具有消息恢复的指定接收者的盲签名方案

摘要

A new designated verifier blind signature scheme with message recovery based on the discrete logarithm problem is proposed,and its security and efficiency are analyzed and discussed in details.The proposed scheme can satisfy the properties of a blind signature with message recovery,and only designated verifier can verify the validity. It also satisfies the untraceability,that is the signer can't relate the formation process of the blind signature to the unblind signature for the file.The blindness and unlinkability in electronic transactions of business are achieved. At the same time,this scheme has the role of confidentiality of information. The new scheme is more efficient than the existing scheme in terms of computation overhead.%基于离散对数问题,提出了一个具有消息恢复的指定接收者的盲签名方案,并对方案的安全性和效率性进行了详细的分析讨论.方案不仅能满足消息恢复盲签名所要求的性质,而且只有指定的接收者才能验证签名的有效性,具有不可追踪性,即签名者无法将盲签名的行为与去盲后得到的真实文件签名联系起来.新方案实现了电子商务中的盲性和不可链接性且具有增强信息保密性的作用,其效率也优于已有方案.