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from unittest import TestCase
from joserfc import jws
from joserfc.jwk import (
guess_key,
import_key,
generate_key,
thumbprint_uri,
)
from joserfc.jwk import KeySet, OctKey, RSAKey, ECKey, OKPKey
from joserfc.errors import (
UnsupportedKeyAlgorithmError,
UnsupportedKeyUseError,
UnsupportedKeyOperationError,
InvalidKeyTypeError,
MissingKeyTypeError,
InvalidKeyIdError,
)
from tests.keys import read_key
class Guest:
def __init__(self):
self._headers = {"alg": "HS256"}
def headers(self):
return self._headers
def set_kid(self, kid):
self._headers["kid"] = kid
class TestKeyMethods(TestCase):
def test_guess_callable_key(self):
oct_key = OctKey.generate_key(parameters={"kid": "1"})
rsa_key = RSAKey.generate_key(parameters={"kid": "2"})
def rsa_key_func(obj):
return rsa_key
def key_set_func(obj):
return KeySet([oct_key, rsa_key])
key = guess_key(rsa_key_func, Guest())
self.assertIsInstance(key, RSAKey)
guest = Guest()
guest.set_kid("2")
key = guess_key(key_set_func, guest)
self.assertIsInstance(key, RSAKey)
def test_guess_key_set(self):
key_set = KeySet([OctKey.generate_key(), RSAKey.generate_key()])
guest = Guest()
guest._headers["alg"] = "HS256"
self.assertRaises(InvalidKeyIdError, guess_key, key_set, guest)
key1 = guess_key(key_set, guest, True)
self.assertIsInstance(key1, OctKey)
guess_key(key_set, guest)
guest = Guest()
guest._headers["alg"] = "RS256"
self.assertRaises(InvalidKeyIdError, guess_key, key_set, guest)
key2 = guess_key(key_set, guest, True)
self.assertIsInstance(key2, RSAKey)
guest = Guest()
guest._headers["alg"] = "ES256"
self.assertRaises(ValueError, guess_key, key_set, guest, True)
def test_invalid_key(self):
self.assertRaises(ValueError, guess_key, {}, Guest())
def test_import_key(self):
# test bytes
key = import_key(b"secret", "oct")
self.assertIsInstance(key, OctKey)
# test string
key = import_key("secret", "oct")
self.assertIsInstance(key, OctKey)
# test dict
data = key.as_dict()
key = import_key(data)
self.assertIsInstance(key, OctKey)
self.assertRaises(InvalidKeyTypeError, import_key, "secret", "invalid")
def test_generate_key(self):
key = generate_key("oct")
self.assertIsInstance(key, OctKey)
key = generate_key("RSA")
self.assertIsInstance(key, RSAKey)
key = generate_key("EC")
self.assertIsInstance(key, ECKey)
key = generate_key("OKP")
self.assertIsInstance(key, OKPKey)
self.assertRaises(InvalidKeyTypeError, generate_key, "invalid", 8)
def test_check_use(self):
key = OctKey.import_key("secret", {"use": "sig"})
key.check_use("sig")
self.assertRaises(UnsupportedKeyUseError, key.check_use, "enc")
self.assertRaises(UnsupportedKeyUseError, key.check_use, "invalid")
def test_check_alg(self):
key = OctKey.import_key("secret", {"alg": "HS256"})
key.check_alg("HS256")
self.assertRaises(UnsupportedKeyAlgorithmError, key.check_alg, "RS256")
def test_alg_property(self):
key = OctKey.import_key("secret")
self.assertIsNone(key.alg)
key = OctKey.import_key("secret", {"alg": "HS256"})
self.assertEqual(key.alg, "HS256")
def test_check_ops(self):
key = OctKey.import_key("secret", {"key_ops": ["sign", "verify"]})
key.check_key_op("sign")
self.assertRaises(UnsupportedKeyOperationError, key.check_key_op, "wrapKey")
self.assertRaises(UnsupportedKeyOperationError, key.check_key_op, "invalid")
key = RSAKey.generate_key(private=False)
self.assertRaises(UnsupportedKeyOperationError, key.check_key_op, "sign")
def test_import_without_kty(self):
self.assertRaises(MissingKeyTypeError, import_key, {})
def test_thumbprint_uri(self):
value = thumbprint_uri(
{
"kty": "EC",
"crv": "P-256",
"x": "jJ6Flys3zK9jUhnOHf6G49Dyp5hah6CNP84-gY-n9eo",
"y": "nhI6iD5eFXgBTLt_1p3aip-5VbZeMhxeFSpjfEAf7Ww",
}
)
expected = "urn:ietf:params:oauth:jwk-thumbprint:sha-256:w9eYdC6_s_tLQ8lH6PUpc0mddazaqtPgeC2IgWDiqY8"
self.assertEqual(value, expected)
def test_find_correct_key_with_use(self):
key = OctKey.generate_key()
dict_key = key.as_dict()
key1 = OctKey.import_key(dict_key, {"use": "enc"})
key2 = OctKey.import_key(dict_key, {"use": "sig"})
self.assertEqual(key1.kid, key2.kid)
key_set = KeySet([key1, key2])
# pick randomly
jws.serialize_compact({"alg": "HS256"}, "foo", key_set)
# get by kid
jws.serialize_compact({"alg": "HS256", "kid": key2.kid}, "foo", key_set)
key_set = KeySet([key1, key2, key2])
# return the first found key
jws.serialize_compact({"alg": "HS256", "kid": key2.kid}, "foo", key_set)
def test_find_correct_key_with_alg(self):
key = OctKey.generate_key()
dict_key = key.as_dict()
key1 = OctKey.import_key(dict_key, {"alg": "HS256"})
key2 = OctKey.import_key(dict_key, {"alg": "dir"})
self.assertEqual(key1.kid, key2.kid)
key_set = KeySet([key1, key2])
# pick randomly
jws.serialize_compact({"alg": "HS256"}, "foo", key_set)
# get by kid
jws.serialize_compact({"alg": "HS256", "kid": key2.kid}, "foo", key_set)
def test_import_bytes_keys(self):
# check by ssh types
key = import_key(read_key("ssh-rsa-public.pem"))
self.assertEqual(key.key_type, "RSA")
key = import_key(read_key("ssh-ecdsa-public.pem"))
self.assertEqual(key.key_type, "EC")
key = import_key(read_key("ssh-ed25519-public.pem"))
self.assertEqual(key.key_type, "OKP")
key = import_key("ssh-rsa-oct")
self.assertEqual(key.key_type, "oct")
# check by pem types
key = import_key(read_key("rsa-openssl-public.pem"))
self.assertEqual(key.key_type, "RSA")
key = import_key(read_key("ec-p256-public.pem"))
self.assertEqual(key.key_type, "EC")
key = import_key(read_key("okp-ed448-public.pem"))
self.assertEqual(key.key_type, "OKP")
key = import_key(b"oct-key")
self.assertEqual(key.key_type, "oct")
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