机构地区: 西安电子科技大学通信工程学院综合业务网理论与关键技术国家重点实验室
出 处: 《电子学报》 2004年第3期404-407,共4页
摘 要: 合同签署是一项重要而频繁的商务活动 .现有的合同签署方案都没有解决“强迫签署”的问题 :B强迫A签署一项A不愿签署的合同 .本文首次引入了“强迫签署”的概念 ,然后利用XTR公钥密码体制中共轭元素的性质 ,提出了一种无强迫的最优合同签署方案 .在可信赖第三方的帮助下 ,A可以提供相应的证据来废除所签署的合同 。 Contract signing is a fundamental and frequent service in electronic commerce. All present contract-signing schemes cannot solve the crime of coercive signing: B forces A to sign a contract that he would not like to sign. The concept of coercive signing is firstly introduced and an optimistic contract-signing scheme without coercion is proposed by using the properties of conjugate elements in XTR system. With the help of the trusted third party, A can offer some evidence to abort the contract, so it ensures the fairness of the system furthest.