计算机科学 ›› 2009, Vol. 36 ›› Issue (9): 103-105.
• 计算机网络与信息安全 • 上一篇 下一篇
马洁,张元清
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MA Jie , ZHANG Yuan-qing
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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。所有的轮密胡都由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。
关键词: 分组密码，混沌映射，模乘运算，置换
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.
Key words: Block cipher, Chaotic map, Modulo multiplication, Permutation
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. https://doi.org/
MA Jie , ZHANG Yuan-qing. Block Cryptosystem Based on Piecewise Linear Map[J]. Computer Science, 2009, 36(9): 103-105. https://doi.org/
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