A new proxy blind signature scheme

作者：Fan Kai^*; Wang Yue; Li Hui

来源：International Journal of Grid and Utility Computing, 2012, 3(1): 38-42.

DOI：10.1504/IJGUC.2012.045709

• Current signatures
• Forward security
• Forward-secure
• Key evolution
• Proxy blind signature
• Security problems
• System security

There is no forward security in any proxy blind signature schemes today. The lack of forward security will impact the system security tremendously if the key is stolen. To avoid such a security problem this paper proposes a forward secure proxy blind signature scheme which employs the key evolution mechanism in a newly proposed proxy blind signature scheme. The security of proxy blind signature and the forward security are both analysed in the proposed scheme. Even if the current signature key is compromised, the attacker cannot forge signatures as if they had been generated before the key leakage. That is to say, signatures signed before the leakage are still valid.

• 出版日期2012
• 单位西安电子科技大学