说明：  matlab 隐写和隐写分析代码 由LFSR生成密钥的函数~可以实现正向隐写与逆向隐写分析 估计嵌入率 ~注解详细
(matlab steganography and steganalysis forward steganography reverse function to generate a key code plus LFSR the steganalysis estimated embedding rate to comments in detail)