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| 一个前向安全盲签名方案的分析与改进 | |
| 引用本文： | 孙芳,张雪峰,袁小转.一个前向安全盲签名方案的分析与改进[J].信阳师范学院学报(自然科学版),2014(3):444-446. |
| 作者姓名： | 孙芳 张雪峰 袁小转 |
| 作者单位： | 1. 信阳师范学院 计算机与信息技术学院,河南信阳,464000 2. 信阳农林学院 计算机科学系,河南信阳,464000 3. 信阳师范学院 数学与信息科学学院,河南信阳,464000 |
| 基金项目： | 国家自然科学基金项目(61272465)；河南省自然科学基金项目 |
| 摘 要： | 对何俊杰等人提出的基于二次剩余的前向安全盲签名方案进行安全性分析,指出方案不满足前向安全性,并提出了一种改进方案.分析结果表明,在二次剩余的平方根计算和2l次根计算困难的假设下,改进方案具有前向安全性;其不可伪造性则依赖于离散对数难题和二次剩余的2l次根计算难题. |
| 关 键 词： | 盲签名 前向安全性 二次剩余 离散对数 |
Cryptanalysis and Improvement of a Forward-Secure Blind Signature Scheme |
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| Sun Fang,Zhang Xuefeng,Yuan Xiaozhuan.Cryptanalysis and Improvement of a Forward-Secure Blind Signature Scheme[J].Journal of Xinyang Teachers College(Natural Science Edition),2014(3):444-446. | |
| Authors: | Sun Fang Zhang Xuefeng Yuan Xiaozhuan |
| Institution: | Sun Fang;Zhang Xuefeng;Yuan Xiaozhuan;College of Computer and Information TechnologyXinyang Normal University;Department of Computer Science,Xinyang College of Agriculture and Forestry;College of Mathematics and Information Science,Xinyang Normal University; |
| Abstract: | Cryptanalysis of the forward-secure blind signature scheme proposed by He Junjie et al. showed that the scheme does not satisfy forward security. An improved forward-secure blind signature scheme was proposed. Analysis results showed that the improved scheme has forward security under the assumption which make solving the square root and 2l-th root of a quadratic residue hard,and its unforgeability dependends on the hardness of discrete logarithm problems and the problems of computing 2l-th root of a quadratic residue. |
| Keywords: | blind signature forward security quadratic residue discrete logarithm |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |