def decode(cipher: str, key: Union[int, str], input_file, output_file):
"""Use this command to decode the text (read from stdio or a file)
using the available ciphers and display the decrypted text or write
it to a file.
"""
input_file_name = input_file.name if input_file is not None else None
output_file_name = output_file.name if output_file is not None else None
io_handler = IOHandler(input_file_name, output_file_name)
input_text = io_handler.read()
if cipher == "caesar":
key = Caesar.check_key_type(key, int)
c = Caesar(key=key)
decrypted_str = c.decrypt(input_text)
if cipher == "vigenere":
v = Vigenere(key=key)
decrypted_str = v.decrypt(input_text)
if cipher == "vernam":
if input_file is None:
print(("An input file is required for the Vernam cipher"
" to work correctly. Exitting..."))
sys.exit()
vernam = Vernam(key=key)
decrypted_str = vernam.decrypt(input_text)
io_handler.write(decrypted_str)
def test_banburismus():
"""Test the Banburismus test with two different vigenere
ciphertext first and then with two equals.
"""
text1 = ("Once upon a midnight dreary, while I pondered, weak and weary "
"Over many a quaint and curious volume of forgotten lores.")
text2 = ("While I nodded, nearly napping, suddenly there came a tapping "
"As of some one gently rapping, rapping at my chamber door")
vigenere1 = Vigenere(key_length=8)
vigenere2 = Vigenere(key_length=8)
# H1 case
print("\nGenerated by the same cipher:")
ciphertext1 = vigenere1.encrypt(text1)
ciphertext2 = vigenere1.encrypt(text2)
banburismus(ciphertext1, ciphertext2)
# H0 case
print("\nGenerated by the different ciphers:")
ciphertext1 = vigenere1.encrypt(text1)
ciphertext2 = vigenere2.encrypt(text2)
banburismus(ciphertext1, ciphertext2)
def __init__(self):
super().__init__()
self.vg = Vigenere()
self.initUI()
# K2 from ciphers.vigenere import VigenereTableau, Vigenere kryptos_alphabet = "KRYPTOSABCDEFGHIJLMNQUVWXZ" vtableau = VigenereTableau(alphabet=kryptos_alphabet, row_fill=0, col_fill=4) cipher = Vigenere(tableau=vtableau) ciphertext = "VFPJUDEEHZWETZYVGWHKKQETGFQJNCEGGWHKK?DQMCPFQZDQMMIAGPFXHQRLGTIMVMZJANQLVKQEDAGDVFRPJUNGEUNAQZGZLECGYUXUEENJTBJLBQCRTBJDFHRRYIZETKZEMVDUFKSJHKFWHKUWQLSZFTIHHDDDUVH?DWKBFUFPWNTDFIYCUQZEREEVLDKFEZMOQQJLTTUGSYQPFEUNLAVIDXFLGGTEZ?FKZBSFDQVGOGIPUFXHHDRKFFHQNTGPUAECNUVPDJMQCLQUMUNEDFQELZZVRRGKFFVOEEXBDMVPNFQXEZLGREDNQFMPNZGLFLPMRJQYALMGNUVPDXVKPDQUMEBEDMHDAFMJGZNUPLGESWJLLAETG" keyword = "ABSCISSA" plaintext = cipher.decrypt(ciphertext, keyword) print "K2" print ciphertext print plaintext
def main(argv):
cipher_type, display_type, ifile, ofile, key_file = parse_cli(argv)
print('\n == TUCIL 1 KRIPTOGRAFI ==\n')
print(
list(cipher_type_list.keys())[cipher_type].upper() +
' ENCRYPTION function selected\n')
plaintext = ''
key = ''
ciphertext = ''
if cipher_type == 4:
plaintext = read_input_bytes(ifile, 'plaintext')
else:
plaintext = read_input(ifile, 'plaintext')
key = read_key(key_file)
if cipher_type == 0:
print("\n==== USING VIGINERE CIPHER ====\n")
ciphertext = Vigenere().encipher(plaintext, key)
elif cipher_type == 1:
print("\n==== USING FULL VIGINERE CIPHER ====\n")
vigenere_square = read_vigenere_json()
ciphertext = Vigenere().full_enchiper(plaintext, key, vigenere_square)
elif cipher_type == 2:
print("\n==== USING AUTO-KEY VIGINERE CIPHER ====\n")
ciphertext = Vigenere().auto_key_enchiper(plaintext, key)
elif cipher_type == 3:
print("\n==== USING RUNNING-KEY VIGINERE CIPHER ====\n")
ciphertext = Vigenere().encipher(plaintext, key)
elif cipher_type == 4:
print("\n==== USING EXTENDED VIGINERE CIPHER ====\n")
ciphertext = ExtendedVigenere().encipher(plaintext, key)
elif cipher_type == 5:
print("\n==== USING PLAYFAIR CIPHER ====\n")
no_punc = True
no_space = True
if display_type == 0:
no_punc = False
no_space = False
elif display_type == 1:
no_punc = False
removed_char = input('Masukkan huruf yang dihilangkan > ').upper()
placeholder_char = input('Masukkan huruf penyisip > ').upper()
ciphertext = Playfair().encipher(plaintext,
key,
removed_char,
placeholder_char,
no_punc=no_punc,
no_space=no_space)
if hasattr(ciphertext, 'decode'):
# ciphertext is in bytes
while ofile == '':
ofile = input('Enter encrytion result save directory:\n> ')
save_output_bytes(ciphertext, ofile)
print('Result saved to %s \n' % (ofile))
else:
# ciphertext is a string
ciphertext = arrange_output(ciphertext, display_type)
print('\nENCRYPTION RESULT:\n' + ciphertext + '\n')
save_output(ciphertext, ofile)
write_file('hill_cipher_2x2.txt', output)
plain_list = read_file('hill_plain_3x3.txt')
output = ''
output += ' |2 4 12|\n'
output += 'Key = |9 1 6|\n'
output += ' |7 5 3|\n\n'
for plain in plain_list:
hill = Hill(plain, [[2, 4, 12], [9, 1, 6], [7, 5, 3]])
output += hill.encrypt() + '\n'
write_file('hill_cipher_3x3.txt', output)
plain_list = read_file('vigenere_plain.txt')
output = 'Key = pie\t(repeating mode)\n'
for plain in plain_list:
vigenere = Vigenere(plain, 'pie', False)
output += vigenere.encrypt() + '\n'
output += '\nKey = aether\t(auto mode)\n'
for plain in plain_list:
vigenere = Vigenere(plain, 'aether', True)
output += vigenere.encrypt() + '\n'
output += '\n'
write_file('vigenere_cipher.txt', output)
plain_list = read_file('vernam_plain.txt')
output = 'Key = SPARTANS\n'
for plain in plain_list:
vernam = Vernam(plain, 'SPARTANS')
output += vernam.encrypt() + '\n'
write_file('vernam_cipher.txt', output)
def test_vigenere_algorithm_dec():
c = Vigenere(key="42")
assert c.decrypt("bcdø") == "PSRø"
def test_vigenere_algorithm_enc():
c = Vigenere(key="42")
assert c.encrypt("abc\n") == "436\n"
def test_vigenere_algorithm_dec_enc(a):
c = Vigenere(key="42")
assert c.encrypt(c.decrypt(a)) == a