ELECTRONIC AUTHENTICATION SYSTEM AND ELECTRONIC AUTHENTICATION METHOD

摘要

PROBLEM TO BE SOLVED: To provide an electronic authentication system and an electronic authentication method in which reliability of time stamp information is improved.

SOLUTION: The system is provided with a contents authentication center 100 for receiving the registration of electronic information for a user, issuing an electronic certificate 101 and verifying contents on the basis of the relevant electronic certificate 101 and an independent time authentication center 200 for verifying a time on the basis of the electronic certificate 101. The contents authentication center 100 prepares the electronic certificate 101 by using a time-corrected time stamp means 120 and the time authentication center 20 is provided with a management means 220 for storing information of a public key paired with a secret key to be intrinsically used by the time stamp means 120 together with the ID of the relevant time stamp means 120 and a time verifying means 230 for receiving a verification request based on the electronic certificate 101 from the user and verifying the time on the basis of the information stored in the management means 220.

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