Hasimoto-Beltrán Rogelio
Center for Research in Mathematics (CIMAT), Jalisco s/n, Col. Mineral de Valenciana, Guanajuato, Gto, Mexico.
Chaos. 2008 Jun;18(2):023110. doi: 10.1063/1.2903758.
Current chaotic encryption systems in the literature do not fulfill security and performance demands for real-time multimedia communications. To satisfy these demands, we propose a generalized symmetric cryptosystem based on N independently iterated chaotic maps (N-map array) periodically perturbed with a three-level perturbation scheme and a double feedback (global and local) to increase the system's robustness to attacks. The first- and second-level perturbations make cryptosystem extremely sensitive to changes in the plaintext data since the system's output itself (ciphertext global feedback) is used in the perturbation process. Third-level perturbation is a system reset, in which the system-key and chaotic maps are replaced for totally new values. An analysis of the proposed scheme regarding its vulnerability to attacks, statistical properties, and implementation performance is presented. To the best of our knowledge we provide a secure cryptosystem with one of the highest levels of performance for real-time multimedia communications.
文献中当前的混沌加密系统无法满足实时多媒体通信的安全性和性能要求。为了满足这些要求，我们提出了一种基于N个独立迭代混沌映射（N映射阵列）的广义对称密码系统，该系统采用三级扰动方案和双重反馈（全局和局部）进行周期性扰动，以提高系统对攻击的鲁棒性。第一级和第二级扰动使密码系统对明文数据的变化极其敏感，因为系统输出本身（密文全局反馈）被用于扰动过程。第三级扰动是系统重置，其中系统密钥和混沌映射被替换为全新的值。对所提方案的攻击脆弱性、统计特性和实现性能进行了分析。据我们所知，我们提供了一种为实时多媒体通信提供最高性能水平之一的安全密码系统。
