Improvement And Research of Group Signature Scheme Based on Chinese Remainder Theorem

Based on the analysis of the group signature scheme based on the Chinese remainder theorem, it is found that the existing schemes have shortcomings in anti fake, anti-frame, anti - joint attacks and non - connection. Tthis paper puts forward an improved group signature scheme that apply RSA signature algorithm. The group center participates in the group signature generation, verification and open process. Under the assumption of RSA and discrete logarithm problem, it is proved that the new scheme has good characteristics with anonymity, not relevance, anti-counterfeiting character, trace ability and so on. Compared to other relevant schemes it is more robust and secure.