基于身份和双线性对的代理环签名方案

本文提出了一种基于身份和双线性对的代理环签名方案,该方案能够有效地防止授权人冒充代理签名者对消息进行签名,从而代理人的利益得到了很好的保护。它综合了代理签名和环签名的优点,通过引入双线性对节省了计算开销,提高了方案的执行效率。与Zhang提出的代理环签名方案相比,我们的方案将签名验证过程中所需的双线性对计算量由O(n)降低到O(1),计算效率更高。此外,本方案还提供了不可否认服务,较好地满足了代理环签名的安全需求。

An Identity-Based Proxy Ring Signature Scheme from Bilinear Pairings

In this paper, we propose an identity- based proxy ring signature scheme from bilinear pairings which combines the advan- tages of proxy signature and of ring signature. Our scheme can prevent the original signer from generating proxy ring signature, thus the profits of the proxy signer are guaranteed. Furthermore, we introduce bilinear pairings to minimize computational overhead and to improve the performance of our scheme. As compared with Zhang' s scheme, our scheme is a computational efficiency improvement for signature verification because the computational cost of bilinear pairings required is reduced from O(n) to O(1). In addition, the proxy ring signature presented in this paper is signer- ambiguous, non- forgeable, verifiable, non- repudiable and identifiable.