| 摘要: |
| 为公平交换协议引入了一个自然的范例--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. |
| 关键词: 基于身份的代理签名 公平交换协议 可证明安全 |
| DOI： |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant Nos.60373039,90604010(国家自然科学基金);the National Science Fund for Distinguished Young Scholars of China under Grant No.60025205(国家杰出青年科学基金) |
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| Constructing Optimistic ID-Based Fair Exchange Protocols via Proxy Signature |
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XU Jing,ZHANG Zhen-Feng,FENG Deng-Guo
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| Abstract: |
| 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 costly computations. |
| Key words: ID-based proxy signature fair exchange protocol provable security |
