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You just want to make a software that can watermark numeric datasets through pattern generation technique but you don't have any idea what types of patterns can be generated for numeric datasets?
Wiki User
∙ 11y ago
I don't believe this to be possible. Watermarking a data set intrinsically alters the data such that the original data cannot be recovered without knowing what the original data set was, or what pattern generated the data set. Knowing either of these would defeat the purpose of watermarking.
Watermarking is commonly used in steganography, a technique used to encrypt a payload (the watermark) within an image (the carrier). However the image is altered in such a way that while the payload can be extracted with suitable software, the original image cannot be reconstructed.
For example, the steganographer may take a 24-bit image and adjust the least significant bit of all the blue elements (every 3rd byte) to embed the watermark. An image containing 1,000 pixels could therefore be used to encrypt a 1000-bit watermark. This means that some or all of the blue elements will be changed, however the changes are so slight that anyone viewing the image is unlikely to notice the difference without having access to the original image (which they won't since that is the image the watermark is intended to protect). The payload is therefore hidden in plain sight. Even if the payload is detected and altered, it is unlikely those alterations will reproduce the original image, thus making it obvious the watermark has been tampered with. Obfuscating the payload with compression wouldn't alter the fact you retained copyright over the original uncompressed, non-watermark image, which the tamperer will not, thus proving your ownership of the original image.
But doing the same with a data pattern, perhaps be altering the least significant bit of every 3rd byte, will intrinsically alter the pattern thus making it obvious there is a payload present (because the pattern is destroyed) but ultimately rendering the data set itself completely useless because the pattern is no longer recoverable.
Wiki User
∙ 11y ago
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