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try: |
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import unittest2 as unittest |
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except ImportError: |
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import unittest |
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import pytest |
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|
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try: |
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from gmpy2 import mpz |
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|
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GMPY = True |
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except ImportError: |
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try: |
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from gmpy import mpz |
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|
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GMPY = True |
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except ImportError: |
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GMPY = False |
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|
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from ._sha3 import shake_256 |
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from ._compat import bytes_to_int, int_to_bytes |
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B2I_VECTORS = [ |
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(b"\x00\x01", "big", 1), |
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(b"\x00\x01", "little", 0x0100), |
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(b"", "big", 0), |
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(b"\x00", "little", 0), |
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] |
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@pytest.mark.parametrize("bytes_in,endian,int_out", B2I_VECTORS) |
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def test_bytes_to_int(bytes_in, endian, int_out): |
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out = bytes_to_int(bytes_in, endian) |
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assert out == int_out |
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class TestBytesToInt(unittest.TestCase): |
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def test_bytes_to_int_wrong_endian(self): |
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with self.assertRaises(ValueError): |
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bytes_to_int(b"\x00", "middle") |
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|
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def test_int_to_bytes_wrong_endian(self): |
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with self.assertRaises(ValueError): |
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int_to_bytes(0, byteorder="middle") |
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@pytest.mark.skipif(GMPY == False, reason="requires gmpy or gmpy2") |
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def test_int_to_bytes_with_gmpy(): |
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assert int_to_bytes(mpz(1)) == b"\x01" |
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I2B_VECTORS = [ |
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(0, None, "big", b""), |
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(0, 1, "big", b"\x00"), |
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(1, None, "big", b"\x01"), |
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(0x0100, None, "little", b"\x00\x01"), |
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(0x0100, 4, "little", b"\x00\x01\x00\x00"), |
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(1, 4, "big", b"\x00\x00\x00\x01"), |
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] |
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|
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@pytest.mark.parametrize("int_in,length,endian,bytes_out", I2B_VECTORS) |
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def test_int_to_bytes(int_in, length, endian, bytes_out): |
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out = int_to_bytes(int_in, length, endian) |
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assert out == bytes_out |
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|
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|
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SHAKE_256_VECTORS = [ |
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( |
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b"Message.", |
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32, |
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b"\x78\xa1\x37\xbb\x33\xae\xe2\x72\xb1\x02\x4f\x39\x43\xe5\xcf\x0c" |
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b"\x4e\x9c\x72\x76\x2e\x34\x4c\xf8\xf9\xc3\x25\x9d\x4f\x91\x2c\x3a", |
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), |
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( |
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b"", |
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32, |
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b"\x46\xb9\xdd\x2b\x0b\xa8\x8d\x13\x23\x3b\x3f\xeb\x74\x3e\xeb\x24" |
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b"\x3f\xcd\x52\xea\x62\xb8\x1b\x82\xb5\x0c\x27\x64\x6e\xd5\x76\x2f", |
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), |
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( |
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b"message", |
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32, |
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b"\x86\x16\xe1\xe4\xcf\xd8\xb5\xf7\xd9\x2d\x43\xd8\x6e\x1b\x14\x51" |
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b"\xa2\xa6\x5a\xf8\x64\xfc\xb1\x26\xc2\x66\x0a\xb3\x46\x51\xb1\x75", |
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), |
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( |
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b"message", |
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16, |
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b"\x86\x16\xe1\xe4\xcf\xd8\xb5\xf7\xd9\x2d\x43\xd8\x6e\x1b\x14\x51", |
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), |
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( |
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b"message", |
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64, |
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b"\x86\x16\xe1\xe4\xcf\xd8\xb5\xf7\xd9\x2d\x43\xd8\x6e\x1b\x14\x51" |
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b"\xa2\xa6\x5a\xf8\x64\xfc\xb1\x26\xc2\x66\x0a\xb3\x46\x51\xb1\x75" |
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b"\x30\xd6\xba\x2a\x46\x65\xf1\x9d\xf0\x62\x25\xb1\x26\xd1\x3e\xed" |
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b"\x91\xd5\x0d\xe7\xb9\xcb\x65\xf3\x3a\x46\xae\xd3\x6c\x7d\xc5\xe8", |
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), |
|
( |
|
b"A" * 1024, |
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32, |
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b"\xa5\xef\x7e\x30\x8b\xe8\x33\x64\xe5\x9c\xf3\xb5\xf3\xba\x20\xa3" |
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b"\x5a\xe7\x30\xfd\xbc\x33\x11\xbf\x83\x89\x50\x82\xb4\x41\xe9\xb3", |
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), |
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] |
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|
|
|
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@pytest.mark.parametrize("msg,olen,ohash", SHAKE_256_VECTORS) |
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def test_shake_256(msg, olen, ohash): |
|
out = shake_256(msg, olen) |
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assert out == bytearray(ohash) |
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|
