def test_method(self):
message1 = 'the quick brown fox lept over the lazy dog'
e_message = 'xcrxxtehadxhuxwoeoxxygtqkoflxrezoeibnxpvtlxx'
ee_message = 'rhuotloxxxaxxqxepxxdwxkrivxxtxoyoebtcehegfznl'
dmessage = 'thexquickxbrownxfoxxleptxoverxthexlazyxdogxx'
key11 = 'king'
key12 = 'queen'
assert(transposition.encrypt(message1, key11, None) == e_message)
assert(transposition.decrypt(e_message, key11, None) == dmessage)
assert(transposition.encrypt(message1, key11, key12) == ee_message)
assert(transposition.decrypt(ee_message, key11, key12) == dmessage)
def main():
random.seed(42)
# test 20 times
for i in range(20):
# The message will have a random length:
message = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' * random.randint(4, 40)
# Convert the message string to a list to shuffle it.
message = list(message)
random.shuffle(message)
message = ''.join(message) # convert list to string
print('Test #%s: "%s..."' % (i+1, message[:50]))
# Check all possible keys for each message.
for key in range(1, len(message)):
encrypted = transposition.encrypt(message, key)
decrypted = transposition.decrypt(encrypted, key)
if message != decrypted:
print('Mismatch with key %s and message %s.' % (key, message))
print(decrypted)
sys.exit()
print('Transposition cipher test passed.')
def hackTransposition(message):
print('Hacking...')
# Brute force time!
for key in range(1, len(message)):
print('Trying key #%s..' % (key))
decryptedText = transposition.decrypt(message, key)
if detectEnglish.isEnglish(decryptedText):
print('\nPossible encryption hack:')
print('Key %s: "%s"' % (key, decryptedText[:50]))
response = raw_input('Enter D for done, or ENTER to continue: ')
if response == 'D':
return decryptedText
# If loop finishes
return None
def main():
for i in range(10): # Amount of tests
string = random_string()
key = random.randint(1, 50)
print('Test #%s: String: "%s.." Key: %s' % (i + 1, string[:50], key))
encrypted = transposition.encrypt(string, key)
decrypted = transposition.decrypt(encrypted, key)
# If decrypted message is not the same as original
if string != decrypted:
print('ERROR: Decrypted: "%s" Key: %s' % (decrypted, key))
sys.exit()
print('Transposition cipher test passed.')
def main():
for i in range(10): # Amount of tests
string = random_string()
key = random.randint(1, 50)
print ('Test #%s: String: "%s.." Key: %s' % (i + 1, string[:50], key))
encrypted = transposition.encrypt(string, key)
decrypted = transposition.decrypt(encrypted, key)
# If decrypted message is not the same as original
if string != decrypted:
print('ERROR: Decrypted: "%s" Key: %s' % (decrypted, key))
sys.exit()
print('Transposition cipher test passed.')
def hackTransposition(message):
print('Hacking...')
# Brute force time!
for key in range(1, len(message)):
print('Trying key #%s..' % (key))
decryptedText = transposition.decrypt(message, key)
if detectEnglish.isEnglish(decryptedText):
print('\nPossible encryption hack:')
print('Key %s: "%s"' % (key, decryptedText[:50]))
response = raw_input('Enter D for done, or ENTER to continue: ')
if response == 'D':
return decryptedText
# If loop finishes
return None
from transposition import decrypt
msg = "aeeeiywvyhhil nnoiicoevwagdtuloh reasusarllokeay y i epn dsi uncbnaoys fwpioettwogc h nd hsusotomgeap hdh a swwlk"
for x in range(1,len(msg)):
print("Trying key #{}: {}".format(x,decrypt(x,msg)[:55]+"..."))
from transposition import decrypt
from detectEnglish import is_english
msg = "aeeeiywvyhhil nnoiicoevwagdtuloh reasusarllokeay y i epn dsi uncbnaoys fwpioettwogc h nd hsusotomgeap hdh a swwlk"
for key in range(1,len(msg)):
decryption = decrypt(key,msg)
print("Trying key #{}: {}".format(key,decryption[:55]+"..."))
