CPR Verification Analysis Based on TSA

Abstract

Time stamp protocol is a message encryption protocol based on Hash function. This paper presents a scheme of electronic medical record authentication system based on timestamp protocol. This scheme encrypts the digital digest of the electronic medical record by means of digital signature, which can reduce the dependence on the communication bandwidth while encrypting. Through the analysis of the anti-attack ability, we can see that based on the context correlation of timestamp chain, this scheme can effectively prevent the modification of the content of electronic medical records and authentication time.