Making a message

Each letter typed goes through nine encryption phases before emerging from the machine in its final form. Having so many conversions is what made this machine’s mechanism so difficult to crack. The rotors play a large part in generating random letters. After receiving a letter that has already been changed by the plugboard, the frequent and individual wheel turns make the pattern almost impossible to guess. Each of the three wheels is wired differently, meaning the input letter will match a different output letter on each wheel. As the signal navigates through the three ciphers, it reaches the reflector rotor as a new letter. This would be enough to create a scrambled message, but only half of the coding is done. The reflector has its own cipher and sends the output letter back through the rotors. Then the signal gets a final change at the plugboard before lighting up as its final letter.