def test_fully_encrypted(self):
encoder = Encoder()
payload = self.create_payload()
token = encoder.encode(payload)
encrypted_token = encoder.encrypt(token)
response = self.client.get('/session?token=' + encrypted_token.decode())
self.assertEquals(302, response.status_code)
def generate_token():
encoder = Encoder()
user = os.getenv('USER', 'UNKNOWN')
payload = create_payload(user)
token = encoder.encode(payload)
encrypted_token = encoder.encrypt(token)
return encrypted_token
def test_authentication_tag_corrupted(self):
encoder = Encoder()
jwe = encoder.encrypt(VALID_SIGNED_JWT.encode(), tag=b'adssadsadsadsadasdasdasads')
decoder = JWTDecryptor()
with self.assertRaises(InvalidTokenException) as ite:
decoder.decrypt_jwt_token(jwe.decode())
def test_authentication_tag_not_128_bits(self):
encoder = Encoder()
jwe = encoder.encrypt(VALID_SIGNED_JWT.encode(), tag=os.urandom(10))
decoder = JWTDecryptor()
with self.assertRaises(InvalidTokenException) as ite:
decoder.decrypt_jwt_token(jwe.decode())
self.assertIn("'Authentication tag must be 16 bytes or longer", ite.exception.value)
def test_jwe_header_only_contains_alg_and_enc(self):
jwe_protected_header = b'{"alg":"RSA-OAEP","enc":"A256GCM", "test":"test"}'
encoder = Encoder()
jwe = encoder.encrypt(VALID_SIGNED_JWT.encode(), jwe_protected_header=encoder._base_64_encode(jwe_protected_header))
decoder = JWTDecryptor()
with self.assertRaises(InvalidTokenException) as ite:
decoder.decrypt_jwt_token(jwe.decode())
self.assertIn("InvalidTag", ite.exception.value)
def test_invalid_algorithm(self):
jwe_protected_header = b'{"alg":"PBES2_HS256_A128KW","enc":"A256GCM"}'
encoder = Encoder()
jwe = encoder.encrypt(VALID_SIGNED_JWT.encode(), jwe_protected_header=encoder._base_64_encode(jwe_protected_header))
decoder = JWTDecryptor()
with self.assertRaises(InvalidTokenException) as ite:
decoder.decrypt_jwt_token(jwe.decode())
self.assertIn("Invalid Algorithm", ite.exception.value)
def test_enc_missing(self):
jwe_protected_header = b'{"alg":"RSA-OAEP"}'
encoder = Encoder()
jwe = encoder.encrypt(VALID_SIGNED_JWT.encode(), jwe_protected_header=encoder._base_64_encode(jwe_protected_header))
decoder = JWTDecryptor()
with self.assertRaises(InvalidTokenException) as ite:
decoder.decrypt_jwt_token(jwe.decode())
self.assertIn("Missing Encoding", ite.exception.value)
def test_iv_not_96_bits(self):
iv = os.urandom(45)
encoder = Encoder()
jwe = encoder.encrypt(VALID_SIGNED_JWT.encode(), iv=iv)
decoder = JWTDecryptor()
with self.assertRaises(InvalidTokenException) as ite:
decoder.decrypt_jwt_token(jwe.decode())
self.assertIn("IV incorrect length", ite.exception.value)
def test_cek_not_256_bits(self):
cek = os.urandom(24)
encoder = Encoder()
jwe = encoder.encrypt(VALID_SIGNED_JWT.encode(), cek=cek)
decoder = JWTDecryptor()
with self.assertRaises(InvalidTokenException) as ite:
decoder.decrypt_jwt_token(jwe.decode())
self.assertIn("CEK incorrect length", ite.exception.value)
def test_jwe_key_not_2048_bits(self):
cek = os.urandom(32)
encoder = Encoder()
encrypted_key = encoder._encrypted_key(cek)
encrypted_key = encrypted_key[0:len(encrypted_key) - 2]
jwe = encoder.encrypt(VALID_SIGNED_JWT.encode(), cek=cek, encrypted_key=encrypted_key)
decoder = JWTDecryptor()
with self.assertRaises(InvalidTokenException) as ite:
decoder.decrypt_jwt_token(jwe.decode())
self.assertIn("ValueError", ite.exception.value)
def test_cipher_text_corrupted(self):
encoder = Encoder()
jwe = encoder.encrypt(VALID_SIGNED_JWT.encode())
tokens = jwe.decode().split('.')
jwe_protected_header = tokens[0]
encrypted_key = tokens[1]
encoded_iv = tokens[2]
encoded_cipher_text = tokens[3]
encoded_tag = tokens[4]
corrupted_cipher = encoded_cipher_text[0:len(encoded_cipher_text) - 1]
reassembled = jwe_protected_header + "." + encrypted_key + "." + encoded_iv + "." + corrupted_cipher + "." + encoded_tag
decoder = JWTDecryptor()
with self.assertRaises(InvalidTokenException) as ite:
decoder.decrypt_jwt_token(reassembled)
def generate_token(payload):
encoder = Encoder()
token = encoder.encode(payload)
encrypted_token = encoder.encrypt(token)
return encrypted_token