| 一种基于分段线性映射的分组密码算法 |
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| 引用本文： | 马洁,张元清.一种基于分段线性映射的分组密码算法[J].计算机科学,2009,36(9):103-105. |
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| 作者姓名： | 马洁 张元清 |
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| 作者单位： | 1. 重庆教育学院美术系,重庆,400067
2. 重庆教育学院计现系,重庆,400067 |
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| 摘 要： | 提出了一种新的基于混沌理论的分组密码算法,把128比特的明文加密为128比特的密文.整个加密过程包含了8个轮变换,每一个轮变换由替换变换、移位变换和置换变换3部分组成.所有的轮密钥都由128位的比特流K和由分段线性映射产生的128比特随机二进制序列导出.理论与实验分析表明该算法克服了一些纯混沌密码系统的固有缺陷,具有较高的性能.
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| 关 键 词： | 分组密码 混沌映射 模乘运算 置换 |
| 收稿时间： | 2008/10/8 0:00:00 |
| 修稿时间： | 2008/12/14 0:00:00 |
Block Cryptosystem Based on Piecewise Linear Map |
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| MA Jie,ZHANG Yuan-qing.Block Cryptosystem Based on Piecewise Linear Map[J].Computer Science,2009,36(9):103-105. |
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| Authors: | MA Jie ZHANG Yuan-qing |
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| Affiliation: | Fine Arts Department of Chongqing Education College;Chongqing 400067;China;Computer Department of Chongqing Education College;China |
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| Abstract: | Based on the study of some existing chaotic encryption algorithms,a new block cipher was proposed.The proposed cipher encrypts 128-bit plaintext to 128-bit ciphertext blocks.It consists of eight computationally identical rounds transformation.All roundkeys are derived from K and a 128-bit pseudorandom binary sequence generated from a chaotic map.Analysis shows that the proposed block cipher does not suffer from the flaws of pure chaotic cryptosystems and possesses high security. |
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| Keywords: | Block cipher Chaotic map Modulo multiplication Permutation |
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