def test_digest_TLS1_0(self):
hh = HandshakeHashes()
self.assertEqual(
b'\xd4\x1d\x8c\xd9\x8f\x00\xb2\x04\xe9\x80\t\x98\xec\xf8B~\xda'\
b'9\xa3\xee^kK\r2U\xbf\xef\x95`\x18\x90\xaf\xd8\x07\t',
hh.digest())
def test_digest_TLS1_0(self):
hh = HandshakeHashes()
self.assertEqual(
b'\xd4\x1d\x8c\xd9\x8f\x00\xb2\x04\xe9\x80\t\x98\xec\xf8B~\xda'\
b'9\xa3\xee^kK\r2U\xbf\xef\x95`\x18\x90\xaf\xd8\x07\t',
hh.digest())
def test_copy(self):
hh = HandshakeHashes()
hh.update(b'text')
hh2 = hh.copy()
self.assertEqual(hh2.digest(), hh.digest())
def test_digest_sha256(self):
hh = HandshakeHashes()
self.assertEqual(
b"\xe3\xb0\xc4B\x98\xfc\x1c\x14\x9a\xfb\xf4\xc8\x99o\xb9$'\xae"\
b"A\xe4d\x9b\x93L\xa4\x95\x99\x1bxR\xb8U",
hh.digest('sha256'))
def test_digest_SSL3(self):
hh = HandshakeHashes()
self.assertEqual(bytearray(
b'\xb5Q\x15\xa4\xcd\xff\xfdF\xa6\x9c\xe2\x0f\x83~\x948\xc3\xb5'\
b'\xc1\x8d\xb6|\x10n@a\x97\xccG\xfeI\xa8s T\\'),
hh.digestSSL(bytearray(48), b''))
def test_digest_SSL3(self):
hh = HandshakeHashes()
self.assertEqual(bytearray(
b'\xb5Q\x15\xa4\xcd\xff\xfdF\xa6\x9c\xe2\x0f\x83~\x948\xc3\xb5'\
b'\xc1\x8d\xb6|\x10n@a\x97\xccG\xfeI\xa8s T\\'),
hh.digestSSL(bytearray(48), b''))
class TestCalcExtendedMasterSecret(unittest.TestCase):
def setUp(self):
self.handshakeHashes = HandshakeHashes()
self.handshakeHashes.update(bytearray(48))
def test_with_TLS_1_0(self):
ret = calcExtendedMasterSecret((3, 1), 0, bytearray(48),
self.handshakeHashes)
self.assertEqual(
ret,
bytearray(
b'/\xe9\x86\xda\xda\xa9)\x1eyJ\xc9\x13E\xe4\xfc\xe7\x842m7(\xb4'
b'\x98\xb7\xbc\xa5\xda\x1d\xf3\x15\xea\xdf:i\xeb\x9bA\x8f\xe7'
b'\xd4<\xe0\xe8\x1d\xa0\xf0\x10\x83'))
def test_with_TLS_1_2(self):
ret = calcExtendedMasterSecret((3, 3), 0, bytearray(48),
self.handshakeHashes)
self.assertEqual(
ret,
bytearray(
b'\x03\xc93Yx\xcbjSEmz*\x0b\xc3\xc04G\xf3\xe3{\xee\x13\x8b\xac'
b'\xd7\xb7\xe6\xbaY\x86\xd5\xf2o?\x8f\xc6\xf2\x19\x1d\x06\xe0N'
b'\xb5\xcaJX\xe8\x1d'))
def test_with_TLS_1_2_and_SHA384_PRF(self):
ret = calcExtendedMasterSecret(
(3, 3), CipherSuite.TLS_RSA_WITH_AES_256_GCM_SHA384, bytearray(48),
self.handshakeHashes)
self.assertEqual(
ret,
bytearray(
b"\xd6\xed}K\xfbo\xb2\xdb\xa4\xee\xa1\x0f\x8f\x07*\x84w/\xbf_"
b"\xbd\xc1U^\x93\xcf\xe8\xca\x82\xb7_B\xa3O\xd9V\x86\x12\xfd\x08"
b"$\x92\'L\xae\xc0@\x01"))
def setUp(self):
cert_chain = X509CertChain([X509().parse(srv_raw_certificate)])
self.clnt_pub_key = cert_chain.getEndEntityPublicKey()
self.cipher_suite = CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA
self.clnt_private_key = parsePEMKey(srv_raw_key, private=True)
self.handshake_hashes = HandshakeHashes()
self.handshake_hashes.update(bytearray(b'\xab'*32))
def test_digest_sha256(self):
hh = HandshakeHashes()
self.assertEqual(
b"\xe3\xb0\xc4B\x98\xfc\x1c\x14\x9a\xfb\xf4\xc8\x99o\xb9$'\xae"\
b"A\xe4d\x9b\x93L\xa4\x95\x99\x1bxR\xb8U",
hh.digest('sha256'))
def test_digest_sha224(self):
hh = HandshakeHashes()
self.assertEqual((
b'\xd1J\x02\x8c*:+\xc9Ga\x02\xbb(\x824\xc4\x15\xa2\xb0'
b'\x1f\x82\x8e\xa6*\xc5\xb3\xe4/'),
hh.digest('sha224'))
def test_digest_sha512(self):
hh = HandshakeHashes()
self.assertEqual(
(b'\xcf\x83\xe15~\xef\xb8\xbd\xf1T(P\xd6m\x80\x07\xd6 '
b'\xe4\x05\x0bW\x15\xdc\x83\xf4\xa9!\xd3l\xe9\xceG\xd0'
b'\xd1<]\x85\xf2\xb0\xff\x83\x18\xd2\x87~\xec/c\xb91'
b'\xbdGAz\x81\xa582z\xf9\'\xda>'), hh.digest('sha512'))
def test_digest_with_repeated_calls(self):
hh = HandshakeHashes()
hh.update(b'text')
self.assertEqual(hh.digest(), hh.digest())
hh.update(b'ext')
self.assertEqual(hh.digest('sha256'), hh.digest('sha256'))
def test_digest_with_partial_writes(self):
hh = HandshakeHashes()
hh.update(b'text')
hh2 = HandshakeHashes()
hh2.update(b'te')
hh2.update(b'xt')
self.assertEqual(hh.digest(), hh2.digest())
def test_digest_sha512(self):
hh = HandshakeHashes()
self.assertEqual((
b'\xcf\x83\xe15~\xef\xb8\xbd\xf1T(P\xd6m\x80\x07\xd6 '
b'\xe4\x05\x0bW\x15\xdc\x83\xf4\xa9!\xd3l\xe9\xceG\xd0'
b'\xd1<]\x85\xf2\xb0\xff\x83\x18\xd2\x87~\xec/c\xb91'
b'\xbdGAz\x81\xa582z\xf9\'\xda>'),
