earticle

영어

With recent advances in Internet computing and its growing importance in our day to day life, the need for confidential communication has increased. The falling of sensitive and confidential data such as top intelligence secrets into an enemy nation’s hands can lead to the misuse of technology and destruction of masses. Therefore, researchers have developed techniques such as cryptography and steganography to protect the data being transmitted. Cryptography uses mathematical algorithms to convert the data into an unreadable form and steganography on the other hand hides the data in a carrier such as image, data, audio or video. Both of these algorithms have disadvantages i.e. in case of cryptography the altered text can be easily detected by an intruder while in steganography the distortion of the carrier can attract an adversary. The proposal combines the advantages of both the techniques and provides a study tool for security. It calls for the combination of the two techniques which increases the brute force search time but at the same time ensures that the increase in time complexity of the result and process is within acceptable limits. Moreover this paper depicts a mathematical calculation of the errors in the embedded image with respect to the original image through the calculation of mean square error, peak signal to noise ratio and histogram representations.