| 基于二次剩余理论的新概率密码的研究 |
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| 引用本文： | 张海,余玛俐.基于二次剩余理论的新概率密码的研究[J].微计算机信息,2010(6). |
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| 作者姓名： | 张海 余玛俐 |
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| 作者单位： | 九江学院信息科学与技术学院; |
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| 摘 要： | BG概率密码虽然是不确定型的公钥密码体制,但是具有数据膨胀率高、无数字签名等特点。在研究和总结这些特点后,基于二次剩余理论,提出了一种新的解决方案。新算法改进了现有概率密码,使数据膨胀率降至1+(k-1)/t,并实现了数字签名。
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| 关 键 词： | 公钥密码 概率密码 二次剩余 密文膨胀率 数字签名 |
Research of A New Probabilistic Cryptosystem Based on Quadratic Residue |
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| ZHANG Hai YU Ma-li.Research of A New Probabilistic Cryptosystem Based on Quadratic Residue[J].Control & Automation,2010(6). |
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| Authors: | ZHANG Hai YU Ma-li |
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| Affiliation: | ZHANG Hai YU Ma-li(School of Computer Science , Technology,Jiujiang University,Jiujiang 332005,China) |
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| Abstract: | Although BG cryptosystem is an uncertainty public-key cryptosystem,it features high message expansion and no digital signature.A new cryptosystem are introduced based on quadratic residue.The new algorithm improves the original encryption scheme to decrease the message expansion to 1+(k-1)/t and realize the digital signature. |
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| Keywords: | public-key cryptology probabilistic cryptosystem quadratic residue message expansion digital signature |
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