def test_punctuation(self):
""" AffineSubstitution (test_punctuation): punctuation should be unmodified """
e = Affine(a=7, b=8)
original = '!@$%%^&*()_-+={}[]|":;<>,./?'
enciphered = e.encipher(original, keep_punct=True)
self.assertEqual(original.upper(), enciphered.upper())
e = Affine(a=7, b=8)
original = '!@$%%^&*()_-+={}[]|":;<>,./?'
enciphered = e.encipher(original, keep_punct=False)
self.assertEqual("", enciphered.upper())
def test_decipher(self):
""" AffineSubstitution (test_decipher): test known ciphertext->plaintext pairs """
text = "pmjgdaxurolifczwtqnkhebyvspmjgdaxurolifczwtqnkhebyvs"
declist = [
"yfmtahovcjqxelszgnubipwdkryfmtahovcjqxelszgnubipwdkr",
"onmlkjihgfedcbazyxwvutsrqponmlkjihgfedcbazyxwvutsrqp",
"jarizqhypgxofwnevmdulctkbsjarizqhypgxofwnevmdulctkbs",
"pmjgdaxurolifczwtqnkhebyvspmjgdaxurolifczwtqnkhebyvs",
"tmfyrkdwpibungzslexqjcvohatmfyrkdwpibungzslexqjcvoha",
"abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz",
]
for i, key in enumerate(((7, 3), (3, 25), (9, 12), (1, 0), (19, 18), (23, 15))):
a, b = key
dec = Affine(a, b).decipher(text)
self.assertEqual(dec.upper(), declist[i].upper())
def test_encipher(self):
""" AffineSubstitution (test_encipher): test known plaintext->ciphertext pairs """
text = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
enclist = [
"hijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg",
"dgjmpsvybehknqtwzcfiloruxadgjmpsvybehknqtwzcfiloruxa",
"afkpuzejotydinsxchmrwbglqvafkpuzejotydinsxchmrwbglqv",
"ovcjqxelszgnubipwdkryfmtahovcjqxelszgnubipwdkryfmtah",
"sbktcludmvenwfoxgpyhqzirajsbktcludmvenwfoxgpyhqziraj",
"pmjgdaxurolifczwtqnkhebyvspmjgdaxurolifczwtqnkhebyvs",
]
for i, key in enumerate(((1, 7), (3, 3), (5, 0), (7, 14), (9, 18), (23, 15))):
a, b = key
enc = Affine(a, b).encipher(text)
self.assertEqual(enc.upper(), enclist[i].upper())
def test_decipher(self):
''' AffineSubstitution (test_decipher): test known ciphertext->plaintext pairs '''
text = 'pmjgdaxurolifczwtqnkhebyvspmjgdaxurolifczwtqnkhebyvs'
declist = [
'yfmtahovcjqxelszgnubipwdkryfmtahovcjqxelszgnubipwdkr',
'onmlkjihgfedcbazyxwvutsrqponmlkjihgfedcbazyxwvutsrqp',
'jarizqhypgxofwnevmdulctkbsjarizqhypgxofwnevmdulctkbs',
'pmjgdaxurolifczwtqnkhebyvspmjgdaxurolifczwtqnkhebyvs',
'tmfyrkdwpibungzslexqjcvohatmfyrkdwpibungzslexqjcvoha',
'abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz'
]
for i, key in enumerate(
((7, 3), (3, 25), (9, 12), (1, 0), (19, 18), (23, 15))):
a, b = key
dec = Affine(a, b).decipher(text)
self.assertEqual(dec.upper(), declist[i].upper())
def test_encipher(self):
''' AffineSubstitution (test_encipher): test known plaintext->ciphertext pairs '''
text = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
enclist = [
'hijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg',
'dgjmpsvybehknqtwzcfiloruxadgjmpsvybehknqtwzcfiloruxa',
'afkpuzejotydinsxchmrwbglqvafkpuzejotydinsxchmrwbglqv',
'ovcjqxelszgnubipwdkryfmtahovcjqxelszgnubipwdkryfmtah',
'sbktcludmvenwfoxgpyhqzirajsbktcludmvenwfoxgpyhqziraj',
'pmjgdaxurolifczwtqnkhebyvspmjgdaxurolifczwtqnkhebyvs'
]
for i, key in enumerate(
((1, 7), (3, 3), (5, 0), (7, 14), (9, 18), (23, 15))):
a, b = key
enc = Affine(a, b).encipher(text)
self.assertEqual(enc.upper(), enclist[i].upper())
def test_punctuation(self):
''' AffineSubstitution (test_punctuation): punctuation should be unmodified '''
e = Affine(a=7, b=8)
original = '!@$%%^&*()_-+={}[]|":;<>,./?'
enciphered = e.encipher(original, keep_punct=True)
self.assertEqual(original.upper(), enciphered.upper())
e = Affine(a=7, b=8)
original = '!@$%%^&*()_-+={}[]|":;<>,./?'
enciphered = e.encipher(original, keep_punct=False)
self.assertEqual('', enciphered.upper())