激光与红外
激光與紅外
격광여홍외
LASER & INFRARED
2014年
1期
103-107
,共5页
Logistic映射%混沌序列%图像分组加密
Logistic映射%混沌序列%圖像分組加密
Logistic영사%혼돈서렬%도상분조가밀
Logistic mapping%chaotic sequence%image grouping encryption
针对图像加密，提出了一种基于Logistic映射和z-映射的图像分组加密算法，该算法在每一轮迭代中，交替使用矩阵置乱、非线性数值替换和数值关联混迭三级操作。经大量实验验证，该算法能够有效抵抗明文攻击、差分攻击、统计分析，密钥空间较大，因而安全性较高，并且加解密速度相当快，适用于数据存储。
針對圖像加密，提齣瞭一種基于Logistic映射和z-映射的圖像分組加密算法，該算法在每一輪迭代中，交替使用矩陣置亂、非線性數值替換和數值關聯混迭三級操作。經大量實驗驗證，該算法能夠有效牴抗明文攻擊、差分攻擊、統計分析，密鑰空間較大，因而安全性較高，併且加解密速度相噹快，適用于數據存儲。
침대도상가밀，제출료일충기우Logistic영사화z-영사적도상분조가밀산법，해산법재매일륜질대중，교체사용구진치란、비선성수치체환화수치관련혼질삼급조작。경대량실험험증，해산법능구유효저항명문공격、차분공격、통계분석，밀약공간교대，인이안전성교고，병차가해밀속도상당쾌，괄용우수거존저。
Aiming at the image encryption,a kind of image grouping encryption algorithm based on logistic mapping and z-mapping is put forward.In each iteration of this algorithm,the matrix scrambling,the nonlinear numerical re-placement and the numeral value iteration are alternately used.By a large number of experimental verification,this al-gorithm can effectively resist plaintext attack,differential attack and statistical analysis,and it has larger key space and higher security,and the speed of encryption and decryption is quite fast,which is suitable for data storage.
