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How to use verify_mac method in localstack
Best Python code snippet using localstack_python
_mac_wrapper_test.py
Source:_mac_wrapper_test.py 
...29class MacWrapperTest(parameterized.TestCase):30 @parameterized.parameters([MAC_TEMPLATE,31 RAW_MAC_TEMPLATE,32 LEGACY_MAC_TEMPLATE])33 def test_compute_verify_mac(self, template):34 keyset_handle = tink.new_keyset_handle(template)35 primitive = keyset_handle.primitive(mac.Mac)36 tag = primitive.compute_mac(b'data')37 # No exception raised, no return value.38 self.assertIsNone(primitive.verify_mac(tag, b'data'))39 @parameterized.parameters([MAC_TEMPLATE,40 RAW_MAC_TEMPLATE,41 LEGACY_MAC_TEMPLATE])42 def test_verify_unknown_mac_fails(self, template):43 unknown_handle = tink.new_keyset_handle(template)44 unknown_primitive = unknown_handle.primitive(mac.Mac)45 unknown_tag = unknown_primitive.compute_mac(b'data')46 keyset_handle = tink.new_keyset_handle(template)47 primitive = keyset_handle.primitive(mac.Mac)48 with self.assertRaises(tink.TinkError):49 primitive.verify_mac(unknown_tag, b'data')50 @parameterized.parameters([MAC_TEMPLATE,51 RAW_MAC_TEMPLATE,52 LEGACY_MAC_TEMPLATE])53 def test_verify_short_mac_fails(self, template):54 keyset_handle = tink.new_keyset_handle(template)55 primitive = keyset_handle.primitive(mac.Mac)56 with self.assertRaises(tink.TinkError):57 primitive.verify_mac(b'', b'data')58 with self.assertRaises(tink.TinkError):59 primitive.verify_mac(b'tag', b'data')60 @parameterized.parameters(61 [(MAC_TEMPLATE, MAC_TEMPLATE),62 (MAC_TEMPLATE, RAW_MAC_TEMPLATE),63 (MAC_TEMPLATE, LEGACY_MAC_TEMPLATE),64 (RAW_MAC_TEMPLATE, MAC_TEMPLATE),65 (RAW_MAC_TEMPLATE, RAW_MAC_TEMPLATE),66 (RAW_MAC_TEMPLATE, LEGACY_MAC_TEMPLATE),67 (LEGACY_MAC_TEMPLATE, MAC_TEMPLATE),68 (LEGACY_MAC_TEMPLATE, RAW_MAC_TEMPLATE),69 (LEGACY_MAC_TEMPLATE, LEGACY_MAC_TEMPLATE)])70 def test_key_rotation(self, old_key_tmpl, new_key_tmpl):71 builder = keyset_builder.new_keyset_builder()72 older_key_id = builder.add_new_key(old_key_tmpl)73 builder.set_primary_key(older_key_id)74 mac1 = builder.keyset_handle().primitive(mac.Mac)75 newer_key_id = builder.add_new_key(new_key_tmpl)76 mac2 = builder.keyset_handle().primitive(mac.Mac)77 builder.set_primary_key(newer_key_id)78 mac3 = builder.keyset_handle().primitive(mac.Mac)79 builder.disable_key(older_key_id)80 mac4 = builder.keyset_handle().primitive(mac.Mac)81 self.assertNotEqual(older_key_id, newer_key_id)82 # 1 uses the older key. So 1, 2 and 3 can verify the mac, but not 4.83 mac_value1 = mac1.compute_mac(b'plaintext')84 mac1.verify_mac(mac_value1, b'plaintext')85 mac2.verify_mac(mac_value1, b'plaintext')86 mac3.verify_mac(mac_value1, b'plaintext')87 with self.assertRaises(tink.TinkError):88 mac4.verify_mac(mac_value1, b'plaintext')89 # 2 uses the older key. So 1, 2 and 3 can verify the mac, but not 4.90 mac_value2 = mac2.compute_mac(b'plaintext')91 mac1.verify_mac(mac_value2, b'plaintext')92 mac2.verify_mac(mac_value2, b'plaintext')93 mac3.verify_mac(mac_value2, b'plaintext')94 with self.assertRaises(tink.TinkError):95 mac4.verify_mac(mac_value2, b'plaintext')96 # 3 uses the newer key. So 2, 3 and 4 can verify the mac, but not 1.97 mac_value3 = mac3.compute_mac(b'plaintext')98 with self.assertRaises(tink.TinkError):99 mac1.verify_mac(mac_value3, b'plaintext')100 mac2.verify_mac(mac_value3, b'plaintext')101 mac3.verify_mac(mac_value3, b'plaintext')102 mac4.verify_mac(mac_value3, b'plaintext')103 # 4 uses the newer key. So 2, 3 and 4 can verify the mac, but not 1.104 mac_value4 = mac4.compute_mac(b'plaintext')105 with self.assertRaises(tink.TinkError):106 mac1.verify_mac(mac_value4, b'plaintext')107 mac2.verify_mac(mac_value4, b'plaintext')108 mac3.verify_mac(mac_value4, b'plaintext')109 mac4.verify_mac(mac_value4, b'plaintext')110if __name__ == '__main__':...
