Advanced stream format (ASF) data stream header object...
Apparatus and method for proving authenticity with personal...
Apparatus and method for reducing transmission bandwidth and...
Approaches for automatically switching message...
Authentication of data transmitted in a digital transmission...
Client digital program insertion in a conditional access module
Communication device, communication log transmitting method...
Communication system and network control apparatus with...
Communication system and network control apparatus with...
Compact secure data communication method
Compact secure data communication method
Conditional access method and apparatus of a receiver system...
Conditional access overlay partial encryption using MPEG...
Content providing system, user system, tracing system,...
Content transmission control device, content distribution...
Control key capable of storing multiple and variable data...
Cryptographic checksums enabling data manipulation and...
Cryptographic method and apparatus
Cryptographic packet processing unit
Cryptographic system enabling ownership of a secure process