invented by the German engineer Arthur Scherbius at the end of World a was (15%) Enigm War 1. Enigma machines were famously adopted by military and government s several countries as encryption devices, most notably Nazi Germany before and during orld War II. Assuming a simple Enigma machine was implemented in the following way Encryption = Message + Cipher where Message is the original BCD digit, which are labeled A, B, C, and D, and each ary 0 or 1. Cipher is a 2's complement digital code, which are labeled w, x, nd each represents a binary 0 or 1. Encryption is the original message plus the cipher code, which are labeled EA, EB, Ec, and Ep, and each represents a binary 0 or 1. To increase the security, the cipher is designed to automatically change as follows when every message is inputted. The + and - signs in both equations represented the arithmetic addition and subtraction. Design a decryption machine with the specific functions in the most represents a bin efficient method. New Cipher = Old Cipher + (A-B + C-D)