一种基于身份无可信中心的代理盲签名方案

An ID-based Proxy Blind Signature Scheme Without Trusted PKG

分析了几个基于身份的代理签名和盲签名,指出它们具有无条件信任私钥产生中心(PKG,Private Key Generator)的共同点.但在实际环境中这个假设并不总是成立.文章结合代理签名和盲签名,利用双线性映射中离散对数难解的特点,在已有基于身份无可信中心签名的基础上,构造了一类基于身份无可信中心的代理盲签名方案.分析表明,提出的代理盲签名是安全有效的.

The paper analyzes seveal ID-based proxy signatures and blind signatures, points out that these systems all need to trust a PKG （Private Key Generator） unconditionally. However this assumption does not always hold in real environment. The paper combines proxy signature with blind signature proposes a new ID-based proxy blind signature scheme without trusted PKG from DLP based on the existing ID-based signature. The analysis shows that the proposed proxy blind signature is secure and effective.