A digital signature verification apparatus

摘要

A digital signature apparatus of the present invention includes a digital signature analyzing means (210) for receiving information which identifies at least a signature object data (101), and a file including a digital signature which contains signatory identifying information (203), analyzing the relationship between said digital signature and the signature object data of said digital signature, verifying the signature and outputting a result of the signature analysis, and a digital signature display image generating means for generating a digital signature display image including the content of said signature object data together with the result of said signature analysis (211). The content of the signature object data and the information on the digital signature are displayed on one and the same screen (205).