Dynamic Group Signature Scheme Based on Non-interactive Proof

Combined with identity-based signature technology and non-interactive proof, a dynamic group signature scheme was built based on the standard group scheme model. This scheme overcame the shortcoming of static property of standard scheme and was of strong Non-frameability. New members could dynamically join in group without updating the group public key and group manager could not forge any member's signature. By the performance and safety analysis of the scheme, it could prove that, this scheme was higher performance than other similar group signature schemes, and the correctness, anti-CPA attack complete anonymity and full traceability of this scheme had satisfied the secure request of standard scheme. Therefore the scheme is of preferable applicability.