AUTHENTICATION SYSTEM, AUTHENTICATION APPARATUS, AUTHENTICATION METHOD AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide an authentication system or the like whereby data transmitted on a bus whose architecture is known are not illegitimately processed. SOLUTION: A contents reproduction machine 1 transmits a software certificate including a signed hash value of a contents reproduction program to a PC-DTV board 2. The PC-DTV board 2 supplies a unit certificate including a signature signed to its own ID to the contents reproduction machine 1 when successfully authenticating the signature in the software certificate. When successfully authenticating the signature in the unit certificate, the contents reproduction machine 1 generates and signs the hash value of the contents reproduction program and transmits the result to the PC-DTV board 2. When successfully authenticating the signature of the hash value, the PC-DTV board 2 discriminates whether or not the hash value is coincident with the hash value in the software certificate, and blocks execution of the contents reproduction program when the hash value is dissident with the hash value in the software certificate. COPYRIGHT: (C)2004,JPO