Title: Transmitting device and receiving device
Application Number: 03178442 Application Date: 2003.07.17
Publication Number: 1472910 Publication Date: 2004.02.04
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04K1/00,H04N7/015,H04N7/26
Applicant(s) Name: Matsushita Electric Ind. Co., Ltd. Address:
Inventor(s) Name:
Attorney & Agent: wang huimin
Abstract:
     A transmission apparatus updates the encryption method in the event the encryption method is broken. The tool ID of a decryption tool for encrypted data is acquired, the presence of the tool is confirmed and the tool is then acquired and updated, and encrypted data is processed and transmitted based on rights information associated with the encrypted data.
Time: 11