Cipher feedback mode cryptographic algorithm with gingerbreadman two-dimensional map key generator on digital image
Rosa Andrie Asmara, Ahmad Wali Satria Bahari Johan, Rizky Ardiansyah · 2017
The digital image is a data that has information, which is often needed for maintain and secure while transferred or distributing them. Cryptographic techniques are one of the ways for securing digital image information. Cipher feedback mode algorithm can randomize the pixel values in a digital image, but less sensitive to the key. This causes the information from the digital image is known. So, we need gingerbreadman two-dimensional map algorithm as a key scrambler. The proposed cryptographic algorithm is cipher feedback mode and Gingerbreadman two-dimensional map as a key generator. By using the gingerbread two-dimensional map, encrypted image resistant to key attacks. Cipher feedback mode algorithm encrypts each pixel RGB value of an image. This paper will show the encryption techniques using cipher feedback mode with and without Gingerbreadman two-dimensional map. The results of this experiment are a comparison of the sensitivity of the keys, the comparison between the original image of the image after encryption-decryption, the speed of the process, results after attacking on the image, sending the image using the Number of Pixel Change Rate (NPCR), Unified Average Changing Intensity (UACI), Mean Square Error (MSE) and Peak Signal to Noise Ratio (PSNR).