PROGRAM FOR REQUESTING BULK TYPE TIME AUTHENTICATION, RECORDING MEDIUM FOR REQUESTING BULK TYPE TIME AUTHENTICATION, AND, VERIFICATION APPARATUS, VERIFICATION METHOD, VERIFICATION PROGRAM, AND VERIFICATION RECORDING MEDIUM

摘要

PPROBLEM TO BE SOLVED: To eliminate the need of presenting even information not necessarily needed for specified time proof to a third person in a bulk type time authentication method wherein hash values or the like of a plurality of files being proof objects of time authentication are collected into one to create one file and the time authentication is requested totally by the whole file. PSOLUTION: A summary file SF constituted of the hash values h of at least respective entries e1-en included in a computer folder is prepared. Further, a user terminal is provided with a (pre) filter means 13 for shielding desired information in the prepared summary file SF. PCOPYRIGHT: (C)2006,JPO&NCIPI