One Group Signature Scheme without Trusted Center

Abstract

For the cheating problem in group signature,With the discrete logarithm problem and zero-knowledge proof protocol,and combined with the participants'identity,agroup signature scheme without trusted center is presented.In the scheme,there is no trusted key distribution center,and the dealer is also a participant,each participant's secret shadow is composed of participants through the shadow of their own secret calculation to get,the group public key recovery is invisible recovery.The analysis shows that the scheme is safe and efficient.