CAJ | 학술논문

为了更加有效地保障信息安全,针对低维混沌密码体系和传统LSB的缺点,构建了基于高维Lorenz混沌系统的加密体系,增大了密钥空间.通过理论和实验分析,选择了合适的采样间隔,并利用LSB隐蔽性强的特点,提出了一种基于高维混沌加密的LSB加密体系.理论分析和实验结果表明,该算法可以有效抵御局部线性攻击、相空间重构攻击和熵攻击等,安全性较高,且具有较强的鲁棒性.
위료경가유효지보장신식안전,침대저유혼돈밀마체계화전통LSB적결점,구건료기우고유Lorenz혼돈계통적가밀체계,증대료밀약공간.통과이론화실험분석,선택료합괄적채양간격,병이용LSB은폐성강적특점,제출료일충기우고유혼돈가밀적LSB가밀체계.이론분석화실험결과표명,해산법가이유효저어국부선성공격、상공간중구공격화적공격등,안전성교고,차구유교강적로봉성.
In order to ensure the secure communication,aimed at the defccts of low-dimensional chaotic encryption and classical LSB,the high-dimensional chaotic encryption system is established.The key space is increased.Through the theoretical analysis and experiments,an appropriate sampling interval also is selected.Combined with the good concealment of LSB,a double encryption algorithm is proposed based on LSB and chaotic Lorenz system.The results indicate that the algorithm resist the local linear attack,phase space reconstruction attack and entropy attack.It has high security and robustness.