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利用无限制的聚合签名方案和公钥密码系统广播协议,提出了一个新的安全多方合同签署协议.合同签署协议利用广播协议实现签署者之间消息的分发,利用无限制的聚合签名方案实现签署者之间合同的签署,执行过程分为2个阶段:签署者进行消息-凭证聚合签名的交换;广播发送合同签名.如果执行过程中发生争议,签署者要求仲裁者介入,在保证其公平性的基础上结束协议.该协议满足不可伪造性、不透明性、可提取性和公平性,且随着签署者人数的增加,消息交互次数呈线性增长,效率较高.
A new secure multi-party contract signing protocol is proposed by means of unrestricted aggregate signature scheme and public-key cryptosystem broadcasting protocol.The contract signing protocol uses the broadcasting protocol to distribute the message between signatories and sign with unrestricted aggregation signature scheme Between the signing of the contract, the implementation process is divided into two phases: the signer to sign the exchange of documents signed vouchers; sign the contract to send the broadcast if the implementation of the controversy, the signatory requires arbitrators involved in ensuring its fairness Based on the end of the agreement.The agreement to meet the unforgeability, opacity, accessibility and fairness, and as the number of signatories increased, the number of message interactions showed a linear increase in efficiency.