SIGNATURE VERIFICATION DEVICE, ITS METHOD, COMPUTER PROGRAM, RECORDING MEDIUM WITH THE PROGRAM RECORDED, AUTHENTICATION STATION, AND METHOD FOR ISSUING PUBLIC KEY CERTIFICATE

摘要

PROBLEM TO BE SOLVED: To provide a signature verification device capable of verifying signatures based on various signature methods while eliminating the necessity of preparing a signature verification program in the signature verification device.;SOLUTION: An intra-certificate information acquiring means 12 acquires the address of a server storing a verification program and a public key from a public key certificate. A verification program acquiring means 13 is connected to the verification program storing server specified by the server address to transmit a signature algorithm identifier and acquire a signature verification program corresponding to the identifier. A signature verification execution means 14 applies a signature generation procedure written in the signature verification program to signature target data, signature data and the public key to verify the signature.;COPYRIGHT: (C)2004,JPO