| 带离线半可信第三方的多方交换协议 |
| |
| 引用本文： | 李艳平,张建中.带离线半可信第三方的多方交换协议[J].西安电子科技大学学报,2004,31(5):811-814. |
| |
| 作者姓名： | 李艳平 张建中 |
| |
| 作者单位： | (陕西师范大学 数学与信息科学学院, 陕西 西安 710062) |
| |
| 基金项目： | 国家自然科学基金资助项目(10271069)，陕西省自然科学基础研究计划项目(2002A03)，陕西师范大学重点科研项目 |
| |
| 摘 要： | 对已有的各种公平交换协议及不可否认协议进行了比较分析．利用公开可验证秘密共享及群加密方案，提出一个新的基于离线半可信第三方的多方公平交换协议．离线第三方只在意外情况下才介入协议，实现了网上交易的最优化；离线第三方不必完全可信，因其只能解密半个密钥分量；保证了交换数据的机密性和交换拓扑的保密性(包括第三方)；参与方可因意外事故退出协议而无损公平，使交易更加灵活且符合实际．
|
| 关 键 词： | 离线半可信第三方 不可否认 数字签名 |
| 文章编号： | 1001-2400(2004)05-0811-04 |
A fair multi-party exchange protocol with the off-line trusted third party |
| |
| LI Yan-ping,ZHANG Jian-zhong.A fair multi-party exchange protocol with the off-line trusted third party[J].Journal of Xidian University,2004,31(5):811-814. |
| |
| Authors: | LI Yan-ping ZHANG Jian-zhong |
| |
| Affiliation: | (College of Mathematics and Information Science, Shaanxi Normal Univ., Xi'an 710062, China) |
| |
| Abstract: | The difference between the fair exchange protocols and the non-repudiation protocols is proposed. Based on the publicly verifiable secret sharing scheme and group encryption scheme, a new multi-party fair exchagne protocol with an off-line semi-Trusted Third Party(off-STTP) is presented. The off-STTP who need not be completely trusted intervenes into the exchange in case of trouble. That the off-STTP can only decipher a sub-secret key makes sure the confidentiality of exchange data and the true fairness of the barter. The participants can barter with others at their will and the exchange topology is unknown to others including the off-STTP. |
| |
| Keywords: | off-line trusted third party(off-STTP) non-repudiation digital signature |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《西安电子科技大学学报》浏览原始摘要信息 |
|
点击此处可从《西安电子科技大学学报》下载全文 |
