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Symmetric key cryptography systems use the same key for both to encrypt the plaintext and to decrypt the ciphertext. Symmetric key systems... -
Cryptography is defined as the art and science of secret writing. The word itself comes from Greek where the words kruptos (κρυπτοσ) and ...
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Policy is basically a written document that lays out the exact requirements or rules that must be met by the employees. It generally...
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What are Blind, Semi-blind and Non-blind Watermarking Systems? Digital watermarking systems can be grouped in three schemes - they are Bli...
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Checking Image Quality Using MATLAB PSNR program PSNR or peak-to-noise ratio is used to evaluate the quality of the watermarked image aft...
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TVA: Threat-Vulnerability-Asset TVA worksheet lists the asset in priority order along one axis and the threats it is exposed to by prio... -
The Security System Development Life Cycle (SecSDLC) is a variant of SDLC which can be used in developing an Information Security Policy. ...
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Find below the Matlab codes to embed a watermark image into a cover(host) image: clear all; close all; clc; [filename1,pathname]=uigetfi...
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The Interesting Story of Lena.jpg The image above is one that has been widely used in the image compression studies, even today. ... -
A ciphertext has the possibility of being broken by using statistical analysis that could provide some information on the frequency of char...