NON-REPUDIATION-SUPPORTING DIGITAL SIGNATURE METHOD, NON-REPUDIATION-SUPPORTING DIGITAL SIGNATURE SYSTEM PERFORMING SAME, AND RECORDING MEDIUM STORING SAME

摘要

A non-repudiation-supporting digital signature system comprises: a signature verification server to verify digital signature information including a first and a second secret key; and a signature device to provide signature content and the digital signature information at a first time point, receive a verification result from the signature verification server, and check the signature content to provide signature verification content to the signature verification server at a second time point. The signature verification server performs the signature content if a time difference between the first and the second time point is within a specific time.;COPYRIGHT KIPO 2016