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Multimedia asymmetric watermarking and encryption

Multimedia asymmetric watermarking and encryption

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© The Institution of Engineering and Technology
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An asymmetric watermarking algorithm is presented, involving a private key for embedding and a public key for detection, joint with a suitable encryption scheme, thus achieving a double security level for digital data protection. A commutative scheme is designed based on linear algebra and on a secret random permutation, allowing both to cipher watermarked data and to mark encrypted data without interfering with the watermark detection process.

Inspec keywords: linear algebra; watermarking; multimedia systems; public key cryptography; private key cryptography

Other keywords: asymmetric watermarking; private key; linear algebra; encryption; double security; digital data protection; secret random permutation; public key; multimedia

Subjects: Cryptography; Linear algebra (numerical analysis); Multimedia; Image and video coding; Speech and audio coding; Computer vision and image processing techniques; Video signal processing; Linear algebra (numerical analysis); Multimedia communications; Data security

References

    1. 1)
    2. 2)
      • S. Lian , Z. Liu , H. Wang . Commutative encryption and watermarking in video compression. IEEE Trans. Circuits Syst. Video Technol. , 6 , 774 - 778
    3. 3)
      • Boato, G., Conotter, V., De Natale, F.G.B., Fontanari, C.: `A joint asymmetric watermarking and image encryption scheme', Proc. IS&T/SPIE Security, Forensics, Steganography, and Watermarking of Multimedia Contents X, January 2008.
    4. 4)
      • Cox, I.J., Doerr, G., Furon, T.: `Watermarking is not cryptography', Proc. Int. Workshop on Digital Watermarking 2006, , p. 1–15, LNCS 4283.
    5. 5)
      • Sadeghi, A.-R.: `The marriage of cryptography and watermarking-beneficial and challenging for secure watermarking and detection', Proc. Int. Workshop on Digital Watermarking 2007, , p. 2–18.
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