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"""Tests for josepy.jwa."""
import sys
import unittest
from typing import Any
from unittest import mock
import pytest
import test_util
from josepy import errors
RSA256_KEY = test_util.load_rsa_private_key("rsa256_key.pem")
RSA512_KEY = test_util.load_rsa_private_key("rsa512_key.pem")
RSA1024_KEY = test_util.load_rsa_private_key("rsa1024_key.pem")
EC_P256_KEY = test_util.load_ec_private_key("ec_p256_key.pem")
EC_P384_KEY = test_util.load_ec_private_key("ec_p384_key.pem")
EC_P521_KEY = test_util.load_ec_private_key("ec_p521_key.pem")
class JWASignatureTest(unittest.TestCase):
"""Tests for josepy.jwa.JWASignature."""
def setUp(self) -> None:
from josepy.jwa import JWASignature
class MockSig(JWASignature):
def sign(self, key: Any, msg: bytes) -> bytes:
raise NotImplementedError() # pragma: no cover
def verify(self, key: Any, msg: bytes, sig: bytes) -> bool:
raise NotImplementedError() # pragma: no cover
self.Sig1 = MockSig("Sig1")
self.Sig2 = MockSig("Sig2")
def test_eq(self) -> None:
assert self.Sig1 == self.Sig1
def test_ne(self) -> None:
assert self.Sig1 != self.Sig2
def test_ne_other_type(self) -> None:
assert self.Sig1 != 5
def test_repr(self) -> None:
assert "Sig1" == repr(self.Sig1)
assert "Sig2" == repr(self.Sig2)
def test_to_partial_json(self) -> None:
assert self.Sig1.to_partial_json() == "Sig1"
assert self.Sig2.to_partial_json() == "Sig2"
def test_from_json(self) -> None:
from josepy.jwa import RS256, JWASignature
assert JWASignature.from_json("RS256") is RS256
class JWAHSTest(unittest.TestCase):
def test_it(self) -> None:
from josepy.jwa import HS256
sig = (
b"\xceR\xea\xcd\x94\xab\xcf\xfb\xe0\xacA.:\x1a'\x08i\xe2\xc4"
b"\r\x85+\x0e\x85\xaeUZ\xd4\xb3\x97zO"
)
assert HS256.sign(b"some key", b"foo") == sig
assert HS256.verify(b"some key", b"foo", sig) is True
assert HS256.verify(b"some key", b"foo", sig + b"!") is False
class JWARSTest(unittest.TestCase):
def test_sign_no_private_part(self) -> None:
from josepy.jwa import RS256
with pytest.raises(errors.Error):
RS256.sign(RSA512_KEY.public_key(), b"foo")
def test_sign_key_too_small(self) -> None:
from josepy.jwa import PS256, RS256
with pytest.raises(errors.Error):
RS256.sign(RSA256_KEY, b"foo")
with pytest.raises(errors.Error):
PS256.sign(RSA256_KEY, b"foo")
def test_rs(self) -> None:
from josepy.jwa import RS256
sig = (
b"|\xc6\xb2\xa4\xab(\x87\x99\xfa*:\xea\xf8\xa0N&}\x9f\x0f\xc0O"
b'\xc6t\xa3\xe6\xfa\xbb"\x15Y\x80Y\xe0\x81\xb8\x88)\xba\x0c\x9c'
b"\xa4\x99\x1e\x19&\xd8\xc7\x99S\x97\xfc\x85\x0cOV\xe6\x07\x99"
b"\xd2\xb9.>}\xfd"
)
assert RS256.sign(RSA512_KEY, b"foo") == sig
assert RS256.verify(RSA512_KEY.public_key(), b"foo", sig) is True
assert RS256.verify(RSA512_KEY.public_key(), b"foo", sig + b"!") is False
def test_ps(self) -> None:
from josepy.jwa import PS256
sig = PS256.sign(RSA1024_KEY, b"foo")
assert PS256.verify(RSA1024_KEY.public_key(), b"foo", sig) is True
assert PS256.verify(RSA1024_KEY.public_key(), b"foo", sig + b"!") is False
