Abstract: Combining the advantages of proxy signature and ring signature, this paper proposes a new efficient ID-based proxy ring signature scheme based on bilinear pairings, and proves that it satisfies the security requirements of a proxy ring signature scheme, which contains distinguishability, unforgeability, unconditional ambiguity, undeniability and verifiability. At the same time, comparing with validity of the existing schemes, the computational cost of bilinear pairings which is the biggest is reduced from O(n) to O(1), the computational efficiency of the new scheme is obviously improved.

Key words: ring signature, proxy signature, proxy ring signature, bilinear pairings, security

摘要： 结合代理签名和环签名方案的优点，以双线性对为基础，提出一种新的基于身份的代理环签名方案，并证明其满足代理环签名方案的所有安全性要求，即可区分性、不可伪造性、无条件匿名性、不可否认性和可验证性。与现有方案的效率相比，新方案中计算消耗最大的双线性对运算开销从O(n)降到了O(1)，效率得到提高。

关键词: 环签名, 代理签名, 代理环签名, 双线性对, 安全性

CLC Number: 

• TP309