Digital Watermarking And Encryption Technology Research Based On Fingerprint

As the fast development of network technology and multimedia technology, multimedia data gradually becomes the important source that people obtain information from. Therefore, the security of multimedia information becomes a hot topic worldwide.Digital watermarking and encryption technology provide a good solution for the problem.Digital watermarking and encryption technology based on fingerprint are studied in this paper.With the analysis of current watermarking algorithms and combination of bio-identification technology, a digital watermarking system with insertion and extraction is realized. In this system, the owner's fingerprint can be embedded into the multimedia data that requires being protected. The owners'rights could be protected through extracting the embedded fingerprint when there is a dissension of copyright. The algorithm shows a good stability and robustness during the test, and has a good useness prospect during different situations.To protect the multimedia data, a mixed encryption algorithm together with two advanced cryptography-DES (Data Encryption Standard) and Blowfish based on fingerprint watermark is studied.In this algorithm, the fingerprint data of people is embedded into the encrypted data. The encryption method is of higher safe level and easy to use.An encryption algorithm for PE file, the critical file of Windows system,based on fingerprint data is studied. More than these, the PE file of Windows system gets a higher safe level through the algorithm.