if is_english(decryption):
choice = input("Found potential solution with key {}, enter 'X' to exit or just press Enter to continue: ".format(key))
if choice.upper() == 'X':
print("Ending. The selected key is {}".format(key))
print("The selected solution is: \n{}".format(decryption))
break
def test_file_roundtrip(filename, key):
original = Path(filename).read_text()
round_trip = decrypt(encrypt(original, key), key)
assert original == round_trip
def test_decrypt(message, key, expected):
assert decrypt(message, key) == expected
import transposition
#highscore
high = 0
correct_key = 2
#reads secret.txt
fileObj = open("secret.txt", "r")
ciphertext = fileObj.read()
for key in range(2, len(ciphertext)):
message = transposition.decrypt(key, ciphertext)
score = theseconddetectenglish.getEnglishCount(message)
if score > high:
high = score
correct_key = key
print("Key", key, "of", len(ciphertext), ":", score)
decrypted = transposition.decrypt(correct_key, ciphertext)
fileObj = open("secret.decrypted.txt", "w")
def hack(message):
for key in range(1, len(message)):
decrypted_text = decrypt(message, key)
if is_english(decrypted_text):
return decrypted_text, key
def main():
answer = input(
'Would you like to perform a cipher operation? Enter y/n.\n')
while answer.lower() == 'y':
print('1.) Caesar Cipher')
print('2.) Transposition Cipher')
print('3.) Classic Vigenere Cipher')
print('4.) Modified Vigenere Cipher')
print('5.) View Modified Vigenere Keys')
print('0.) Exit')
cipherChoice = input('Enter an option 0-5.\n')
while not ((cipherChoice).isdigit() and int(cipherChoice) >= 0
and int(cipherChoice) <= 5):
cipherChoice = str(
input('\nInvalid entry. Enter an integer from 0-5.\n'))
print('Your choice was', cipherChoice)
cipherChoice = int(cipherChoice)
if cipherChoice != 0 and cipherChoice != 5:
mode = input('Would you like to encrypt or decrypt? Enter e/d.\n')
while not (mode.lower() == 'e' or mode.lower() == 'd'):
mode = input(
'Invalid entry. Enter e to encrypt or d to decrypt.\n')
if cipherChoice == 1:
print('Caesar Cipher:')
n = input('Enter the shift value n:\n')
while not n.isdigit():
n = input('Enter a valid integer.\n')
n = int(n)
if mode == 'd':
ciphertext = input('Enter the ciphertext.\n')
plaintext = (caesar.decrypt(n, ciphertext))
print('Ciphertext:\n', ciphertext)
print('Plaintext:\n', plaintext)
elif mode == 'e':
plaintext = input('Enter the plaintext.\n')
ciphertext = (caesar.encrypt(n, plaintext))
print('Plaintext:\n', plaintext)
print('Ciphertext:\n', ciphertext)
elif cipherChoice == 2:
print('Transposition Cipher:')
key = input('Enter an integer key\n')
while not key.isdigit():
key = input('Key must be an integer.\n')
key = int(key)
if mode == 'd':
ciphertext = input('Enter the ciphertext.\n')
plaintext = trans.decrypt(key, ciphertext)
print('Ciphertext:\n', ciphertext)
print('Plaintext:\n', plaintext)
elif mode == 'e':
plaintext = input('Enter the plaintext.\n')
ciphertext = trans.encrypt(key, plaintext)
print('Plaintext:\n', plaintext)
print('Ciphertext:\n', ciphertext)
elif cipherChoice == 3:
print('Classic Vigenere Cipher:')
key = input('Enter a key:\n')
if mode == 'd':
ciphertext = input('Enter the ciphertext.\n')
plaintext = vig.decrypt(ciphertext, key)
print('Ciphertext:\n', ciphertext)
print('Plaintext:\n', plaintext)
elif mode == 'e':
plaintext = input('Enter the plaintext.\n')
ciphertext = vig.encrypt(plaintext, key)
print('Plaintext:\n', plaintext)
print('Ciphertext:\n', ciphertext)
elif cipherChoice == 4:
print('Modified Vigenere Cipher:')
seed = input('Enter a positive seed value:\n')
while not seed.isdigit():
seed = input('Error, seed value must be a positive integer.\n')
while int(seed) <= 0:
print(
'Error, seed value must be positive. Exiting to main menu.'
)
break
seed = int(seed)
key = input('Enter a key:\n')
if mode == 'd':
ciphertext = input('Enter the ciphertext.\n')
plaintext = mvig.decrypt(ciphertext, key, seed)
print('Ciphertext:\n', ciphertext)
print('Plaintext:\n', plaintext)
elif mode == 'e':
plaintext = input('Enter the plaintext.\n')
ciphertext = mvig.encrypt(plaintext, key, seed)
print('Plaintext:\n', plaintext)
print('Ciphertext:\n', ciphertext)
elif cipherChoice == 5:
print('Modified Vigenere Keys:')
seed = input('Enter a positive seed value:\n')
while not seed.isdigit():
seed = input('Error, seed value must be a positive integer.\n')
while int(seed) <= 0:
print(
'Error, seed value must be positive. Exiting to main menu.'
)
break
seed = int(seed)
key = input('Enter a key:\n')
message = input('Enter a message:\n')
print('Entered key:', key)
key = mvig.getNewKey(seed, key, len(message))
print('Used key:', key)
elif cipherChoice == 0:
print('Exiting now.')
exit()
