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基于伪随机序列的Arnold加密算法
发表时间:2011-04-30 浏览量:1697 下载量:511
全部作者: | 徐光宪,金峻宏 |
作者单位: | 辽宁工程技术大学电子与信息工程学院 |
摘 要: | 提出一种改进的Arnold变换方法。引入伪随机序列(pseudorandom sequence, PN)并利用安全哈希算法(secure Hash algorithm, SHA)产生随机参数序列,将数字图像分块,并对每个块图像分别进行Arnold变换,最终得到一幅置乱图像。该算法有效地增加了密钥量,可以克服通过穷举分析等手段进行的攻击危机,增加了图像的安全性。 |
关 键 词: | 信息论;图像加密;伪随机序列;安全哈希算法1;Arnold变换;矩阵变换 |
Title: | An Arnold encryption algorithm based on PN sequence |
Author: | XU Guangxian, JIN Junhong |
Organization: | School of Electronic Information Engineering, Liaoning Technical University |
Abstract: | This paper presents a modified Arnold method, which uses pseudorandom sequence (PN) sequence and secure Hash algorithm (SHA) to generate a random parameter sequence, then divides an image into pieces and carries out Arnold algorithm to the 4 pieces respectively. The Arnold algorithm effectively increases the number of the keys, and overcomes the attack via the exhaustive analysis, which enhances the security. |
Key words: | information theory; image encryption; pseudorandom sequence; secure Hash algorithm 1; Arnold transformation; matrix transformation |
发表期数: | 2011年4月第8期 |
引用格式: | 徐光宪,金峻宏. 基于伪随机序列的Arnold加密算法[J]. 中国科技论文在线精品论文,2011,4(8):773-778. |

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