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# coding=utf-8
# Copyright (c) 2013 Yubico AB
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or
# without modification, are permitted provided that the following
# conditions are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
import unittest
from fido2.utils import hmac_sha256, sha256, websafe_encode, websafe_decode
class TestSha256(unittest.TestCase):
def test_sha256_vectors(self):
self.assertEqual(
sha256(b"abc"),
bytes.fromhex(
"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"
),
)
self.assertEqual(
sha256(b"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq"),
bytes.fromhex(
"248d6a61d20638b8e5c026930c3e6039a33ce45964ff2167f6ecedd419db06c1"
),
)
class TestHmacSha256(unittest.TestCase):
def test_hmac_sha256_vectors(self):
self.assertEqual(
hmac_sha256(b"\x0b" * 20, b"Hi There"),
bytes.fromhex(
"b0344c61d8db38535ca8afceaf0bf12b881dc200c9833da726e9376c2e32cff7"
),
)
self.assertEqual(
hmac_sha256(b"Jefe", b"what do ya want for nothing?"),
bytes.fromhex(
"5bdcc146bf60754e6a042426089575c75a003f089d2739839dec58b964ec3843"
),
)
class TestWebSafe(unittest.TestCase):
# Base64 vectors adapted from https://tools.ietf.org/html/rfc4648#section-10
def test_websafe_decode(self):
self.assertEqual(websafe_decode(b""), b"")
self.assertEqual(websafe_decode(b"Zg"), b"f")
self.assertEqual(websafe_decode(b"Zm8"), b"fo")
self.assertEqual(websafe_decode(b"Zm9v"), b"foo")
self.assertEqual(websafe_decode(b"Zm9vYg"), b"foob")
self.assertEqual(websafe_decode(b"Zm9vYmE"), b"fooba")
self.assertEqual(websafe_decode(b"Zm9vYmFy"), b"foobar")
def test_websafe_decode_unicode(self):
self.assertEqual(websafe_decode(""), b"")
self.assertEqual(websafe_decode("Zm9vYmFy"), b"foobar")
def test_websafe_encode(self):
self.assertEqual(websafe_encode(b""), "")
self.assertEqual(websafe_encode(b"f"), "Zg")
self.assertEqual(websafe_encode(b"fo"), "Zm8")
self.assertEqual(websafe_encode(b"foo"), "Zm9v")
self.assertEqual(websafe_encode(b"foob"), "Zm9vYg")
self.assertEqual(websafe_encode(b"fooba"), "Zm9vYmE")
self.assertEqual(websafe_encode(b"foobar"), "Zm9vYmFy")
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