def test_get_hash_nested_structure(self):
"""
Ensure a tree like object is recursively hashed to produce a root-hash
value.
"""
child_list = ['bar', 1, 1.234, ]
child_dict = {
'b': False,
'a': None,
'c': True
}
to_hash = {
'foo': child_list,
'baz': child_dict
}
seed_hashes = []
# REMEMBER - in this algorithm the keys to a dict object are ordered.
seed_hashes.append(sha512(b'baz').hexdigest())
seed_hashes.append(_get_hash(child_dict).hexdigest())
seed_hashes.append(sha512(b'foo').hexdigest())
seed_hashes.append(_get_hash(child_list).hexdigest())
seed = ''.join(seed_hashes)
expected = sha512(seed.encode('utf-8'))
actual = _get_hash(to_hash)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_float(self):
"""
Ensure float values are hashed correctly.
"""
expected = sha512(b'12345.6789')
actual = _get_hash(12345.6789)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_str(self):
"""
Strings are hashed correctly
"""
expected = sha512(b"foo")
actual = _get_hash("foo")
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_int(self):
"""
Ensure integer values are hashed correctly.
"""
expected = sha512(b"1234567890987654321234567890987654321")
actual = _get_hash(1234567890987654321234567890987654321)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_float(self):
"""
Ensure float values are hashed correctly.
"""
expected = sha512(b"12345.6789")
actual = _get_hash(12345.6789)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_int(self):
"""
Ensure integer values are hashed correctly.
"""
expected = sha512(b'1234567890987654321234567890987654321')
actual = _get_hash(1234567890987654321234567890987654321)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_str(self):
"""
Strings are hashed correctly
"""
expected = sha512(b'foo')
actual = _get_hash('foo')
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_boolean_true(self):
"""
Ensure hash of Python's True boolean value is a hash of 'true' (since
this is the true value in JSON).
"""
expected = sha512(b'true')
actual = _get_hash(True)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_boolean_false(self):
"""
Ensure hash of Python's False boolean value is a hash of 'false'
(since this is the false value in JSON).
"""
expected = sha512(b'false')
actual = _get_hash(False)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_boolean_false(self):
"""
Ensure hash of Python's False boolean value is a hash of 'false'
(since this is the false value in JSON).
"""
expected = sha512(b"false")
actual = _get_hash(False)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_boolean_true(self):
"""
Ensure hash of Python's True boolean value is a hash of 'true' (since
this is the true value in JSON).
"""
expected = sha512(b"true")
actual = _get_hash(True)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_none(self):
"""
Ensure the hash of Python's None is actually a hash of 'null' (since
this is the null value for JSON).
"""
expected = sha512(b"null")
actual = _get_hash(None)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_none(self):
"""
Ensure the hash of Python's None is actually a hash of 'null' (since
this is the null value for JSON).
"""
expected = sha512(b'null')
actual = _get_hash(None)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_nested_structure(self):
"""
Ensure a tree like object is recursively hashed to produce a root-hash
value.
"""
child_list = ["bar", 1, 1.234]
child_dict = {"b": False, "a": None, "c": True}
to_hash = {"foo": child_list, "baz": child_dict}
seed_hashes = []
# REMEMBER - in this algorithm the keys to a dict object are ordered.
seed_hashes.append(sha512(b"baz").hexdigest())
seed_hashes.append(_get_hash(child_dict).hexdigest())
seed_hashes.append(sha512(b"foo").hexdigest())
seed_hashes.append(_get_hash(child_list).hexdigest())
seed = "".join(seed_hashes)
expected = sha512(seed.encode("utf-8"))
actual = _get_hash(to_hash)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_nested_structure(self):
"""
Ensure a tree like object is recursively hashed to produce a root-hash
value.
"""
child_list = [
'bar',
1,
1.234,
]
child_dict = {'b': False, 'a': None, 'c': True}
to_hash = {'foo': child_list, 'baz': child_dict}
seed_hashes = []
# REMEMBER - in this algorithm the keys to a dict object are ordered.
seed_hashes.append(sha512(b'baz').hexdigest())
seed_hashes.append(_get_hash(child_dict).hexdigest())
seed_hashes.append(sha512(b'foo').hexdigest())
seed_hashes.append(_get_hash(child_list).hexdigest())
seed = ''.join(seed_hashes)
expected = sha512(seed.encode('utf-8'))
actual = _get_hash(to_hash)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_list(self):
"""
Ensure all the items in a list are hashed in the correct order.
