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Relational Database Watermarking Algorithm Based on Comparison Table
Abstract:
To reduce the algorithm complexity and improve performance, comparison table is created, and then encrypted by a randomized ten-bit serial number. Serial number forms the first key named key1, and the encrypted comparison table forms the second key named key2. Watermarking image is transformed into a binary bit stream. By using tuples primary key, key1 and key2, each tuples unique Id is computed. According to the watermarking length, all tuples are divided into different groups. Using tuple Id, by searching the encrypted comparison table, each tuple group can embed one bit information of watermarking. Robustness and security of this algorithm are tested by experiment.
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1800-1804
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Online since:
October 2013
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© 2013 Trans Tech Publications Ltd. All Rights Reserved
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