[Research and realization for certification of EHR based on ECC & SHA-1].

Using elliptic curve cryptosystem (ECC) and SHA-1 message digest algorithms to get the Electronic Health Record (EHR)'s digital finger print, then sending the digital finger print to another unattached organization through the internet, no information about the finger print will be stored on the local server. The system is designed to be a middleware and you can check out whether the EHR has been modified or not by using the finger print generated by the middleware, so as to ensure the EHR's originality and authenticity effectively.