一种基于混沌加密的信息隐藏方法

用Logistic映射生成混沌序列,对文本信息的ASCII码进行加密,产生二进制信息流。将图像进行DCT变换,并用一个量化表对变换后的系数进行量化,将加密后的二进制信息嵌入到图像的DCT系数中以实现信息隐藏,在秘密信息的提取过程中不需要原始图像的参与。实验结果表明,该方法具有较好的隐蔽性,对图像质量影响较小。

An Information Hidden Method with Chaotic Encryption

Chaotic sequence is produced Logistic,carring on the encryption to the text information ASCII code,has binary information flow.On image of DCT transform,set coefficients after transform quantized with a quantization table.The binary message after encrypt to embedding the Discrete Cosine Transform(DCT) coefficients of image realizes the information hidden,extracting the secret information is not need the primitive image to participation.The experimental resuls indicate that this method has good hiding and security,is smaller to the image quality influence.