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import json
import unittest
import pytest
from authlib.jose import JsonWebSignature
from authlib.jose import errors
from tests.util import read_file_path
class JWSTest(unittest.TestCase):
def test_invalid_input(self):
jws = JsonWebSignature()
with pytest.raises(errors.DecodeError):
jws.deserialize("a", "k")
with pytest.raises(errors.DecodeError):
jws.deserialize("a.b.c", "k")
with pytest.raises(errors.DecodeError):
jws.deserialize("YQ.YQ.YQ", "k") # a
with pytest.raises(errors.DecodeError):
jws.deserialize("W10.a.YQ", "k") # []
with pytest.raises(errors.DecodeError):
jws.deserialize("e30.a.YQ", "k") # {}
with pytest.raises(errors.DecodeError):
jws.deserialize("eyJhbGciOiJzIn0.a.YQ", "k")
with pytest.raises(errors.DecodeError):
jws.deserialize("eyJhbGciOiJzIn0.YQ.a", "k")
def test_invalid_alg(self):
jws = JsonWebSignature()
with pytest.raises(errors.UnsupportedAlgorithmError):
jws.deserialize(
"eyJhbGciOiJzIn0.YQ.YQ",
"k",
)
with pytest.raises(errors.MissingAlgorithmError):
jws.serialize({}, "", "k")
with pytest.raises(errors.UnsupportedAlgorithmError):
jws.serialize({"alg": "s"}, "", "k")
def test_bad_signature(self):
jws = JsonWebSignature()
s = "eyJhbGciOiJIUzI1NiJ9.YQ.YQ"
with pytest.raises(errors.BadSignatureError):
jws.deserialize(s, "k")
def test_not_supported_alg(self):
jws = JsonWebSignature(algorithms=["HS256"])
s = jws.serialize({"alg": "HS256"}, "hello", "secret")
jws = JsonWebSignature(algorithms=["RS256"])
with pytest.raises(errors.UnsupportedAlgorithmError):
jws.serialize({"alg": "HS256"}, "hello", "secret")
with pytest.raises(errors.UnsupportedAlgorithmError):
jws.deserialize(s, "secret")
def test_compact_jws(self):
jws = JsonWebSignature(algorithms=["HS256"])
s = jws.serialize({"alg": "HS256"}, "hello", "secret")
data = jws.deserialize(s, "secret")
header, payload = data["header"], data["payload"]
assert payload == b"hello"
assert header["alg"] == "HS256"
assert "signature" not in data
def test_compact_rsa(self):
jws = JsonWebSignature()
private_key = read_file_path("rsa_private.pem")
public_key = read_file_path("rsa_public.pem")
s = jws.serialize({"alg": "RS256"}, "hello", private_key)
data = jws.deserialize(s, public_key)
header, payload = data["header"], data["payload"]
assert payload == b"hello"
assert header["alg"] == "RS256"
# can deserialize with private key
data2 = jws.deserialize(s, private_key)
assert data == data2
ssh_pub_key = read_file_path("ssh_public.pem")
with pytest.raises(errors.BadSignatureError):
jws.deserialize(s, ssh_pub_key)
def test_compact_rsa_pss(self):
jws = JsonWebSignature()
private_key = read_file_path("rsa_private.pem")
public_key = read_file_path("rsa_public.pem")
s = jws.serialize({"alg": "PS256"}, "hello", private_key)
data = jws.deserialize(s, public_key)
header, payload = data["header"], data["payload"]
assert payload == b"hello"
assert header["alg"] == "PS256"
ssh_pub_key = read_file_path("ssh_public.pem")
with pytest.raises(errors.BadSignatureError):
jws.deserialize(s, ssh_pub_key)
def test_compact_none(self):
jws = JsonWebSignature(algorithms=["none"])
s = jws.serialize({"alg": "none"}, "hello", None)
data = jws.deserialize(s, None)
header, payload = data["header"], data["payload"]
assert payload == b"hello"
assert header["alg"] == "none"
def test_flattened_json_jws(self):
jws = JsonWebSignature()
protected = {"alg": "HS256"}
header = {"protected": protected, "header": {"kid": "a"}}
s = jws.serialize(header, "hello", "secret")
assert isinstance(s, dict)
