一种高效的门限部分盲签名方案

现有的门限签名方案使用一些低效的MapToPoint哈希函数，难以避免因多次使用哈希函数而带来的安全性危害。为此，将门限签名和部分盲签名相结合，提出一种新的基于双线性对的门限部分盲签名方案。分析结果表明，该方案使用高效的普通哈希函数，可提高执行效率，具有满足门限签名和部分盲签名的优点。

Efficient Threshold Partially Blind Signature Scheme

In view of some inefficient MapToPoint hash functions are used in existing threshold signature schemes.which cause these schemes to be very difficult to avoid the threats because of the hash functions many times use in the cryptography.A new threshold partially blind signature from bilinear pairings is proposed which combines the threshold signature and partially blind signature together.Analysis result shows that the new scheme only needs efficient common hash functions,it can improve the efficiency of the scheme and meet the merits of threshold and partially blind signature.