METHOD OF ISSUING AND VERIFYING TIME STAMP OF ELECTRONIC DOCUMENT USING EMBEDDED TECHNOLOGY

摘要

PURPOSE: A time stamp issuing/inspecting method of an electronic document by using an embedded technique including visual information is provided to easily verify conservation without modulation of the electronic document. CONSTITUTION: A time stamp plugin senses a time stamp issuance request about an electronic document(S210). A time stamp token is generated by including a hash value of the electronic document by commnicating with a time stamp server(S220). The time stamp is merged by using the time stamp plugin(S230). The time stamp includes visual information in a setting region which the document form of the electronic document offers.