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test.py
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test.py
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#!/usr/bin/env python
import binascii
import unittest
import nacl
if bytes([65]) == b"A": # py3
def bchr(c):
return bytes([c])
else: # py2
def bchr(c):
return chr(c)
def perturb(s):
return s[:-1] + bchr((ord(s[-1:]) + 1) % 256)
class RandomTestCase(unittest.TestCase):
def test_random_10(self):
r = nacl.randombytes(10)
self.assertEqual(len(r), 10)
s = nacl.randombytes(10)
self.assertNotEqual(r, s)
def test_random_1000(self):
r = nacl.randombytes(1000)
self.assertEqual(len(r), 1000)
class HashTestCase(unittest.TestCase):
fox = b"The quick brown fox jumps over the lazy dog."
def check_hash(self, func, s, h):
f = getattr(nacl, func)
r = f(s)
self.assertEqual(binascii.b2a_hex(r).decode("ascii"), h)
def test_sha256_empty(self):
self.check_hash("crypto_hash_sha256", b"",
"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca4959"
"91b7852b855")
def test_sha256_fox(self):
self.check_hash("crypto_hash_sha256", self.fox,
"ef537f25c895bfa782526529a9b63d97aa631564d5d789c2b7654"
"48c8635fb6c")
def test_sha512_empty(self):
self.check_hash("crypto_hash_sha512", b"",
"cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a"
"921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47"
"417a81a538327af927da3e")
def test_sha512_fox(self):
self.check_hash("crypto_hash_sha512", self.fox,
"91ea1245f20d46ae9a037a989f54f1f790f0a47607eeb8a14d128"
"90cea77a1bbc6c7ed9cf205e67b7f2b8fd4c7dfd3a7a8617e45f3"
"c463d481c7e586c39ac1ed")
class BoxTestCase(unittest.TestCase):
msg = b"The quick brown fox jumps over the lazy dog."
def nonce(self):
return nacl.randombytes(nacl.crypto_box_NONCEBYTES)
def setUp(self):
self.pk1, self.sk1 = nacl.crypto_box_keypair()
self.pk2, self.sk2 = nacl.crypto_box_keypair()
def test_key_sizes(self):
self.assertEqual(len(self.pk1), nacl.crypto_box_PUBLICKEYBYTES)
self.assertEqual(len(self.sk1), nacl.crypto_box_SECRETKEYBYTES)
def test_box(self):
nonce = self.nonce()
c = nacl.crypto_box(self.msg, nonce, self.pk2, self.sk1)
m = nacl.crypto_box_open(c, nonce, self.pk1, self.sk2)
self.assertEqual(m, self.msg)
def test_box_badsig(self):
nonce = self.nonce()
c = nacl.crypto_box(self.msg, nonce, self.pk1, self.sk2)
c1 = perturb(c)
self.assertRaises(ValueError, nacl.crypto_box_open, c1, nonce, self.pk2,
self.sk1)
def test_box_badskey(self):
nonce = self.nonce()
c = nacl.crypto_box(self.msg, nonce, self.pk2, perturb(self.sk1))
self.assertRaises(ValueError, nacl.crypto_box_open, c, nonce, self.pk1,
self.sk2)
def test_box_badpkey(self):
nonce = self.nonce()
c = nacl.crypto_box(self.msg, nonce, perturb(self.pk1), self.sk2)
self.assertRaises(ValueError, nacl.crypto_box_open, c, nonce, self.pk2,
self.sk1)
class ScalarMultTestCase(unittest.TestCase):
def setUp(self):
self.sk1 = nacl.randombytes(nacl.crypto_scalarmult_curve25519_BYTES)
self.pk1 = nacl.crypto_scalarmult_curve25519_base(self.sk1)
self.sk2 = nacl.randombytes(nacl.crypto_scalarmult_curve25519_BYTES)
self.pk2 = nacl.crypto_scalarmult_curve25519_base(self.sk2)
def test_dh(self):
"""Check that both shared secrets are the same."""
s1 = nacl.crypto_scalarmult_curve25519(self.sk1, self.pk2)
s2 = nacl.crypto_scalarmult_curve25519(self.sk2, self.pk1)
self.assertEqual(s1, s2)
def test_dh_badkey(self):
s1 = nacl.crypto_scalarmult_curve25519(self.sk1, self.pk2)
s2 = nacl.crypto_scalarmult_curve25519(perturb(self.sk2), self.pk1)
self.assertNotEqual(s1, s2)
def test_sharedkey(self):
dh_a = nacl.crypto_box_keypair()
dh_b = nacl.crypto_box_keypair()
shk_a = nacl.crypto_scalarmult(dh_a[1], dh_b[0])
shk_b = nacl.crypto_scalarmult(dh_b[1], dh_a[0])
self.assertEqual(shk_a, shk_b)
def test_known(self):
sk3 = binascii.a2b_hex("5305ca1802ea41cd48f904e85d97868c"
"c0f30819473cd07727d7c44974bc8e58")
pk3 = nacl.crypto_scalarmult_curve25519_base(sk3)
sk4 = binascii.a2b_hex("fba6870b71790aa6ca40ca1fe29533a4"
"ab09d401b3b2c624ad15d615454ba27a")
pk4 = nacl.crypto_scalarmult_curve25519_base(sk4)
s1 = nacl.crypto_scalarmult_curve25519(sk3, pk4)
s2 = nacl.crypto_scalarmult_curve25519(sk4, pk3)
expected = ("63b564b8218367b7d8d700cdc0d2e23a"
"65ef73905606f9c2e23b00d818c16a7e")
self.assertEqual(binascii.b2a_hex(s1), expected)
self.assertEqual(binascii.b2a_hex(s2), expected)
class SignTestCase(unittest.TestCase):
msg = b"The quick brown fox jumps over the lazy dog."
