数字签名的公平交换是为签署数字合同,电子支付和另外的电子商务行动的一个重要工具。数字签名的公平交换的一个基于标志的计划在这篇论文被建议。协议依靠信任第三方,但是是“乐观”的因为第三方仅仅在一个播放器试图作弊或简单地垮掉的情况中被需要,。建议计划有短签名,低计算和确认费用的性质。它能相当并且高效地认识到数字签名的交换。我们的计划的特色是它是基于身份的,它不需要证书并且有一个简单关键管理。到我们的最好的知识,这是数字签名的公平交换的第一个基于身份的计划。
Fair exchange of digital signatures is an important tool for signing digital contracts, e-payment and other electronic commerce actions. An ID-based scheme of fair exchange of digital signature is proposed in this paper. The protocol relies on a trusted third party, but is "optimistic", in that the third party is only needed in cases where one player attempts to cheat or simply crashes. The proposed scheme has properties of short signature, low computation and verification cost. It can realize exchange of digital signatures fairly and effic, iently. A key feature of our scheme is that it is identity-based, which needs no certificates and has a simple key management. To our best knowledge, this is the first identity based scheme of fair exchange of digital signatures.