Research Of Batch Steganography Based On Epidemic Model

The popularity and rapid development of Internet technology, all aspects of multimedia, business-government, industrial control, social and economic life are presented with information and digitized. However, the security of information transmission has been the focus of worldwide attention and research hotspot, its role has been irreplaceable.Information hiding as a new frontier disciplines, is one of the hotspots of international academic community. Research and applications focused on watermark copyright, network communications, security, data tampering with evidence, notes anti-counterfeiting, digital sharing and information privacy, etc. The technique is hidden valuable information in public digital media, and an important way to concealed transmission and distributed storage.Since the rise of discipline research, has made remarkable achievements, and to be a new force in the field of information security.Steganography is the practical application of research and development communications technology, and closely integrated with cryptographic techniques. Information security related technologies in field of comprehensive development in the depth, breadth, and professional degrees above. In this paper, the study single carrier information hiding model on basis, combined with characteristics of information hiding, steganographic capacity in research-based multi-carrier digital image information hiding model, and based on security and others, LSB combined with carrier sharing steganography, depth study of normalized image based steganographic capacity and safety, build a digital image sharing Zero-steganography model, makes the hiding capacity carrier more flexible, covert communications security has been greatly improved. On this basis, research combined with the spread of epidemics、the dynamics of cellular automata and complex network of grid nodes in the system for digital image,proposed sharing images model based on the spread of epidemic. The paper research work is organized as follows:(1) Multi-carrier information sharing steganographic system, to solve the single-carrier steganography smaller capacity, lower security, weaker robustness of limitations, given a full demonstration from theoretical analysis and experimental verification. Which have good comprehensive performance.(2) Sharing ideas and research multi-carrier information hidden in DCT domain image transformation, Bernstein polynomial, Frobenious problems, Matrix multiplication secret-key sharing, Chinese remainder theorem and Rabin cryptosystem image sharing. The paper presents a general point of view from the airspace LSB steganography capacity normalized. Analysis showed that based on the key matrix, the algorithm is efficacy and safety, suitable for multi-carrier hiding communication systems.(3) Preparations according to (2), combined with Frobenius problems to achieve image sharing, using two-dimensional DCT domain transform the use of secret information pretreated (3), and establish a zero-steganographic model for carrier images sharing. Performance analysis and experimental verification of the model, achieving a combination of digital image sharing with steganography algorithms, and achieve hidden capacity operability and flexibility, greatly enhance the covert communications security and fidelity.(4) Described the basic principles of epidemics model, the characteristic of cellular automaton, grid nodes and the node has a self-multiply complex correlation between the characteristics of analyzed network,the theoretical methods suitable for processing of images. Combined with multi-carrier image steganography LSB sharing, the digital image pixel gray levels of correlation, analyzes based on pixel block of LSB sharing steganography, according to propagation model of epidemic, build epidemic propagation characteristics of multi-carrier theoretical models.