dec.py
Source:dec.py
...20 cipher = Cipher(algorithms.ChaCha20(key, nonce), mode=None)21 plaintext = cipher.decryptor().update(ciphertext)22 return plaintext23# Verify the validation of the mac to the text24def verify_mac(msg_bytes, mac_bytes, key):25 h = hmac.HMAC(key, hashes.SHA256())26 h.update(msg_bytes)27 h.verify(mac_bytes)28######## Decryption Schemes ########29# Encrypt Then MAC30def etm():31 data = rff("dados-etm.dat")32 mac = data["encrypted"][-32:]33 ciphertext = data["encrypted"][:-32]34 try:35 verify_mac(ciphertext, mac, HMAC_KEY)36 plaintext = dec_bytes(ciphertext, KEY, data["nonce"])37 print(plaintext.decode('utf-8'))38 except:39 print('Could not verify data integrity')40# Encrypt And MAC41def eam():42 data = rff("dados-eam.dat")43 mac = data["encrypted"][-32:]44 ciphertext = data["encrypted"][:-32]45 plaintext = dec_bytes(ciphertext, KEY, data["nonce"])46 try:47 verify_mac(plaintext, mac, HMAC_KEY)48 print(plaintext.decode('utf-8'))49 except:50 print('Could not verify data integrity')51# MAC Then Encrypt 52def mte():53 data = rff("dados-mte.dat")54 plaintext_mac = dec_bytes(data["encrypted"], KEY, data["nonce"])55 mac = plaintext_mac[-32:]56 plaintext = plaintext_mac[:-32]57 try:58 verify_mac(plaintext, mac, HMAC_KEY)59 print(plaintext.decode('utf-8'))60 except:61 print('Could not verify data integrity')62####################################63def main():64 if len(sys.argv) != 2:65 print("Please provide one of: eam, etm, mte")66 elif sys.argv[1] == "eam":67 eam()68 elif sys.argv[1] == "etm":69 etm()70 elif sys.argv[1] == "mte":71 mte()72 else:...
hack_mac_hash.py
Source:hack_mac_hash.py
1from time import time2def verify_mac(x, y, n):3 for i in range(n):4 if x[i] != y[i]:5 return False6 return True7MAC1 = '0123456789abcdef'8MAC2 = '01X3456789abcdef'9TRIALS = 10000010# пÑи каждом обÑаÑении к verify_mac() пÑоÑмаÑÑиваÑÑÑÑ Ð²Ñе воÑÐµÐ¼Ñ Ð±Ð°Ð¹Ñ11start = time()12for i in range(TRIALS):13 verify_mac(MAC1, MAC1, len(MAC1))14end = time()15print('%0.5f' % (end-start))16# пÑи каждом обÑаÑении к verify_mac() пÑоÑмаÑÑиваÑÑÑÑ ÑолÑко ÑÑи байÑа17start = time()18for i in range(TRIALS):19 verify_mac(MAC1, MAC2, len(MAC1))20end = time()...
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