计算机应用研究2011，Vol.28Issue(11)：4335-4337,3.DOI:10.3969/j.issn.1001-3695.2011.11.090
对超混沌系统的图像加密算法安全性的改进
Security improvement for image encryption algorithm based on hyper-chaos system
摘要
Abstract
For the security defects of the cryptosystem based on hyper chaos proposed by Gao et al, an this paper proposed an improved encryption algorithm while chaotic sequences generated from the hyper-chaos system were employed to encrypt each pixel in different ways. Simulation experiments demonstrate the modified cryptosystem has an excellent performance and high encryption efficiency. It maintains all the advantages of the original one and conquers the potential flaws which can not resist chosen-plaintext attack and chosen-cipher text attack. Hence, the proposed encryption algorithm can achieve satisfactory performance with higher security.关键词
超混沌系统/图像加密/密钥流/选择明文攻击/选择密文攻击Key words
hyper-chaos system/ image encryption/ cipher stream/ chosen-plaintext attack/ chosen-cipher text attack分类
信息技术与安全科学引用本文复制引用
李玲,王伟男,李津杰..对超混沌系统的图像加密算法安全性的改进[J].计算机应用研究,2011,28(11):4335-4337,3.基金项目
重庆市教委科研基金资助项目(KJ100505) （KJ100505）
重庆邮电大学自然科学基金资助目 (A2009-31) （A2009-31）
