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A new fragile watermarking algorithm for software configuration management is proposed in this paper. Firstly, the program (cover work) is divided into N groups, and hash function is used respectively to obtain the whole program information. Secondly, the watermark is obtained by combining with program information, author information and time information. The software version index (similar to software...
A new secure fragile watermarking algorithm for secure communication is proposed in this paper, the idea of cryptography- and the idea of side information are introduced into the security domain of watermarking system. The main idea of the algorithm can be listed as follow. Firstly, the original image is segmented into blocks and the watermark is segmented into subsections. Secondly, the embedded...
A new fragile blind watermarking algorithm for content authentication is proposed in this paper. Firstly, the program (cover work) is divided into segments according to the three basic program control structures (sequence, branch and loop). Secondly, the frangibility of watermark is used to mark the variation of the code line, which achieved through using a hash function and generalized character...
We consider the problem of multiterminal source-channel communication where a number of distributed and possibly correlated sources are transmitted through an orthogonal multiple access channel to a common destination. We provide a characterization of the optimal tradeoff between the transmission cost Gamma and the distortion vector D as measured against individual sources. Our approach consists of...
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