enigma machine Algorithm
The security of the system depends on Enigma machine settings that were changed daily, based on secret key lists distributed in advance, and on other settings that change for each message. Many commentators say the flow of communications intelligence from Ultra's decryption of Enigma, Lorenz and other ciphers shortened the war significantly and may even have changed its consequence.
Early models were used commercially from the early 1920s, and adopted by military and government services of several nation, most notably Nazi Germany before and during universe War II.Several different Enigma models were produced, but the German military models, have a plugboard, were the most complex. The German firm Scherbius & Ritter, co-established by Arthur Scherbius, patented ideas for a cipher machine in 1918 and begin marketing the finished merchandise under the brand name Enigma in 1923, initially targeted at commercial markets. Enigma was invented by the German engineer Arthur Scherbius at the end of universe War I.
alphabets = [chr(i) for i in range(32, 126)]
gear_one = [i for i in range(len(alphabets))]
gear_two = [i for i in range(len(alphabets))]
gear_three = [i for i in range(len(alphabets))]
reflector = [i for i in reversed(range(len(alphabets)))]
code = []
gear_one_pos = gear_two_pos = gear_three_pos = 0
def rotator():
global gear_one_pos
global gear_two_pos
global gear_three_pos
i = gear_one[0]
gear_one.append(i)
del gear_one[0]
gear_one_pos += 1
if gear_one_pos % int(len(alphabets)) == 0:
i = gear_two[0]
gear_two.append(i)
del gear_two[0]
gear_two_pos += 1
if gear_two_pos % int(len(alphabets)) == 0:
i = gear_three[0]
gear_three.append(i)
del gear_three[0]
gear_three_pos += 1
def engine(input_character):
target = alphabets.index(input_character)
target = gear_one[target]
target = gear_two[target]
target = gear_three[target]
target = reflector[target]
target = gear_three.index(target)
target = gear_two.index(target)
target = gear_one.index(target)
code.append(alphabets[target])
rotator()
if __name__ == "__main__":
decode = input("Type your message:\n")
decode = list(decode)
while True:
try:
token = int(input("Please set token:(must be only digits)\n"))
break
except Exception as error:
print(error)
for i in range(token):
rotator()
for i in decode:
engine(i)
print("\n" + "".join(code))
print(
f"\nYour Token is {token} please write it down.\nIf you want to decode "
f"this message again you should input same digits as token!"
)
