为公平交换协议引入了一个自然的范例一一基于身份的部分代理签名,给出其形式化的安全模型,同时提出了一个高效可证安全的部分代理签名方案.这是一个完全基于身份的优化公平交换协议与以前协议不同的是,该方案没有使用任何零知识证明,有效地避免了大量计算.
This paper introduces a natural paradigm for fair exchange protocols, called ID-based partial proxy signature scheme. A security model with precise and formal definitions is presented, and an efficient and provably secure partial proxy signature scheme is proposed. This is a full ID-based optimistic fair exchange protocol. Unlike the vast majority of previously proposed protocols, this approach does not use any zero knowledge proofs, and thus avoids most of the cosily computations.