| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for switching channels at a high speed at the time of performing online contents distribution. <P>SOLUTION: A contents reproduction program is used to execute the step of receiving a reproduction start request by a user and transmitting to an authentication application user authentication and a confirmation request for a viewing consent condition. Further, the contents reproduction program is used to execute the step of reading a decryption key stored beforehand in a cache of its own node and starting to reproduce encrypted contents without waiting for the arrival of a response message from the authentication application. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
