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Cover medium (Wrapper)

The medium in which we want to hide data; it can be an innocent looking piece of information for steganography, or an important medium that must be protected for copyright or integrity reasons.


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A law that establishes the prohibition of attempts to circumvent copyright protection mechanisms placed on a protected work by the copyright holder and limits the liability of Internet service providers when their circuits are used by criminals violating the copyright law.
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(1) The method of concealing the existence of a message or data within seemingly innocent covers. (2) A technology used to embed information in audio and graphical material. The audio and graphical materials appear unaltered until a steganography tool is used to reveal the hidden message. The act of embedding messages within another message, commonly used within an image or a WAV file.
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A substitution method of steganography where the right most bit in a binary notation is replaced with a bit from the embedded message. This method provides “security through obscurity,” a technique that can be rendered useless if an attacker knows the technique is being used.
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The method of steganography where a secret is embedded in a harmless message. See also jargon code.
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The method of steganography where a tool, device, or method is used to conceal a message. Examples are invisible inks and microdots.
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