def setUp(self):
self.pk, self.sk = nacl.crypto_sign_keypair()
self.pk1, self.sk1 = nacl.crypto_sign_keypair_fromseed(b"hello world")
def test_keys_different(self):
self.assertNotEqual(self.pk, self.pk1)
self.assertNotEqual(self.sk, self.sk1)
self.assertNotEqual(self.pk, self.sk)
self.assertNotEqual(self.pk1, self.sk1)
def test_key_length(self):
self.assertEqual(len(self.pk), nacl.crypto_sign_PUBLICKEYBYTES)
self.assertEqual(len(self.sk), nacl.crypto_sign_SECRETKEYBYTES)
def test_seed(self):
self.assertEqual(binascii.b2a_hex(self.pk1).decode("ascii"),
"683d8d0458ef6ec4cfef25157f5d88ce7a0bba334fd102fafc7e"
"2751410d5718")
self.assertEqual(binascii.b2a_hex(self.sk1).decode("ascii"),
"309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee511a7c7a9bcd"
"3ca86d4cd86f989dd35bc5ff499670da34255b45b0cfd830e81f"
"605dcf7dc5542e93ae9cd76f")
def test_signature(self):
sm = nacl.crypto_sign(self.msg, self.sk)
r = nacl.crypto_sign_open(sm, self.pk)
self.assertEqual(r, self.msg)
def test_failed_signature(self):
sm = nacl.crypto_sign(self.msg, self.sk)
self.assertRaises(ValueError, nacl.crypto_sign_open, sm, self.pk1)
class SecretBoxTestCase(unittest.TestCase):
msg = b"The quick brown fox jumps over the lazy dog."
def setUp(self):
self.k = nacl.randombytes(nacl.crypto_secretbox_KEYBYTES)
def test_secretbox(self):
nonce = nacl.randombytes(nacl.crypto_secretbox_NONCEBYTES)
c = nacl.crypto_secretbox(self.msg, nonce, self.k)
m = nacl.crypto_secretbox_open(c, nonce, self.k)
self.assertEqual(m, self.msg)
def test_secretbox_badsig(self):
nonce = nacl.randombytes(nacl.crypto_secretbox_NONCEBYTES)
c = nacl.crypto_secretbox(self.msg, nonce, self.k)
c1 = c[:-1] + bchr((ord(c[-1:]) + 1) % 256)
self.assertRaises(ValueError, nacl.crypto_secretbox_open, c1, nonce,
self.k)
class StreamTestCase(unittest.TestCase):
msg = b"The quick brown fox jumps over the lazy dog."
def setUp(self):
self.k = nacl.randombytes(nacl.crypto_stream_KEYBYTES)
def test_stream(self):
nonce = nacl.randombytes(nacl.crypto_stream_NONCEBYTES)
c = nacl.crypto_stream(1000, nonce, self.k)
self.assertEqual(len(c), 1000)
def test_stream_xor(self):
nonce = nacl.randombytes(nacl.crypto_stream_NONCEBYTES)
c = nacl.crypto_stream_xor(self.msg, nonce, self.k)
m = nacl.crypto_stream_xor(c, nonce, self.k)
self.assertEqual(m, self.msg)
class AuthTestCaseMixin(object):
msg = b"The quick brown fox jumps over the lazy dog."
def attr(self, a):
return getattr(nacl, 'crypto_{0}{1}'.format(self.name, a))
def setUp(self):
self.k = nacl.randombytes(self.attr('_KEYBYTES'))
self.auth = self.attr('')
self.verify = self.attr('_verify')
def test_auth(self):
a = self.auth(self.msg, self.k)
self.assertTrue(self.verify(a, self.msg, self.k))
def test_badkey(self):
a = self.auth(self.msg, perturb(self.k))
self.assertFalse(self.verify(a, self.msg, self.k))
def test_badmsg(self):
a = self.auth(self.msg, self.k)
self.assertFalse(self.verify(perturb(a), self.msg, self.k))
class AuthTestCase(AuthTestCaseMixin, unittest.TestCase):
name = 'auth'
class OneTimeAuthTestCase(AuthTestCaseMixin, unittest.TestCase):
name = 'onetimeauth'
if __name__ == '__main__':
unittest.main()