SECURE STORAGE AND REPLAY OF MEDIA PROGRAM USING HARD- PAIRED RECEIVER AND STORAGE DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a method and a system for securely recording a broadcast media program for playback of afterward restricted usage. SOLUTION: The method and a device are for storing and obtaining a program material for a later replay and comprises a step where a data stream comprising the program material which is enciphered in accordance with a first (CW) enciphering key is received, the program material is decoded, a decipherment program material is enciphered again in accordance with a second enciphering key 516 and the re-enciphered program material is stored in a media storage device 528. A re-enciphering material 518 is obtained from the media storage device 528 and a re-enciphering program material is decoded so that the program material is played-back. The second enciphering key 516 is obtained from meta data which explains a replay right in one embodiment.