一种新的基于离散对数的盲签名方案及其应用

A new blind signature based on DLP and its application

目的针对已有的一些盲签名方案中采用了耗时的双线性对运算,或者没有提供安全性证明的问题,设计更加高效和安全的盲签名方案。方法利用数字签名技术与盲签名技术。结果提出了一种新的基于离散对数问题的可证安全的盲签名方案。结论方案满足盲签名的盲性、不可链接性和不可伪造性,与现有方案相比具有更高的效率,并且结合代理签名技术,提出了一种可证安全的代理盲签名方案,并证明其满足代理盲签名方案的可区分性、不可伪造性。

Purposes-Some existing blind signature schemes either adopt time-consuming bilinear pare operation or provide no security proof,so it is necessary to design more efficient and secure blind signature schemes.Methods-Using digital signature technology and blind signature technology.Result-A new verifiable blind signature scheme is proposed which is based on discrete logarithm problem.Conclusion-The scheme satisfies the blindness,unlinkability and unforgerability.Compared with the existing schemes,it has higher efficiency.Combined with the proxy signature technology,a provable and secure proxy blind signature scheme is proposed,which is proved to satisfy the discriminability and unforgerability of proxy blind signature scheme.