A method of transmitting a content to a reception side includes the steps of encrypting the content by use of a scramble key that varies with time, encrypting scramble-key-associated information that includes at least the scramble key and usage-control information, the usage-control information indicative of usage of the content on the reception side, and transmitting the encrypted content and the encrypted scramble-key-associated information to the reception side.

 
Web www.patentalert.com

< System, method, and apparatus for securely providing content viewable on a secure device

> Arranging data ciphering in a wireless telecommunication system

~ 00424