基于DataSocket技术的SMI敏感数据加密方法

Encryption Method for SMI Sensitive Data Based on DataSocket Technology

由于以往加密方法是将所有的图像信息全部加密成密文图像,导致图像信息膨胀,影响了图像信息传输质量。为解决上述问题,研究一种基于DataSocket技术的序列监控图像敏感数据加密方法。方法先是序列监控图像敏感数据压缩处理,减少信息冗余度,具体包括图像分块、颜色空间转换、离散余弦变换、离散余弦变换系数量化以及编码等操作;然后利用混沌系统进行图像加密处理,包括实数混沌序列生成与转换、置乱和扩散等。实验结果表明:对比其它三种方法的加密结果,上述方法应用下信息熵最大,PSNR值较大,说明上述方法既能确保监控图像敏感信息安全,提高了图像的传输质量。

The former encryption method is to encrypt all the image information into ciphertext image,which leads to the expansion of image information and affects the quality of image information transmission.In this regard,this paper studies an encryption method of sensitive data of sequence monitoring image based on DataSocket technology.The sensitive data of sequence monitoring image were compressed to reduce information redundancy;The compression operation includes image segmentation,color space conversion,discrete cosine transformation,quantization and coding of discrete cosine transform coefficients.Based on the chaotic system,the image was encrypted and the encryption process includes the generation and transformation of real chaotic sequence,scrambling and diffusion.The experimental results show that the information entropy and PSNR value of this method are significantly higher than those of traditional methods,indicating that this method has high security of monitoring image sensitive information and image transmission quality.