DIGITAL BROADCASTING DEVICE, DIGITAL BROADCASTING METHOD, DIGITAL BROADCASTING RECEIVER, DIGITAL BROADCASTING RECEIVING METHOD AND DIGITAL BROADCASTING RECEIVING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a digital broadcasting device, a digital broadcasting method, a digital broadcasting receiver, a digital broadcasting receiving method and a digital broadcasting receiving system capable of reducing burdens regarding the maintenance and management of a server certificate and contributing to the introduction of a broadcasting linked type Internet communication service and the acceleration of an operation.;SOLUTION: At the time of receiving a certificate issuance request including a server public key from a Web server 19, a broadcasting station 17 returns the server certificate for which a digital signature is made by its own broadcasting station secret key to the server public key. The broadcasting station 17 transmits access information for accessing the Web server 19 and a broadcasting station public key for evaluating the digital signature of the server certificate. A digital broadcasting receiver 18 acquires the server certificate digitally signed by the broadcasting station secret key from the Web server 19 accessed on the basis of the received access information and evaluates the digital signature of the server certificate by using the broadcasting station public key.;COPYRIGHT: (C)2003,JPO