This paper presents three key distribution schemes for channel protection. With the proposed schemes, encryption keys of the ordered programs can be distributed to the authorized subscribers efficiently and securely. In these schemes, for key updates, at most two messages are transmitted and simpler computation functions, including one-way hash function and XOR operation, are used to reduce the computation cost compared to existing solutions. With our key distribution schemes, only the authorized subscribers can decrypt the ordered programs. Thus, the service provider in a Pay-TV system can charge his subscribers according to their subscriptions and the intelligent property rights of TV programs can be protected by the proposed schemes.
|Number of pages||6|
|Journal||Proceedings - IEEE Computer Society's International Computer Software and Applications Conference|
|State||Published - 1 Dec 2000|
|Event||2000 IEEE 24th Annual International Computer Software and Applications Conference (COMPSAC 2000) - Taipei, Taiwan|
Duration: 25 Oct 2000 → 27 Oct 2000