"""
to_hash = []
for i in range(5):
to_hash.append(str(uuid.uuid4()))
seed_hashes = []
for item in to_hash:
seed_hashes.append(sha512(item.encode("utf-8")).hexdigest())
seed = "".join(seed_hashes)
expected = sha512(seed.encode("utf-8"))
actual = _get_hash(to_hash)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_list(self):
"""
Ensure all the items in a list are hashed in the correct order.
"""
to_hash = []
for i in range(5):
to_hash.append(str(uuid.uuid4()))
seed_hashes = []
for item in to_hash:
seed_hashes.append(sha512(item.encode('utf-8')).hexdigest())
seed = ''.join(seed_hashes)
expected = sha512(seed.encode('utf-8'))
actual = _get_hash(to_hash)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_seal(self):
"""
Ensure a good "seal" is created for the passed in dict of values
given the supplied private key and appropriate shared public key to
be used to validate the seal.
"""
values = {"foo": "bar", "baz": {"a": 1, "b": True, "c": 3.141, "d": [1, 2, 3]}}
seal = get_seal(values, PRIVATE_KEY)
# Check it's a string and valid hexdecimal value
self.assertIsInstance(seal, str)
self.assertIsInstance(int(seal, 16), int)
# Check it's a seal that can be validated with the correct public key.
sig = binascii.unhexlify(seal.encode("ascii"))
key = rsa.PublicKey.load_pkcs1(PUBLIC_KEY.encode("ascii"))
root_hash = _get_hash(values).hexdigest()
self.assertTrue(rsa.verify(root_hash.encode("ascii"), sig, key))
def test_get_hash_dict(self):
"""
Ensures that the dict is hashed in such a way that the keys are
sorted so the resulting leaf hashes are used in the correct order.
"""
to_hash = {}
for i in range(5):
k = str(uuid.uuid4())
v = str(uuid.uuid4())
to_hash[k] = v
seed_hashes = []
for k in sorted(to_hash):
v = to_hash[k]
seed_hashes.append(sha512(k.encode("utf-8")).hexdigest())
seed_hashes.append(sha512(v.encode("utf-8")).hexdigest())
seed = "".join(seed_hashes)
expected = sha512(seed.encode("utf-8"))
actual = _get_hash(to_hash)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_hash_dict(self):
"""
Ensures that the dict is hashed in such a way that the keys are
sorted so the resulting leaf hashes are used in the correct order.
"""
to_hash = {}
for i in range(5):
k = str(uuid.uuid4())
v = str(uuid.uuid4())
to_hash[k] = v
seed_hashes = []
for k in sorted(to_hash):
v = to_hash[k]
seed_hashes.append(sha512(k.encode('utf-8')).hexdigest())
seed_hashes.append(sha512(v.encode('utf-8')).hexdigest())
seed = ''.join(seed_hashes)
expected = sha512(seed.encode('utf-8'))
actual = _get_hash(to_hash)
self.assertEqual(expected.hexdigest(), actual.hexdigest())
def test_get_seal(self):
"""
Ensure a good "seal" is created for the passed in dict of values
given the supplied private key and appropriate shared public key to
be used to validate the seal.
"""
values = {
'foo': 'bar',
'baz': {
'a': 1,
'b': True,
'c': 3.141,
'd': [1, 2, 3]
},
}
seal = get_seal(values, PRIVATE_KEY)
# Check it's a string and valid hexdecimal value
self.assertIsInstance(seal, str)
self.assertIsInstance(int(seal, 16), int)
# Check it's a seal that can be validated with the correct public key.
sig = binascii.unhexlify(seal.encode('ascii'))
key = rsa.PublicKey.load_pkcs1(PUBLIC_KEY.encode('ascii'))
root_hash = _get_hash(values).hexdigest()
self.assertTrue(rsa.verify(root_hash.encode('ascii'), sig, key))