Study on ring signature and its application
CCDC'09 Proceedings of the 21st annual international conference on Chinese Control and Decision Conference
Hyper-elliptic curves based group signature
CCDC'09 Proceedings of the 21st annual international conference on Chinese control and decision conference
Key management scheme with bionic optimization
IITA'09 Proceedings of the 3rd international conference on Intelligent information technology application
Hyper-elliptic curves based ring signature
IITA'09 Proceedings of the 3rd international conference on Intelligent information technology application
Bionic evolution based electronic cash scheme
IITA'09 Proceedings of the 3rd international conference on Intelligent information technology application
International Journal of Business Data Communications and Networking
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Analyses were made on the security threats and weakness of present group signature schemes, and a dynamic group signature with forward security based on elliptic curves cryptosystem was presented. The identity blinding process and probabilistic encryption algorithm of the scheme enable the signature group to be dynamic without changing the group public key and private keys of all the group members. The scheme avoids the direct relationship between signature complexity and group scale, prevents coalition attack and generalized signature forgery. If a signature is successfully attacked or the anonymity tracing protocol is executed, other group signatures generated by the same member earlier and signatures generated by other members are still secure and anonymous, so the group signature scheme proves to be forward secure. Further detailed analyses also justify its brevity, security, high efficiency, and thus considerable improvement on system overheads regarding software and hardware application.