STORAGE TYPE BROADCAST RECEIVER

摘要

PROBLEM TO BE SOLVED: To ensure the security and the copyright or the like of a stored program by encrypting the program and storing the encrypted program in the storage type receiver for a broadcast system where a broadcast program is encrypted and the encrypted program is broadcast. SOLUTION: A Ks storage section 109 and a program storage section 108 store a scramble key that is broadcast, separated and encrypted by a separate section 103, and a program encrypted by the scramble key. When viewing the stored program, a Ks decoding section 110 decodes the scramble key. A descramble section 111 descrambles the encrypted program by using a decoded scramble key and the decoded program is viewed on a display device 114. The security of the stored program is protected by storing the encrypted program in this way.