def test():
message = 'The quick brown fox jumped over the lazy dog!. 1234#'
key = 100
cipher = CaesarCipher()
cipher.encryptText(message, key)
encrypted = cipher.encrypted
unencrypted = cipher.decryptText(key)
assert unencrypted == message
def test_brute_force():
message = 'The quick brown fox jumped over the lazy dog!. 1234#'
key = 95
cipher = CaesarCipher()
cipher.encryptText(message, key)
encrypted = cipher.encrypted
for k in range(1, cipher.RNG_CHAR + 1):
unencrypted = cipher.decryptText(k)
print(f'Testing key = {k:02d} :', unencrypted)
if unencrypted == message:
break
print(f'Key found after {k} attempts!')
assert unencrypted == message
def main(process, key, input_file, output_file):
with open(input_file, "r") as f:
text = f.read()
cipher_obj = CaesarCipher()
if process == "encrypt":
result = cipher_obj.encrypt(text, key)
elif process == "decrypt":
result = cipher_obj.decrypt(text, key)
else:
raise Exception("No such process")
with open(output_file, "w") as f:
f.write(result)
def main() -> None:
print('Тестовый случай: русский язык, шифр Цезаря, ключ 10')
test_cipher('russian_text.txt', CaesarCipher(), 10)
print('Тестовый случай: английский язык, шифр Цезаря, ключ 5')
test_cipher('english_text.txt', CaesarCipher(), 5)
print(
'Тестовый случай: русский язык, шифр Виженера, ключ \'суперсекретныйключ\''
)
test_cipher('russian_text.txt', ViginereCipher(),
'суперсекретныйключ'.encode('utf-8'))
print(
'Тестовый случай: английский язык, шифр Цезаря, ключ \'supersecretkey\''
)
test_cipher('english_text.txt', ViginereCipher(), b'supersecretkey')
class TestEncryptString(unittest.TestCase):
def setUp(self):
self.message = CaesarCipher(PLAIN, SHIFT_BY)
def test_isinstance(self):
self.assertIsInstance(self.message, CaesarCipher)
def test_encrypt(self):
check = self.message.encrypt()
expect = CIPHER
self.assertEquals(check, expect)
class TestDecryptString(unittest.TestCase):
def setUp(self):
self.message = CaesarCipher(CIPHER, SHIFT_BY)
def test_isinstance(self):
self.assertIsInstance(self.message, CaesarCipher)
def test_decrypt(self):
check = self.message.decrypt()
expect = PLAIN.upper()
self.assertEquals(check, expect)
def setUp(self):
self.message = CaesarCipher(PLAIN, SHIFT_BY)
def setUp(self):
self.cipher = CaesarCipher()
class CaesarCipherTestCase(unittest.TestCase):
def setUp(self):
self.cipher = CaesarCipher()
def test_should_get_fulswrjudild_to_criptografia_word(self):
assert_equals(self.cipher.encrypt("criptografia"), "fulswrjudild")
def test_should_get_criptografia_when_decoded_criptografia_word(self):
encrypted = self.cipher.encrypt("criptografia")
assert_equals(self.cipher.decrypt(encrypted), "criptografia")
def test_should_get_zope_when_decoded_zope_word(self):
encrypted = self.cipher.encrypt("zope")
assert_equals(self.cipher.decrypt(encrypted), "zope")
def test_should_get_warm_when_decoded_warm_word(self):
encrypted = self.cipher.encrypt("warm")
assert_equals(self.cipher.decrypt(encrypted), "warm")
def test_should_get_xmen_when_decoded_xmen_word(self):
encrypted = self.cipher.encrypt("xmen")
assert_equals(self.cipher.decrypt(encrypted), "xmen")
def test_should_get_livelongandprosper_when_decoded_livelongandprosper_word(self):
encrypted = self.cipher.encrypt("livelongandprosper")
assert_equals(self.cipher.decrypt(encrypted), "livelongandprosper")
def test_should_get_zope_when_decoded_zope_word_with_a_7_key_value(self):
cipher = CaesarCipher(7)
encrypted = cipher.encrypt("zope")
assert_equals(cipher.decrypt(encrypted), "zope")
#Created by Zoltan Szeman
#This is how Caeser used to cipher his private letters
from random import randint
from caesar_cipher import CaesarCipher
from decipher import Decipher
'''Ciphering'''
file = open("text-file\cryptonomicon_plaintext.txt")
msg = file.read()
alphabet = "abcdefghijklmnopqrstuvwxyz"
key = randint(1,25) #the key remains unknown
cipher = CaesarCipher(plaintext = msg, char_set = alphabet)
coded_msg = cipher.encrypt(key)
'''Deciphering'''
file_coded = open("text-file\cryptonomicon_ciphertext.txt","w+")
file_coded.write(coded_msg)
file_coded.seek(0)
msg_to_break = file_coded.read()
codebreak = Decipher(plaintext = "", ciphertext = msg_to_break, char_set = alphabet)
method = "f" #"f" - frequancy analysis or "b" - brute force codebreaking
if method == "f":
codebreak_key = codebreak.freq_analysis()
elif method == "b":
codebreak_key = codebreak.brute_force()
decoded_msg = codebreak.decrypt(codebreak_key)
file_decoded = open("text-file\cryptonomicon_deciphered.txt","w+")
file_decoded.write(decoded_msg)
def test_invalid_key(self, key):
with pytest.raises(ValueError) as err_msg:
CaesarCipher(key)
assert str(err_msg.value) == "Key must be an integer between 1 and 25."
