Title: Data encrypting method and system
Application Number: 200410000378 Application Date: 2004.01.09
Publication Number: 1641716 Publication Date: 2005.07.20
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G09C1/00,G06F7/00
Applicant(s) Name: Information Industry Promotion Council Address:
Inventor(s) Name: Jiang Yuelin, Zhang Luping
Attorney & Agent: wang yibin
Abstract:
     The invention relates to a data encrypt method. The first is that utilizing one Chinese word broken method to break the article content, judging the part of speech and labeling it. Then, article encrypt information is generated, including transforming the watermark information to bit string, and according to a prime number a quadratic residue list is generated to use as the judgment standard to select the encrypt information. The next is to select the word needed encrypt and its synonym, sift the word which are unfitted to the embedding watermark according to the correlative word sifting regular. Then the synonym is replaced. After the word fitted to embedding watermark is found out, the watermark bit string, which is use one bit as the unit, orderly embedded into the selected work. Finally, the embedding watermark information cryptograph is generated after the above steps are finished.
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