摘要： 分析一种代理盲签名方案，指出其在生成代理盲签名过程中存在的安全问题，由于不恰当地使用预计算，使攻击者可以轻易计算出代理密钥。为克服该缺陷，提出一种新的基于身份的代理盲签名方案，该方案能够满足不可伪造性、盲性等安全特性，相比于同类方案，其计算复杂度更低。

关键词: 基于身份, 代理盲签名, 双线性对, 盲性, 代理密钥安全

Abstract: A proxy blind signature scheme is analyzed. It is found that proxy blind signature generation phase in this scheme is not secure, adversaries can easily find out the proxy key due to improper use of pre-computation. To resolve the problem, this paper proposes a new ID-based proxy blind signature scheme which satisfies the required security properties of unforgeability and blindness. It has lower computing complex compared with other schemes.

Key words: ID-based, proxy blind signature, bilinear pairings, blindness, proxy key security

中图分类号: 

• TP311