Abstract:
This paper proposes a new Certificate-based Proxy Ring Signature(CB-PRS) scheme against the problems of key escrow and private key distribution existing in the ID-based proxy ring signature scheme. It analyzes and concludes that the scheme possesses the properties of correctness, unforgeability, unconditional anonymity and indistinguishability in random oracle model. Compared with the existing schemes, the scheme has higher efficiency because the bilinear operation makes the computational complexity reduced to O(1) from O(n).
Key words:
proxy ring signature,
bilinear pairings,
key escrow,
private key distribution,
random oracle model
摘要： 针对基于身份的代理环签名方案中的密钥托管和私钥分发问题，提出一种基于证书的代理环签名方案。在随机预言模型中分析证明该方案具有正确性、不可伪造性、无条件匿名性和不可分辨性。与现有方案相比，该方案中的双线性对运算开销由O(n)降到了O(1)，效率得到了提高。
关键词:
代理环签名,
双线性对,
密钥托管,
私钥分发,
随机预言模型
CLC Number:
CHEN Hui-Yan, LI Wei, SU Yan-Fang. Certificate-based Proxy Ring Signature Scheme[J]. Computer Engineering, 2012, 38(16): 149-152.
陈辉焱, 李巍, 苏艳芳. 一种基于证书的代理环签名方案[J]. 计算机工程, 2012, 38(16): 149-152.