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Research on covert channel based on blog service

Author: ZhangSuYing
Tutor: LanShaoHua; WangZuo
School: Nanjing University of Technology and Engineering
Course: Computer technology
Keywords: Covert Channel Blog Marked Text Text Hidden
CLC: TP393.092
Type: Master's thesis
Year: 2012
Downloads: 2
Quote: 0
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Currently, the blog is a very common type of network information release platform, everyone can apply for blog account and open. Blog’s content is very rich, including text, pictures, videos, etc., the content of these different forms of covert channels can be used as the carrier. The blog service as a carrier for covert channel approach to building research, including the following:1, the principle of covert channels, Research, research has been made for a more in-depth analysis and discussion to explain the research background and significance. The characteristics of blog discussions, focusing on building a covert blog service based on the feasibility and reliability of the channel.2, research-based blog service covert channel transmission of a variety of methods. Discussion of the basic processes, and shortcomings of LSB algorithm, using the human eye for different color components of the sensitivity of different and random sequence generation method was carried out improvements to enhance the covert channel capacity, enhance its anti-attack performance, designed to improve the use of The LSB of the digital image-based algorithm method of constructing covert channel.3, the blog-based streaming media services to build covert channels have been studied, analyzed based on audio and video covert channel build process, given the system hierarchy, and each layer of the key technology research and design the use of LSB algorithm in the audio stream in the process of building a covert channels and methods.4, focused on the format of text information hiding methods, to build XML-based covert channel. Build three new markup language-based approach to building the hidden information, namely the use of markup language attribute and child elements of the equivalence of multiple sub-elements representation, adding redundancy in the tag method attribute information to achieve a Construction of the covert channel, and blog services page is based on building these markup languages, therefore, these methods can be used for blog service covert channel build.5, the use of specific programming language used to achieve a blog-based information services, covert channel transmission system. Implementation of the system is mainly used to provide digital imaging services blog, streaming media services, and format text service to achieve a variety of ways to build covert channels, the concrete realization of the various functional modules, gives the core code, and system processing power for real the testing and analysis. Test results show that the blog service based covert channel system has a certain imperceptibility, high capacity of information hiding.

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