盲签名具有保护用户隐私的作用,前向安全数字签名可以有效地减少由于密钥泄露所造成的损失.当前大多数前向安全盲签名方案都存在缺陷和难以保障安全性.鉴于此,基于Schnorr算法,提出了一个新的前向安全盲签名方案,并证明了它在随机预言模型下的不可伪造性、盲性和前向安全性,对方案的效率也做了分析.
The blind signature plays an important role in protecting the senders' privacy,and the forward-secure digital signature can effectively reduce the loss that aroused for the reason of secret keys exposure.At present,some forward-secure blind signature schemes have been proposed,but they are mostly incorrect or insecure.In this paper,based on Schnorr blind signature,we propose a new forward-secure blind signature scheme,and prove that the proposed scheme has strong blindness,forward security and unforgeability in the random oracle model.The efficiency analysis is also discussed.