System for preparing and distributing copyright-protected electronic media in a receiver, involves encoding data for reproduction after applying cryptographic processes.
DE10164135A1
Multimedia protection system divides data for part encryption with variable length key
DE10164133A1
System for storing and reproducing copyright-/use-protected electronic sound/image media in a receiver encodes data for electronic media subject to cryptographic processes.
DE10164131A1
Cryptographic module for the storage and playback of copy and usage protected electronic audio and video media
DE19948319A1
Setting-up system for document secure against forging, using security module generating temporary secret
