ISSUANCE SYSTEM AND CERTIFICATE ISSUANCE SERVER

Abstract

A certificate issuance server includes a storage unit that stores a preshared key, a communication unit that receives a signature and a time stamp transmitted by an information processing device, a verification unit that verifies the signature by using a public key corresponding to a secret key and verifies the time stamp, and an issuance unit that issues an electronic certificate when it is certified that the preshared key had been stored in the information processing device and it is certified that the signature was generated in a term of validity of an electronic certificate. The signature is generated in the term of validity based on the secret key and the preshared key. The time stamp is information certifying timing of the generation of the signature. Upon issuance of the electronic certificate, the communication unit transmits the issued electronic certificate to the information processing device.

CPC Classifications