摘要： 大多数代理盲签密方案采用先签名后加密的算法，虽然提高了安全性，却增加了计算量和通信复杂度。为此，结合各种代理盲签名和代理签密方案，提出一种无对运算的随机代理盲签密方案，签密时使用随机因子。分析结果表明，该方案不仅满足代理签名和盲签密的特性，而且提高了安全性。

关键词: 代理签密, 签密, 离散对数, 随机性, 代理盲签名, 盲签密

Abstract: At present, most proxy blind signature schemes use first signed encrypted algorithm. The security is improved, but computation and communication complexities are greatly increased. To solve this problem, combining proxy blind signature scheme with proxy signcryption scheme, a randomized proxy blind signcryption scheme without paring computing is proposed. The random factor is used in the signcryption process. The results prove that this scheme meets all the features of proxy signature and blind signcryption, and the security is further enhanced.

Key words: proxy signcryption, signcryption, discrete logarithm, randomization, proxy blind signature, blind signcryption

中图分类号: 

• TP393.08