Off-Line Electronic Cash Based on Secret-Key Certificates
Off-Line Electronic Cash Based on Secret-Key Certificates
复制标题
基于密钥证书的离线电子现金
DOI：
10.1007/3-540-59175-3_86
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
S. Brands
中科院分区：
文献类型：
--
作者：
S. Brands
提出了一种离线电子硬币系统，该系统提供多方安全性和支付的无条件隐私。该系统的效率显着提高以前最有效的这种系统在文献中已知的，由于最近提出的技术称为secret-key certificates.By的定义的秘密密钥certificates的应用，对由一个公钥和一个匹配的证书可以模拟与不可区分的概率分布。这允许从一个众所周知的签名方案到现金系统的各种多项式时间的减少。特别地，仅依赖于一个标准的难解性假设，就可以证明该撤销协议对一个帐户保持器是限制盲的，而在文献中还没有证明过这样的结果.应用秘密密钥证书技术的另一个结果是该撤销协议不是盲签名发布协议.这证伪了人们普遍认为的高效隐私保护离线电子现金系统必须基于盲签名发布协议的提款协议。
An off-line electronic coin system is presented that offers multi-party security and unconditional privacy of payments. The system improves significantly on the efficiency of the previously most efficient such system known in the literature, due to application of a recently proposed technique called secret-key certificates.By definition of secret-key certificates, pairs consisting of a public key and a matching certificate can be simulated with indistinguishable probability distribution. This allows a variety of polynomial-time reductions from a well-known signature scheme to the cash system. In particular, the withdrawal protocol can be proved to be restrictive blind with respect to one account holder, relying only on a standard intractability assumption; no such result has been proved before in the literature.Another consequence of the application of the secret-key certificate technique is that the withdrawal protocol is not a blind signature issuing protocol. This falsifies the popular belief that efficient privacy-protecting off-line electronic cash systems must be based on withdrawal protocols that are blind signature issuing protocols.