Taguchi Optimization Method for Testing Best Image Encryption Algorithm

Images, plain text and multimedia files are the core of this era; one of the main challenges is transferring data from source to destination in an encrypted way, so in case a sniffing machine or a sniffing computer can not detect and fetch the original data. This article introduces the Taguchi design of experiments method as an optimization tool to measure the best encryption method of images through calculating SNR, Mean and other critical parameters. The test was done using three cryptographic methods (Advanced Encryption Standard AES128, Deoxyribonucleic Acid DNA, and Secure Force SF) with key (Linear Feedback Shift Register LFSR, Message Digest MD5, and Random number) for each one. After that the encrypted images are applied to Taguchi orthogonal array to measure and calculate the conditional parameters; this method provides the user details of each test. The obtained results of Taguchi experiments prove some facts; the secure force cryptographic method is lightweight and provides better image quality as mentioned in several researches; also, jpg images have better image quality parameters for security purposes as proved in several studies. Keywords: Taguchi Method, Image Quality, Image Encryption, Secure Force, MD5, AES