data = jws.deserialize(s, "secret")
header, payload = data["header"], data["payload"]
assert payload == b"hello"
assert header["alg"] == "HS256"
assert "protected" not in data
def test_nested_json_jws(self):
jws = JsonWebSignature()
protected = {"alg": "HS256"}
header = {"protected": protected, "header": {"kid": "a"}}
s = jws.serialize([header], "hello", "secret")
assert isinstance(s, dict)
assert "signatures" in s
data = jws.deserialize(s, "secret")
header, payload = data["header"], data["payload"]
assert payload == b"hello"
assert header[0]["alg"] == "HS256"
assert "signatures" not in data
# test bad signature
with pytest.raises(errors.BadSignatureError):
jws.deserialize(s, "f")
def test_function_key(self):
protected = {"alg": "HS256"}
header = [
{"protected": protected, "header": {"kid": "a"}},
{"protected": protected, "header": {"kid": "b"}},
]
def load_key(header, payload):
assert payload == b"hello"
kid = header.get("kid")
if kid == "a":
return "secret-a"
return "secret-b"
jws = JsonWebSignature()
s = jws.serialize(header, b"hello", load_key)
assert isinstance(s, dict)
assert "signatures" in s
data = jws.deserialize(json.dumps(s), load_key)
header, payload = data["header"], data["payload"]
assert payload == b"hello"
assert header[0]["alg"] == "HS256"
assert "signature" not in data
def test_serialize_json_empty_payload(self):
jws = JsonWebSignature()
protected = {"alg": "HS256"}
header = {"protected": protected, "header": {"kid": "a"}}
s = jws.serialize_json(header, b"", "secret")
data = jws.deserialize_json(s, "secret")
assert data["payload"] == b""
def test_fail_deserialize_json(self):
jws = JsonWebSignature()
with pytest.raises(errors.DecodeError):
jws.deserialize_json(None, "")
with pytest.raises(errors.DecodeError):
jws.deserialize_json("[]", "")
with pytest.raises(errors.DecodeError):
jws.deserialize_json("{}", "")
# missing protected
s = json.dumps({"payload": "YQ"})
with pytest.raises(errors.DecodeError):
jws.deserialize_json(s, "")
# missing signature
s = json.dumps({"payload": "YQ", "protected": "YQ"})
with pytest.raises(errors.DecodeError):
jws.deserialize_json(s, "")
def test_validate_header(self):
jws = JsonWebSignature(private_headers=[])
protected = {"alg": "HS256", "invalid": "k"}
header = {"protected": protected, "header": {"kid": "a"}}
with pytest.raises(errors.InvalidHeaderParameterNameError):
jws.serialize(
header,
b"hello",
"secret",
)
jws = JsonWebSignature(private_headers=["invalid"])
s = jws.serialize(header, b"hello", "secret")
assert isinstance(s, dict)
jws = JsonWebSignature()
s = jws.serialize(header, b"hello", "secret")
assert isinstance(s, dict)
def test_ES512_alg(self):
jws = JsonWebSignature()
private_key = read_file_path("secp521r1-private.json")
public_key = read_file_path("secp521r1-public.json")
with pytest.raises(ValueError):
jws.serialize({"alg": "ES256"}, "hello", private_key)
s = jws.serialize({"alg": "ES512"}, "hello", private_key)
data = jws.deserialize(s, public_key)
header, payload = data["header"], data["payload"]
assert payload == b"hello"
assert header["alg"] == "ES512"
def test_ES256K_alg(self):
jws = JsonWebSignature(algorithms=["ES256K"])
private_key = read_file_path("secp256k1-private.pem")
public_key = read_file_path("secp256k1-pub.pem")
s = jws.serialize({"alg": "ES256K"}, "hello", private_key)
data = jws.deserialize(s, public_key)
header, payload = data["header"], data["payload"]
assert payload == b"hello"
assert header["alg"] == "ES256K"
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