面向社交网络的图片信息隐藏方法与实现

Image Information Hiding Method and Implementation for Social Network

文章针对隐写图片上传到社交网络前经过变换处理会丢失秘密信息的问题,提出一种在图片信息中安全隐藏秘密信息的方法。该方法首先将JPEG图片进行不完全解码;然后在离散余弦变换和JSteg隐写的基础上改进JSteg算法,将秘密信息嵌入解码信息中;最后经过重新编码生成新的JPEG图片,并将其上传至社交网络。文章基于该方法设计并实现了一种对图片进行信息隐藏的原型系统,经过该系统的处理,上传到社交网络的图片能够被下载,并且可以通过特定的解密方法还原秘密信息,从而达到将秘密信息安全隐藏到图片的目的。

In order to solve the problem that the hidden image through transforai processing wil l lose secret inforaiation before uploaded to social network, this paper proposes a novel scheme that hides secret information securely into images. In the scheme, firstly, JPEG images are decoded incompletely. Then, JSteg algorithm is improved based on discrete cosine transforai and JSteg steganography techniqu^which secret inforaiation is embedded into decoding inforaiation. Finalty, the recoded JPEG images are uploaded to social network. This paper designs and implements a protot}^pe s}^stem that hides information into images b}^ using the scheme. After the processing of the system, the image uploaded to social network can be downloaded, and the encoded secret information can be decoded through a specified deception technique, so as to achieve the purpose of hiding secret information to the image.