def _createContext(self, encrypt):
context = m2.cipher_ctx_new()
keybits = len(self.key) * 8
mode = [None, 'ecb', 'cbc', 'cfb1', 'cfb8', 'cfb64', 'cfb128', 'ofb', 'ctr'][self.mode]
if mode is None:
raise AssertionError
ciph_type_name = 'aes_%d_%s' % (keybits, mode)
cipherType = getattr(m2, ciph_type_name)()
m2.cipher_init(context, cipherType, self.key, self.IV, encrypt)
return context
def _createContext(self, encrypt):
context = m2.cipher_ctx_new()
if len(self.key)==16:
cipherType = m2.aes_128_cbc()
elif len(self.key)==24:
cipherType = m2.aes_192_cbc()
elif len(self.key)==32:
cipherType = m2.aes_256_cbc()
else:
raise AssertionError("Key is bad size: %s" % len(self.key))
m2.cipher_init(context, cipherType, self.key, self.IV, encrypt)
return context
def _createContext(self, encrypt):
context = m2.cipher_ctx_new()
keybits = len(self.key) * 8
mode = [
None, 'ecb', 'cbc', 'cfb1', 'cfb8', 'cfb64', 'cfb128', 'ofb', 'ctr'
][self.mode]
if mode is None:
raise AssertionError
ciph_type_name = 'aes_%d_%s' % (keybits, mode)
cipherType = getattr(m2, ciph_type_name)()
m2.cipher_init(context, cipherType, self.key, self.IV, encrypt)
return context
def __init__(self, alg, key, iv, op, key_as_bytes=0, d='md5',
salt='12345678', i=1, padding=1):
cipher = getattr(m2, alg, None)
if cipher is None:
raise ValueError('unknown cipher', alg)
self.cipher = cipher()
if key_as_bytes:
kmd = getattr(m2, d, None)
if kmd is None:
raise ValueError('unknown message digest', d)
key = m2.bytes_to_key(self.cipher, kmd(), key, salt, iv, i)
self.ctx = m2.cipher_ctx_new()
m2.cipher_init(self.ctx, self.cipher, key, iv, op)
self.set_padding(padding)
del key
def test_cipher_init_reinit(self):
ctx = m2.cipher_ctx_new()
m2.cipher_init(ctx, m2.aes_128_cbc(), b'\x01' * (128//8), b'\x02' * (128//8), 1)
m2.cipher_init(ctx, m2.aes_128_cbc(), None, None, 1)
def _createContext(self, encrypt):
context = m2.cipher_ctx_new()
cipherType = m2.des_ede3_cbc()
m2.cipher_init(context, cipherType, self.key, self.IV, encrypt)
return context
def _createContext(self, encrypt):
context = m2.cipher_ctx_new()
cipherType = m2.des_ede3_cbc()
m2.cipher_init(context, cipherType, self.key, self.IV, encrypt)
return context
