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Can someone help me with this in c++ Color Printer Steganography You probably didn't know (I didn't until recently) that most color printers add a
Can someone help me with this in c++
Color Printer Steganography You probably didn't know (I didn't until recently) that most color printers add a "fingerprint" to every page they print. They are not exactly invisible, they are very hard to see, but they are there That fingerprint encodes information like: time, date and serial number of the printer being used. Every page! They typically come as a small matrix of yellow dots (which are hard to see on white paper) which encode the information. The image below shows the actual yellow dots (highly magnified on the left) and a false-color enhancement to better show them. The companies are not exactly forthcoming about the encoding for their printers, but at least one has been decoded. The Xerox DocuColor series. We will write a program that can decode these. Xerox Docucolor Matrix Below is a representations of the DocuColor matrix printed on each sheet, and how they might be interpreted. The fingerprint is a 8 row x 15 column matrix of yellow dots. Note on the drawing that they number columns starting at index 1 (yuck). The first row and first column are special. They represent a property called parity which we will discuss in a moment. Otherwise: columns 2 and 5 represent time (minutes and hours respectively) e columns 6,7, 8 represent a date Color Printer Steganography You probably didn't know (I didn't until recently) that most color printers add a "fingerprint" to every page they print. They are not exactly invisible, they are very hard to see, but they are there That fingerprint encodes information like: time, date and serial number of the printer being used. Every page! They typically come as a small matrix of yellow dots (which are hard to see on white paper) which encode the information. The image below shows the actual yellow dots (highly magnified on the left) and a false-color enhancement to better show them. The companies are not exactly forthcoming about the encoding for their printers, but at least one has been decoded. The Xerox DocuColor series. We will write a program that can decode these. Xerox Docucolor Matrix Below is a representations of the DocuColor matrix printed on each sheet, and how they might be interpreted. The fingerprint is a 8 row x 15 column matrix of yellow dots. Note on the drawing that they number columns starting at index 1 (yuck). The first row and first column are special. They represent a property called parity which we will discuss in a moment. Otherwise: columns 2 and 5 represent time (minutes and hours respectively) e columns 6,7, 8 represent a date
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