Disclosed herein is a method and apparatus for encrypting and compressing multimedia data, which transforms and compresses multimedia data through an encryption key in a process of compressing the multimedia data to record and transmit the data, and encrypts the multimedia data to allow the data to be...http://www.google.com.au/patents/US7519228?utm_source=gb-gplus-sharePatent US7519228 - Method and apparatus for encrypting and compressing multimedia data
