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Diffstat (limited to 'freezed_deps/ecdsa/test_der.py')
| -rw-r--r-- | freezed_deps/ecdsa/test_der.py | 384 |
1 files changed, 0 insertions, 384 deletions
diff --git a/freezed_deps/ecdsa/test_der.py b/freezed_deps/ecdsa/test_der.py deleted file mode 100644 index e6cd593..0000000 --- a/freezed_deps/ecdsa/test_der.py +++ /dev/null @@ -1,384 +0,0 @@ - -# compatibility with Python 2.6, for that we need unittest2 package, -# which is not available on 3.3 or 3.4 -import warnings -from binascii import hexlify -try: - import unittest2 as unittest -except ImportError: - import unittest -from six import b -import hypothesis.strategies as st -from hypothesis import given, example -import pytest -from ._compat import str_idx_as_int -from .curves import NIST256p, NIST224p -from .der import remove_integer, UnexpectedDER, read_length, encode_bitstring,\ - remove_bitstring, remove_object, encode_oid - - -class TestRemoveInteger(unittest.TestCase): - # DER requires the integers to be 0-padded only if they would be - # interpreted as negative, check if those errors are detected - def test_non_minimal_encoding(self): - with self.assertRaises(UnexpectedDER): - remove_integer(b('\x02\x02\x00\x01')) - - def test_negative_with_high_bit_set(self): - with self.assertRaises(UnexpectedDER): - remove_integer(b('\x02\x01\x80')) - - def test_minimal_with_high_bit_set(self): - val, rem = remove_integer(b('\x02\x02\x00\x80')) - - self.assertEqual(val, 0x80) - self.assertFalse(rem) - - def test_two_zero_bytes_with_high_bit_set(self): - with self.assertRaises(UnexpectedDER): - remove_integer(b('\x02\x03\x00\x00\xff')) - - def test_zero_length_integer(self): - with self.assertRaises(UnexpectedDER): - remove_integer(b('\x02\x00')) - - def test_empty_string(self): - with self.assertRaises(UnexpectedDER): - remove_integer(b('')) - - def test_encoding_of_zero(self): - val, rem = remove_integer(b('\x02\x01\x00')) - - self.assertEqual(val, 0) - self.assertFalse(rem) - - def test_encoding_of_127(self): - val, rem = remove_integer(b('\x02\x01\x7f')) - - self.assertEqual(val, 127) - self.assertFalse(rem) - - def test_encoding_of_128(self): - val, rem = remove_integer(b('\x02\x02\x00\x80')) - - self.assertEqual(val, 128) - self.assertFalse(rem) - - -class TestReadLength(unittest.TestCase): - # DER requires the lengths between 0 and 127 to be encoded using the short - # form and lengths above that encoded with minimal number of bytes - # necessary - def test_zero_length(self): - self.assertEqual((0, 1), read_length(b('\x00'))) - - def test_two_byte_zero_length(self): - with self.assertRaises(UnexpectedDER): - read_length(b('\x81\x00')) - - def test_two_byte_small_length(self): - with self.assertRaises(UnexpectedDER): - read_length(b('\x81\x7f')) - - def test_long_form_with_zero_length(self): - with self.assertRaises(UnexpectedDER): - read_length(b('\x80')) - - def test_smallest_two_byte_length(self): - self.assertEqual((128, 2), read_length(b('\x81\x80'))) - - def test_zero_padded_length(self): - with self.assertRaises(UnexpectedDER): - read_length(b('\x82\x00\x80')) - - def test_two_three_byte_length(self): - self.assertEqual((256, 3), read_length(b'\x82\x01\x00')) - - def test_empty_string(self): - with self.assertRaises(UnexpectedDER): - read_length(b('')) - - def test_length_overflow(self): - with self.assertRaises(UnexpectedDER): - read_length(b('\x83\x01\x00')) - - -class TestEncodeBitstring(unittest.TestCase): - # DER requires BIT STRINGS to include a number of padding bits in the - # encoded byte string, that padding must be between 0 and 7 - - def test_old_call_convention(self): - """This is the old way to use the function.""" - warnings.simplefilter('always') - with pytest.warns(DeprecationWarning) as warns: - der = encode_bitstring(b'\x00\xff') - - self.assertEqual(len(warns), 1) - self.assertIn("unused= needs to