图像加密，利用二维的logistics的对图像进行置乱、扩散操作，达到加密解密的目的
资源文件列表
CollativedCode/32.jpg , 55298
CollativedCode/aerial2.jpg , 263375
CollativedCode/Demo.m , 4349
CollativedCode/hedgebw.jpg , 14870
CollativedCode/ImageCipher.m , 6812
CollativedCode/nature8.jpg , 4269
CollativedCode/nistdata.txt , 5012624
CollativedCode/TimeAnalysis.m , 292