| 一种消息恢复型数字签名方案的改进 |
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| 引用本文： | 刘杰,李建华.一种消息恢复型数字签名方案的改进[J].计算机工程,2008,34(9):36-38. |
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| 作者姓名： | 刘杰 李建华 |
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| 作者单位： | 上海交通大学电子工程系,上海,200123 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 研究一种消息恢复型数字签名方案，该方案不需要hash函数和消息冗余就能抵抗伪造攻击。讨论已有的攻击方法和一种能够抵抗这些攻击的改进方案。在保持改进方案安全性的基础上，进行进一步的性能优化。在典型参数设置情况下( , )，优化方案的签名长度仅为原先的44%，计算效率提高了61%，传输效率提高了56%。
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| 关 键 词： | 数字签名 消息恢复 伪造攻击 |
| 文章编号： | 1000-3428(2008)09-0036-03 |
| 修稿时间： | 2007年5月10日 |
Improvement on Digital Signature Scheme with Message Recovery |
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| LIU Jie,LI Jian-hua.Improvement on Digital Signature Scheme with Message Recovery[J].Computer Engineering,2008,34(9):36-38. |
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| Authors: | LIU Jie LI Jian-hua |
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| Affiliation: | (Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200123) |
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| Abstract: | This paper investigates a digital signature scheme with message recovery, which is claimed to resist forgery attacks without hash functions and message redundancies. Some attacks and an effective improvement on this scheme are analyzed. A further improvement to shorten the signed signature is presented. The improvement keeps the security properties and makes the scheme more efficient. When and , the improved length of the signed signature is only 44% of the original, which raises computation efficiency by 61% and communication efficiency by 56 %. |
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| Keywords: | digital signature message recovery forgery attack |
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