def test_sign_new_api(self) -> None:
from josepy.jwa import RS256
key = mock.MagicMock()
RS256.sign(key, b"message")
assert key.sign.called is True
def test_verify_new_api(self) -> None:
from josepy.jwa import RS256
key = mock.MagicMock()
RS256.verify(key, b"message", b"signature")
assert key.verify.called is True
class JWAECTest(unittest.TestCase):
def test_sign_no_private_part(self) -> None:
from josepy.jwa import ES256
with pytest.raises(errors.Error):
ES256.sign(EC_P256_KEY.public_key(), b"foo")
def test_es256_sign_and_verify(self) -> None:
from josepy.jwa import ES256
message = b"foo"
signature = ES256.sign(EC_P256_KEY, message)
assert ES256.verify(EC_P256_KEY.public_key(), message, signature) is True
def test_es384_sign_and_verify(self) -> None:
from josepy.jwa import ES384
message = b"foo"
signature = ES384.sign(EC_P384_KEY, message)
assert ES384.verify(EC_P384_KEY.public_key(), message, signature) is True
def test_verify_with_wrong_jwa(self) -> None:
from josepy.jwa import ES256, ES384
message = b"foo"
signature = ES256.sign(EC_P256_KEY, message)
assert ES384.verify(EC_P384_KEY.public_key(), message, signature) is False
def test_verify_with_different_key(self) -> None:
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives.asymmetric import ec
from josepy.jwa import ES256
message = b"foo"
signature = ES256.sign(EC_P256_KEY, message)
different_key = ec.generate_private_key(ec.SECP256R1(), default_backend())
assert ES256.verify(different_key.public_key(), message, signature) is False
def test_sign_new_api(self) -> None:
from cryptography.hazmat.primitives.asymmetric.ec import SECP256R1
from josepy.jwa import ES256
key = mock.MagicMock(curve=SECP256R1())
with mock.patch("josepy.jwa.decode_dss_signature") as decode_patch:
decode_patch.return_value = (0, 0)
ES256.sign(key, b"message")
assert key.sign.called is True
def test_verify_new_api(self) -> None:
import math
from cryptography.hazmat.primitives.asymmetric.ec import SECP256R1
from josepy.jwa import ES256
key = mock.MagicMock(key_size=256, curve=SECP256R1())
ES256.verify(key, b"message", b"\x00" * math.ceil(key.key_size / 8) * 2)
assert key.verify.called is True
def test_signature_size(self) -> None:
from josepy.jwa import ES512
from josepy.jwk import JWK
key = JWK.from_json(
{
"d": (
"Af9KP6DqLRbtit6NS_LRIaCP_-NdC5l5R2ugbILdfpv6dS9R4wUPNxiGw"
"-vVWumA56Yo1oBnEm8ZdR4W-u1lPHw5"
),
"x": (
"AD4i4STyJ07iZJkHkpKEOuICpn6IHknzwAlrf-1w1a5dqOsRe30EECSN4vFxae"
"AmtdBSCKBwCq7h1q4bPgMrMUvF"
),
"y": (
"AHAlXxrabjcx_yBxGObnm_DkEQMJK1E69OHY3x3VxF5VXoKc93CG4GLoaPvphZQv"
"Znt5EfExQoPktwOMIVhBHaFR"
),
"crv": "P-521",
"kty": "EC",
}
)
with mock.patch("josepy.jwa.decode_dss_signature") as decode_patch:
decode_patch.return_value = (0, 0)
assert isinstance(key, JWK)
sig = ES512.sign(key.key, b"test")
assert len(sig) == 2 * 66
if __name__ == "__main__":
sys.exit(pytest.main(sys.argv[1:] + [__file__])) # pragma: no cover
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