| 一种可自更新Hash链机制 |
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| 引用本文： | 张浩军,祝跃飞. 一种可自更新Hash链机制[J]. 武汉大学学报(理学版), 2006, 52(5): 596-599 |
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| 作者姓名： | 张浩军 祝跃飞 |
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| 作者单位： | 1. 河南工业大学,计算机工程系,河南,郑州,450052
2. 信息工程大学,网络工程系,河南,郑州,450002 |
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| 基金项目： | 国家自然科学基金;河南省科技攻关项目;河南工业大学校科研和教改项目 |
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| 摘 要： | 针对Hash链应用中有限长度的限制，提出了一种“肩扛式”自更新Hash链机制（SRHC）．所提机制具有传统Hash链应用特性的同时，使用基于单向Hash函数的一次签名技术，实现更新Hash链验证锚的平滑、安全的传递，完成Hash链的自更新．证明了所提出机制的安全性完全且只依赖于所配置的Hash函数的安全性．与目前Hash链机制相比，该机制实现了有效、平滑、安全的自更新，同时还有细粒度鉴别、前摄更新等增强安全属性．
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| 关 键 词： | Hash链 自更新 一次签名 鉴别 前摄更新 |
| 文章编号： | 1671-8836(2006)05-0596-04 |
| 修稿时间： | 2006-04-30 |
A Self-Renewable Hash Chain Scheme |
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| ZHANG Haojun,ZHU Yuefei. A Self-Renewable Hash Chain Scheme[J]. JOurnal of Wuhan University:Natural Science Edition, 2006, 52(5): 596-599 |
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| Authors: | ZHANG Haojun ZHU Yuefei |
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| Abstract: | The finite length of Hash chain limits its applications.Based on one time signature(OTS) technique,a scheme of self-renewable Hash chain(SRHC) is proposed.The proposed scheme not has the whole properties of conventional Hash chains but also renews itself periodically in a secure and smooth way via securely delivering bits of next verification anchor using OTS.A proof is stated to show that SRHC is secure and its security completely relies on the Hash function deployed.Compared with conventional Hash chains,SRHC renews itself efficiently,smoothly and securely and has some enforced security properties such as finer granularity authentication and proactive recovery. |
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| Keywords: | Hash chain self-renewal one-time signature authentication proactive recovery |
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