Certificate-Based Perfect Concurrent Signatures
Concurrent signature was introduced as an alternative approach to solving the problem of fair exchange of signatures. It allows two entities to produce two signatures in such a way that, the signer of each signature is ambiguous from a third party’s point of view until the release of a secret, known as the keystone. Once the keystone is released, both signatures become binding to their respective signers concurrently. Certificate-based public key cryptography was introduced to remove the use of certificate to ensure the authentication of the user’s public key in the traditional public key cryptography and to overcome the key escrow problem in the identity-based public key cryptography. Combining the concept of concurrent signature with the concept of certificate-based cryptography, in this paper, we propose a certificate-based perfect concurrent signature scheme assuming the hardness of Computational Diffie-Hellman Problem.
certificate-based public key cryptography concurrent signature fair exchange
Zhenjie Huang Jianneng Chen
Department of Computer Science and Engineering, Zhangzhou Normal University, Fujian, 363000, P. R. China
国际会议
南京
英文
526-530
2010-11-01（万方平台首次上网日期，不代表论文的发表时间）