def test_mac_algs(self):
"""Unit test MAC algorithms"""
for mac_alg in get_mac_algs():
with self.subTest(mac_alg=mac_alg):
mac_keysize, _, _ = get_mac_params(mac_alg)
mac_key = os.urandom(mac_keysize)
packet = os.urandom(256)
enc_mac = get_mac(mac_alg, mac_key)
dec_mac = get_mac(mac_alg, mac_key)
badpacket = bytearray(packet)
badpacket[-1] ^= 0xff
mac = enc_mac.sign(0, packet)
badmac = bytearray(mac)
badmac[-1] ^= 0xff
self.assertTrue(dec_mac.verify(0, packet, mac))
self.assertFalse(dec_mac.verify(0, bytes(badpacket), mac))
self.assertFalse(dec_mac.verify(0, packet, bytes(badmac)))
def test_mac_algs(self):
"""Unit test MAC algorithms"""
for mac_alg in get_mac_algs():
with self.subTest(mac_alg=mac_alg):
mac_keysize, _, _ = get_mac_params(mac_alg)
mac_key = os.urandom(mac_keysize)
packet = os.urandom(256)
enc_mac = get_mac(mac_alg, mac_key)
dec_mac = get_mac(mac_alg, mac_key)
badpacket = bytearray(packet)
badpacket[-1] ^= 0xff
mac = enc_mac.sign(0, packet)
badmac = bytearray(mac)
badmac[-1] ^= 0xff
self.assertTrue(dec_mac.verify(0, packet, mac))
self.assertFalse(dec_mac.verify(0, bytes(badpacket), mac))
self.assertFalse(dec_mac.verify(0, packet, bytes(badmac)))
def test_mac_algs(self):
"""Unit test MAC algorithms"""
for alg in get_mac_algs():
with self.subTest(alg=alg):
keysize, _, _ = get_mac_params(alg)
key = os.urandom(keysize)
data = os.urandom(256)
enc_mac = get_mac(alg, key)
dec_mac = get_mac(alg, key)
baddata = bytearray(data)
baddata[-1] ^= 0xff
mac = enc_mac.sign(data)
badmac = bytearray(mac)
badmac[-1] ^= 0xff
self.assertTrue(dec_mac.verify(data, mac))
self.assertFalse(dec_mac.verify(bytes(baddata), mac))
self.assertFalse(dec_mac.verify(data, bytes(badmac)))
def test_mac_algs(self):
"""Unit test MAC algorithms"""
for alg in get_mac_algs():
with self.subTest(alg=alg):
keysize, _, _ = get_mac_params(alg)
key = os.urandom(keysize)
data = os.urandom(256)
enc_mac = get_mac(alg, key)
dec_mac = get_mac(alg, key)
baddata = bytearray(data)
baddata[-1] ^= 0xff
mac = enc_mac.sign(data)
badmac = bytearray(mac)
badmac[-1] ^= 0xff
self.assertTrue(dec_mac.verify(data, mac))
self.assertFalse(dec_mac.verify(bytes(baddata), mac))
self.assertFalse(dec_mac.verify(data, bytes(badmac)))