高效的和可证明安全的无证书部分盲签名方案

为了提高盲签名的签名效率和安全性，学者们提出了多种部分盲签名方案。对其中的两种签名方案分析发现，都存在严重的安全缺陷，其中一种方案存在公钥替换攻击，而另一种方案中不诚实的签名请求者可任意篡改公共协商信息。针对这些安全缺陷，提出了一种新的无证书部分盲签名方案，改进存在的安全缺陷。分析表明，新方案不仅改进了已有方案的安全缺陷，且计算性能更优。

Efficient and Provable Secure Certificateless Partially-Blind Signature Scheme

In order to increase efficiency and improve security, mamy no certificate partially blind signature schemes are proposed. Two of them are analyzed to find that both schemes are not secure. One method exists the replacement attack by public keys. But the dishonest signature requester can tamper with the agreed upon information. A new one is proposed to improve the security flaws in the formers. The results show that the new no certificate partially blind signature scheme has not only improved the security flaws, but also has better computing performance.