SDH를 기반으로 개인 식별에 중심을 둔 그룹 디지털 서명

Abstract

In this paper, Group Digital Signature a kind of Digital Signature is possible to check the truth, the signer in a member, using Signature and, way guarantee the anonymity that precise signer's identification not breathe a word. We can offer that more flexible than Established study change over from Assumption SDH(Strong Diffie-Hellman) to Transformation Fiat-Shamir. In this time, offered study takes about 400bite under when Established study takes 1238 bite. And offered Digital Signature method don't stop reducing Signature's size and is centered on personal anonymity and identification more than Established study which add the tracing. Established study is guaranteed the anonymity into group, but reality evil intention signer's identification make check on for every signature isn't guaranteed the anonymity. In other side offered study only retune true or false value of evil intention signer's identification so it isn't necessary for every signature to make check on.