be specified", - warns[0].message.args[0]) - - self.assertEqual(der, b'\x03\x02\x00\xff') - - def test_new_call_convention(self): - """This is how it should be called now.""" - warnings.simplefilter('always') - with pytest.warns(None) as warns: - der = encode_bitstring(b'\xff', 0) - - # verify that new call convention doesn't raise Warnings - self.assertEqual(len(warns), 0) - - self.assertEqual(der, b'\x03\x02\x00\xff') - - def test_implicit_unused_bits(self): - """ - Writing bit string with already included the number of unused bits. - """ - warnings.simplefilter('always') - with pytest.warns(None) as warns: - der = encode_bitstring(b'\x00\xff', None) - - # verify that new call convention doesn't raise Warnings - self.assertEqual(len(warns), 0) - - self.assertEqual(der, b'\x03\x02\x00\xff') - - def test_explicit_unused_bits(self): - der = encode_bitstring(b'\xff\xf0', 4) - - self.assertEqual(der, b'\x03\x03\x04\xff\xf0') - - def test_empty_string(self): - self.assertEqual(encode_bitstring(b'', 0), b'\x03\x01\x00') - - def test_invalid_unused_count(self): - with self.assertRaises(ValueError): - encode_bitstring(b'\xff\x00', 8) - - def test_invalid_unused_with_empty_string(self): - with self.assertRaises(ValueError): - encode_bitstring(b'', 1) - - def test_non_zero_padding_bits(self): - with self.assertRaises(ValueError): - encode_bitstring(b'\xff', 2) - - -class TestRemoveBitstring(unittest.TestCase): - def test_old_call_convention(self): - """This is the old way to call the function.""" - warnings.simplefilter('always') - with pytest.warns(DeprecationWarning) as warns: - bits, rest = remove_bitstring(b'\x03\x02\x00\xff') - - self.assertEqual(len(warns), 1) - self.assertIn("expect_unused= needs to be specified", - warns[0].message.args[0]) - - self.assertEqual(bits, b'\x00\xff') - self.assertEqual(rest, b'') - - def test_new_call_convention(self): - warnings.simplefilter('always') - with pytest.warns(None) as warns: - bits, rest = remove_bitstring(b'\x03\x02\x00\xff', 0) - - self.assertEqual(len(warns), 0) - - self.assertEqual(bits, b'\xff') - self.assertEqual(rest, b'') - - def test_implicit_unexpected_unused(self): - warnings.simplefilter('always') - with pytest.warns(None) as warns: - bits, rest = remove_bitstring(b'\x03\x02\x00\xff', None) - - self.assertEqual(len(warns), 0) - - self.assertEqual(bits, (b'\xff', 0)) - self.assertEqual(rest, b'') - - def test_with_padding(self): - ret, rest = remove_bitstring(b'\x03\x02\x04\xf0', None) - - self.assertEqual(ret, (b'\xf0', 4)) - self.assertEqual(rest, b'') - - def test_not_a_bitstring(self): - with self.assertRaises(UnexpectedDER): - remove_bitstring(b'\x02\x02\x00\xff', None) - - def test_empty_encoding(self): - with self.assertRaises(UnexpectedDER): - remove_bitstring(b'\x03\x00', None) - - def test_empty_string(self): - with self.assertRaises(UnexpectedDER): - remove_bitstring(b'', None) - - def test_no_length(self): - with self.assertRaises(UnexpectedDER): - remove_bitstring(b'\x03', None) - - def test_unexpected_number_of_unused_bits(self): - with self.assertRaises(UnexpectedDER): - remove_bitstring(b'\x03\x02\x00\xff', 1) - - def test_invalid_encoding_of_unused_bits(self): - with self.assertRaises(UnexpectedDER): - remove_bitstring(b'\x03\x03\x08\xff\x00', None) - - def test_invalid_encoding_of_empty_string(self): - with self.assertRaises(UnexpectedDER): - remove_bitstring(b'\x03\x01\x01', None) - - def test_invalid_padding_bits(self): - with self.assertRaises(UnexpectedDER): - remove_bitstring(b'\x03\x02\x01\xff', None) - - -class TestStrIdxAsInt(unittest.TestCase): - def test_str(self): - self.assertEqual(115, str_idx_as_int('str', 0)) - - def test_bytes(self): - self.assertEqual(115, str_idx_as_int(b'str', 0)) - - def test_bytearray(self): - self.assertEqual(115, str_idx_as_int(bytearray(b'str'), 0)) - - -class TestEncodeOid(unittest.TestCase): - def test_pub_key_oid(self): - oid_ecPublicKey = encode_oid(1, 2, 840, 10045, 2, 1) - self.assertEqual(hexlify(oid_ecPublicKey), b("06072a8648ce3d0201")) - - def test_nist224p_oid(self): - self.assertEqual(hexlify(NIST224p.encoded_oid), b("06052b81040021")) - - def test_nist256p_oid(self): - self.assertEqual(hexlify(NIST256p.encoded_oid), - b"06082a8648ce3d030107") - - def test_large_second_subid(self): - # from X.690, section 8.19.5 - oid = encode_oid(2, 999, 3) - self.assertEqual(oid, b'\x06\x03\x88\x37\x03') - - def test_with_two_subids(self): - oid = encode_oid(2, 999) - self.assertEqual(oid, b'\x06\x02\x88\x37') - - def test_zero_zero(self): - oid = encode_oid(0, 0) - self.assertEqual(oid, b'\x06\x01\x00') - - def test_with_wrong_types(self): - with self.assertRaises((TypeError, AssertionError)): - encode_oid(0, None) - - def test_with_small_first_large_second(self): - with self.assertRaises(AssertionError): - encode_oid(1, 40) - - def test_small_first_max_second(self): - oid = encode_oid(1, 39) - self.assertEqual(oid, b'\x06\x01\x4f') - - def test_with_invalid_first(self): - with self.assertRaises(AssertionError): - encode_oid(3, 39) - - -class TestRemoveObject(unittest.TestCase): - @classmethod - def setUpClass(cls): - cls.oid_ecPublicKey = encode_oid(1, 2, 840, 10045, 2, 1) - - def test_pub_key_oid(self): - oid, rest = remove_object(self.oid_ecPublicKey) - self.assertEqual(rest, b'') - self.assertEqual(oid, (1, 2, 840, 10045, 2, 1)) - - def test_with_extra_bytes(self): - oid, rest = remove_object(self.oid_ecPublicKey + b'more') - self.assertEqual(rest, b'more') - self.assertEqual(oid, (1, 2, 840, 10045, 2, 1)) - - def test_with_large_second_subid(self): - # from X.690, section 8.19.5 - oid, rest = remove_object(b'\x06\x03\x88\x37\x03') - self.assertEqual(rest, b'') - self.assertEqual(oid, (2, 999, 3)) - - def test_with_padded_first_subid(self): - with self.assertRaises(UnexpectedDER): - remove_object(b'\x06\x02\x80\x00') - - def test_with_padded_second_subid(self): - with self.assertRaises(UnexpectedDER): - remove_object(b'\x06\x04\x88\x37\x80\x01') - - def test_with_missing_last_byte_of_multi_byte(self): - with self.assertRaises(UnexpectedDER): - remove_object(b'\x06\x03\x88\x37\x83') - - def test_with_two_subids(self): - oid, rest = remove_object(b'\x06\x02\x88\x37') - self.assertEqual(rest, b'') - self.assertEqual(oid, (2, 999)) - - def test_zero_zero(self): - oid, rest = remove_object(b'\x06\x01\x00') - self.assertEqual(rest, b'') - self.assertEqual(oid, (0, 0)) - - def test_empty_string(self): - with self.assertRaises(UnexpectedDER): - remove_object(b'') - - def test_missing_length(self): - with self.assertRaises(UnexpectedDER): - remove_object(b'\x06') - - def test_empty_oid(self): - with self.assertRaises(UnexpectedDER): - remove_object(b'\x06\x00') - - def test_empty_oid_overflow(self): - with self.assertRaises(UnexpectedDER): - remove_object(b'\x06\x01') - - def test_with_wrong_type(self): - with self.assertRaises(UnexpectedDER): - remove_object(b'\x04\x02\x88\x37') - - def test_with_too_long_length(self): - with self.assertRaises(UnexpectedDER): - remove_object(b'\x06\x03\x88\x37') - - -@st.composite -def st_oid(draw, max_value=2**512, max_size=50): - """ - Hypothesis strategy that returns valid OBJECT IDENTIFIERs as tuples - - :param max_value: maximum value of any single sub-identifier - :param max_size: maximum length of the generated OID - """ - first = draw(st.integers(min_value=0, max_value=2)) - if first < 2: - second = draw(st.integers(min_value=0, max_value=39)) - else: - second = draw(st.integers(min_value=0, max_value=max_value)) - rest = draw(st.lists(st.integers(min_value=0, max_value=max_value), - max_size=max_size)) - return (first, second) + tuple(rest) - - -@given(st_oid()) -def test_oids(ids): - encoded_oid = encode_oid(*ids) - decoded_oid, rest = remove_object(encoded_oid) - assert rest == b'' - assert decoded_oid == ids |