def test_decipher(self):
cipher = CaesarCipher(10)
deciphered_msg = cipher.decipher("Klmn.opqRs#tuvw xyZAbcdef?Ghij")
assert deciphered_msg == "Abcd.efgHi#jklm noPQrstuv?Wxyz"
def __init__(self, plaintext="", ciphertext="", char_set=""):
'''CaesarCipher is the parent'''
CaesarCipher.__init__(self, plaintext, ciphertext, char_set)
def setUp(self):
self.cipher = CaesarCipher()
def test_should_get_zope_when_decoded_zope_word_with_a_7_key_value(self):
cipher = CaesarCipher(7)
encrypted = cipher.encrypt("zope")
assert_equals(cipher.decrypt(encrypted), "zope")
def setUp(self):
self.message = CaesarCipher(CIPHER, SHIFT_BY)
class CaesarCipherTestCase(unittest.TestCase):
def setUp(self):
self.cipher = CaesarCipher()
def test_should_get_fulswrjudild_to_criptografia_word(self):
assert_equals(self.cipher.encrypt("criptografia"), "fulswrjudild")
def test_should_get_criptografia_when_decoded_criptografia_word(self):
encrypted = self.cipher.encrypt("criptografia")
assert_equals(self.cipher.decrypt(encrypted), "criptografia")
def test_should_get_zope_when_decoded_zope_word(self):
encrypted = self.cipher.encrypt("zope")
assert_equals(self.cipher.decrypt(encrypted), "zope")
def test_should_get_warm_when_decoded_warm_word(self):
encrypted = self.cipher.encrypt("warm")
assert_equals(self.cipher.decrypt(encrypted), "warm")
def test_should_get_xmen_when_decoded_xmen_word(self):
encrypted = self.cipher.encrypt("xmen")
assert_equals(self.cipher.decrypt(encrypted), "xmen")
def test_should_get_livelongandprosper_when_decoded_livelongandprosper_word(
self):
encrypted = self.cipher.encrypt("livelongandprosper")
assert_equals(self.cipher.decrypt(encrypted), "livelongandprosper")
def test_should_get_zope_when_decoded_zope_word_with_a_7_key_value(self):
cipher = CaesarCipher(7)
encrypted = cipher.encrypt("zope")
assert_equals(cipher.decrypt(encrypted), "zope")
N_TRAIN_SAMPLES = 100 N_TEST_SAMPLES = 50 MESS_LEN = 50 EMBEDDING_DIM = 5 HIDDEN_SIZE = 10 # Training LR = 1e-3 N_EPOCHS = 15 #------------------------------------------------------------------------------ # Main execution #------------------------------------------------------------------------------ # Create dataset cipher = CaesarCipher() train_data = cipher.gen_data(n_samples=N_TRAIN_SAMPLES, mess_len=MESS_LEN) test_data = cipher.gen_data(n_samples=N_TEST_SAMPLES, mess_len=MESS_LEN) # Build model network = Network( input_sz=cipher.n_vocab, embedding_dim=EMBEDDING_DIM, hidden_sz=HIDDEN_SIZE, output_sz=cipher.n_vocab, ) # Loss and optimizer loss_fn = nn.CrossEntropyLoss() optimizer = torch.optim.Adam(network.parameters(), lr=LR)
def test_should_get_zope_when_decoded_zope_word_with_a_7_key_value(self):
cipher = CaesarCipher(7)
encrypted = cipher.encrypt("zope")
assert_equals(cipher.decrypt(encrypted), "zope")
