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| 一个可验证的秘密共享新个体加入协议 | |
| 引用本文： | 李慧贤,程春田,庞辽军. 一个可验证的秘密共享新个体加入协议[J]. 西安交通大学学报, 2006, 40(2): 207-210 |
| 作者姓名： | 李慧贤 程春田 庞辽军 |
| 作者单位： | 1. 大连理工大学计算机科学与工程系,116024,大连;大连理工大学水利工程信息研究所,116024,大连 2. 大连理工大学水利工程信息研究所,116024,大连 3. 西安电子科技大学综合业务网国家重点实验室,710071,西安 |
| 基金项目： | 中国科学院资助项目;国家重点基础研究发展计划(973计划) |
| 摘 要： | 针对门限秘密共享方案，提出了一个可验证的新个体加入协议．应用指数运算来验证新产生份额的真实性，从而预防系统中可能出现的主动攻击．该协议具有无需信任中心，无需改动原有参与者的份额，仅需t（t为门限）个老成员合作产生新份额，仅需6t次广播等优点．分析与验证表明，该协议是正确的，与现有协议相比，其密钥管理简单，安全性更高，具有良好的可靠性和可用性． |
| 关 键 词： | 秘密共享 新个体 验证 信任中心 |
| 文章编号： | 0253-987X（2006）02-0207-04 |
| 收稿时间： | 2005-04-19 |
| 修稿时间： | 2005-04-19 |
Verifiable Protocol for Member Expansion in Secret Sharing Schemes |
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| Li Huixian,Cheng Chuntian,Pang Liaojun. Verifiable Protocol for Member Expansion in Secret Sharing Schemes[J]. Journal of Xi'an Jiaotong University, 2006, 40(2): 207-210 | |
| Authors: | Li Huixian Cheng Chuntian Pang Liaojun |
| Abstract: | A verifiable protocol for member expansion in the threshold sharing schemes that create n shares of the secret for n participants was proposed.The authenticity of the new share can be verified by using exponential computation,which makes the protocol defend against active adversaries.Without a trusted center and modifying the shares of old participants,the protocol needs that t(t is the threshold) old participants cooperate to generate and to distribute the new share,and there are only 6t times broadcasting.The validity of the proposed protocol was verified.Compared with the existing protocols,the proposed protocol has a higher security and is easier in key management and better in reliability and usability. |
| Keywords: | secret sharing new member verify trusted center |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |