def test_basic_for_stream_ciphers(self):
for buffersize in (3, 7, 56, 128, 1231):
data = self.generate_random_buffer(buffersize)
for name in ('rc4', 'seal', 'chacha', 'salsa'):
unit = resolve(name)
for size in unit.key_sizes:
S = unit(key=self.generate_random_buffer(size))
self.assertEqual(S(S(data)), data)
def test_basic_for_block_ciphers(self):
for buffersize in (3, 7, 56, 128, 1231):
data = self.generate_random_buffer(buffersize)
for name in ('aes', 'blowfish', 'cast', 'des', 'des3', 'rc2'):
unit = resolve(name)
for size in unit.key_sizes:
K = self.generate_random_buffer(size)
V = self.generate_random_buffer(unit.blocksize)
D = unit(key=K, iv=V, mode='CBC')
for P in ['PKCS7', 'ISO7816', 'X923']:
E = unit(key=K, iv=V, padding=P, mode='CBC')
self.assertEqual(D.process(E.reverse(data)), data)
def test_reversible(self):
neg = resolve('neg')
b64 = resolve('b64')
self.assertEqual(neg.is_reversible, False)
self.assertEqual(b64.is_reversible, True)