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# -*- coding: utf-8 -*-
#
# Copyright (C) 2019-2022 Matthias Klumpp <matthias@tenstral.net>
# Copyright (C) 2014-2015 OpenMarket Ltd
#
# SPDX-License-Identifier: LGPL-3.0+ AND Apache-2.0
import pytest
import nacl.signing
from laniakea.utils import decode_base64, encode_base64
from laniakea.msgstream.signing import (
get_verify_key,
read_signing_keys,
write_signing_keys,
generate_signing_key,
read_old_signing_keys,
decode_verify_key_bytes,
encode_verify_key_base64,
decode_signing_key_base64,
encode_signing_key_base64,
is_signing_algorithm_supported,
)
from laniakea.msgstream.signedjson import (
SignatureVerifyException,
sign_json,
signature_ids,
verify_signed_json,
)
class TestGenerate:
def test_generate_key(self):
my_version = "my_version"
my_key = generate_signing_key(my_version)
assert my_key.alg == "ed25519"
assert my_key.version == my_version
class TestDecode:
def setup_method(self, test_method):
self.version = "my_version"
self.key = generate_signing_key(self.version)
self.key_base64 = encode_signing_key_base64(self.key)
self.verify_key = get_verify_key(self.key)
self.verify_key_base64 = encode_verify_key_base64(self.verify_key)
def test_decode(self):
decoded_key = decode_signing_key_base64("ed25519", self.key_base64, self.version)
assert decoded_key.alg == "ed25519"
assert decoded_key.version == self.version
def test_decode_invalid_base64(self):
with pytest.raises(Exception):
decode_signing_key_base64("ed25519", "not base 64", self.version)
def test_decode_signing_invalid_algorithm(self):
with pytest.raises(Exception):
decode_signing_key_base64("not a valid alg", "", self.version)
def test_decode_invalid_key(self):
with pytest.raises(Exception):
decode_signing_key_base64("ed25519", "", self.version)
def test_read_keys(self):
stream = ["ed25519 %s %s" % (self.version, self.key_base64)]
keys = read_signing_keys(stream)
assert len(keys) == 1
def test_read_old_keys(self):
stream = ["ed25519 %s 0 %s" % (self.version, self.verify_key_base64)]
keys = read_old_signing_keys(stream)
assert len(keys) == 1
def test_decode_verify_invalid_algorithm(self):
with pytest.raises(Exception):
decode_verify_key_bytes("not a valid alg", self.verify_key)
def test_write_signing_keys(self):
class MockStream:
def write(self, data):
pass
write_signing_keys(MockStream(), [self.key])
class TestAlgorithmSupported:
def test_ed25519(self):
assert is_signing_algorithm_supported("ed25519:an_id")
def test_unsupported(self):
assert not is_signing_algorithm_supported("unsupported:")
SIGNING_KEY_SEED = decode_base64("YJDBA9Xnr2sVqXD9Vj7XVUnmFZcZrlw8Md7kMW+3XA1")
KEY_ALG = "ed25519"
KEY_VER = 1
KEY_NAME = "%s:%d" % (KEY_ALG, KEY_VER)
class TestKnownKey:
'''
An entirely deterministic test using a given signing key seed, so that
other implementations can compare that they get the same result.
'''
def setup_method(self, test_method):
self.signing_key = nacl.signing.SigningKey(SIGNING_KEY_SEED)
self.signing_key.alg = KEY_ALG
self.signing_key.version = KEY_VER
def test_sign_minimal(self):
res = {
'signatures': {
'domain': {
KEY_NAME: "K8280/U9SSy9IVtjBuVeLr+HpOB4BQFWbg+UZaADMt"
"TdGYI7Geitb76LTrr5QV/7Xg4ahLwYGYZzuHGZKM5ZAQ"
},
}
}
assert sign_json({}, "domain", self.signing_key) == res
def test_sign_with_data(self):
res = {
'one': 1,
'two': "Two",
'signatures': {
'domain': {
KEY_NAME: "KqmLSbO39/Bzb0QIYE82zqLwsA+PDzYIpIRA2sRQ4s"
"L53+sN6/fpNSoqE7BP7vBZhG6kYdD13EIMJpvhJI+6Bw"
},
},
}
assert sign_json({'one': 1, 'two': "Two"}, "domain", self.signing_key) == res
class MockSigningKey:
alg = "mock"
version = "test"
def sign(self, signed_bytes):
self.signed_bytes = signed_bytes
return MockSignature()
class MockVerifyKey:
alg = "mock"
version = "test"
def verify(self, message, sig):
if not sig == b"x_______":
raise Exception()
class MockSignature:
def __init__(self):
self.signature = b"x_______"
class TestJsonSign:
def setup_method(self, test_method):
self.message = {'foo': 'bar', 'unsigned': {}}
self.sigkey = MockSigningKey()
assert self.sigkey.alg == 'mock'
self.signed = sign_json(self.message, 'Alice', self.sigkey)
self.verkey = MockVerifyKey()
def test_sign_and_verify(self):
assert 'signatures' in self.signed
assert 'Alice' in self.signed['signatures']
assert 'mock:test' in self.signed['signatures']['Alice']
assert self.signed['signatures']['Alice']['mock:test'] == encode_base64(b'x_______')
assert self.sigkey.signed_bytes == b'{"foo":"bar"}'
verify_signed_json(self.signed, 'Alice', self.verkey)
def test_signature_ids(self):
key_ids = signature_ids(self.signed, 'Alice', supported_algorithms=['mock'])
assert key_ids == ['mock:test']
def test_verify_fail(self):
self.signed['signatures']['Alice']['mock:test'] = encode_base64(b'not a signature')
with pytest.raises(SignatureVerifyException):
verify_signed_json(self.signed, 'Alice', self.verkey)
def test_verify_fail_no_signatures(self):
with pytest.raises(SignatureVerifyException):
verify_signed_json({}, 'Alice', self.verkey)
def test_verify_fail_no_signature_for_alice(self):
with pytest.raises(SignatureVerifyException):
verify_signed_json({'signatures': {}}, 'Alice', self.verkey)
def test_verify_fail_not_base64(self):
invalid = {'signatures': {'Alice': {'mock:test': 'not base64'}}}
with pytest.raises(SignatureVerifyException):
verify_signed_json(invalid, 'Alice', self.verkey)
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