiple origin servers in a...
Dynamic multimedia fingerprinting system
Dynamic wavelet feature-based watermark