Information Hiding
Geetika Dhand
Broschiertes Buch

Information Hiding

watermarking

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Digital Watermarking has its place in security. It is not intended to replace cryptography but supplement it. Hiding a message with watermarking methods reduces the chance of a message being detected. However, if that message is also encrypted, if discovered, it must also be cracked (yet another layer of protection).Fragile watermarking is the embedding of a signal (the watermark) into an image so that modifications to the resulting marked image can be detected with high probability. A fragile marking system is useful in a variety of image authentication applications. By the amount of free and...