文章基本信息

标题：Statistical Steganalysis Scheme of Using Block DCT
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作者：Papiya Chakraborty ; Dr. Bikramjit Sarkar
期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2014
卷号：5
期号：3
页码：3611-3615
出版社：TechScience Publications
摘要：Steganalysis is the process of cracking to identifying steganography by scrutinizing different Statistical parameter of a stego media. First of all a mathematical analysis may disclose statistical discrepancy in the stego medium. After that steganalysis process determines whether that media contains hidden message or not and then try to recover the message from it. The information hiding process changes the statistical properties of the cover, which is a steganalyst attempts to detect is called statistical steganalysis. The enormous growth in public domain channels and communication technology (i.e. Internet) has greatly facilitated transfer of huge data. However, such open network channels have better susceptibility to security threats causing illegal information access. In this case both steganography and steganalysis have received a great deal of awareness from law enforcement and the media. Some promising methods for universal steganalysis with respect to features and arrangement procedure have also been recognized. In my research work I want to develop an image based steganalysis that combines Discrete Cosine Transform (DCT), and compression techniques with LSB techniques on any raw image. Initially the cover-image is transformed from spatial domain to the frequency domain using DCT. The image is then quantized. and LSB technique is used to insert in pixels specified according to a range.The goal of this paper is to construct a new still JPEG steganalyzer with the help of DCT quantizer with markedly improved statistical performance
关键词：Steganography; Steganalysis; Stego-system;DCT; LSB; quantizer; frequency domain