Information hiding techniques for steganography and digital by Stefan Katzenbeisser, Fabien, A.P. Petitcolas

By Stefan Katzenbeisser, Fabien, A.P. Petitcolas

A radical evaluate of steganography, the background of this formerly ignored component to cryptography, an outline of attainable functions, and a survey of equipment you should use to conceal details in smooth media. DLC: Cryptography.

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Extra resources for Information hiding techniques for steganography and digital watermarking

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This task can be formalized as a statistical hypothesis-testing problem. Therefore, Wendy defines a test function ƒ : C → {0, 1}: which Wendy uses to classify covers as they are passed on via the insecure channel. In some cases Wendy will correctly classify the cover, in other cases she will not detect a hidden message, making a type-II error. It is also possible that Wendy falsely detects a hidden message in a cover which does not contain information; she then makes a type-I error. Practical steganography systems try to maximize the probability β that a passive attacker makes a type-II error.

Some researchers propose public cover databases. Since an attacker who has access to the original version of a cover can easily detect the secret, the sender chooses one element c out of the database and performs some modifications to get a cover c′. He then uses this new cover for secret communication. This method, however, is not free of dangers. , the cover without the secret information) himself and break the communication. Even if he does not know the techniques which have been applied, he could create a similar cover by comparing c to the stego-object.

2, Feb. 1994, pp. 517–524. , V. Risca, and C. Bancroft, "Hiding Messages in DNA Microdots," Nature, vol. 399, 10 Jun. 1999, pp. 533–534. com/>, 1997. , and N. Johnson, "Broadcast Monitoring: a Practical Application of Audio Watermarking," Announced for publication in Proceedings of the SPIE 3657, Security and Watermarking of Multimedia Contents but withdrawn. Presented at the conference. , "ICE (Identification Coding, Embedded)," Preprint 3516 (D2–3) of the Page 14 Audio Engineering Society, 1993.

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