hh.digest('sha512'))
def test_with_handshake_hashes(self):
secret = bytearray(32)
label = bytearray(b'exporter')
handshake_hashes = HandshakeHashes()
handshake_hashes.update(bytearray(8))
algorithm = "sha256"
self.assertEqual(derive_secret(secret, label, handshake_hashes,
algorithm),
bytearray(b'\t\xec\x01W[Y\xdcP\xac\xebu\x13\xe6\x98'
b'\x19\xccu;\xfa\x90\xc9\xe3\xc1\xe7\xb7'
b'\xcf\x0c\x97;x\xf0F'))
def test_with_handshake_hashes(self):
secret = bytearray(32)
label = bytearray(b'exporter')
handshake_hashes = HandshakeHashes()
handshake_hashes.update(bytearray(8))
algorithm = "sha256"
self.assertEqual(
derive_secret(secret, label, handshake_hashes, algorithm),
bytearray(b'\t\xec\x01W[Y\xdcP\xac\xebu\x13\xe6\x98'
b'\x19\xccu;\xfa\x90\xc9\xe3\xc1\xe7\xb7'
b'\xcf\x0c\x97;x\xf0F'))
def test_digest_with_repeated_calls(self):
hh = HandshakeHashes()
hh.update(b'text')
self.assertEqual(hh.digest(), hh.digest())
hh.update(b'ext')
self.assertEqual(hh.digest('sha256'), hh.digest('sha256'))
def __init__(self):
"""Prepare object for keeping connection state"""
self.msg_sock = None
# cipher negotiated in connection
self.cipher = 0
# version proposed in client hello, and later negotiated in connection
self.version = (3, 3)
# hashes of all handshake messages exchanged so far
self.handshake_hashes = HandshakeHashes()
# all handshake messages exchanged so far
self.handshake_messages = []
# are we a client or server side of connection (influences just the
# way encryption and MAC keys are calculated)
self.client = True
# calculated value for premaster secret
self.premaster_secret = bytearray(0)
# negotiated value for master secret
self.master_secret = bytearray(0)
# random values shared by peers
self.server_random = bytearray(0)
self.client_random = bytearray(0)
# Finished message data for secure renegotiation
self.client_verify_data = bytearray(0)
self.server_verify_data = bytearray(0)
def setUp(self):
cert_chain = X509CertChain([X509().parse(srv_raw_certificate)])
self.clnt_pub_key = cert_chain.getEndEntityPublicKey()
self.cipher_suite = CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA
self.clnt_private_key = parsePEMKey(srv_raw_key, private=True)
self.handshake_hashes = HandshakeHashes()
self.handshake_hashes.update(bytearray(b'\xab'*32))
def test_digest_with_partial_writes(self):
hh = HandshakeHashes()
hh.update(b'text')
hh2 = HandshakeHashes()
hh2.update(b'te')
hh2.update(b'xt')
self.assertEqual(hh.digest(), hh2.digest())
def __init__(self):
"""Prepare object for keeping connection state"""
self.msg_sock = None
# cipher negotiated in connection
self.cipher = 0
# version proposed in client hello
self.client_version = (3, 3)
# version negotiated in connection
self.version = (3, 3)
# hashes of all handshake messages exchanged so far
self.handshake_hashes = HandshakeHashes()
# hash of all messages exchanged up to Certificate Verify, if CV was
# used on connection
self.certificate_verify_handshake_hashes = None
# all handshake messages exchanged so far
self.handshake_messages = []
# are we a client or server side of connection (influences just the
# way encryption and MAC keys are calculated)
self.client = True
# calculated value for premaster secret
self.premaster_secret = bytearray(0)
# negotiated value for master secret
self.master_secret = bytearray(0)
# random values shared by peers
self.server_random = bytearray(0)
self.client_random = bytearray(0)
# session ID set by server
self.session_id = bytearray(0)
# Finished message data for secure renegotiation
self.client_verify_data = bytearray(0)
self.server_verify_data = bytearray(0)
# Whether we are currently resuming a previously negotiated session
self.resuming = False
# variable holding the intermediate state for DHE (and similar) key
# exchanges
self.key_exchange = None
# Whether the session we're currently using is using extended master
# secret calculation defined in RFC 7627
self.extended_master_secret = False
# Whether the session we're currently using is using
# EncryptThenMAC extension defined in RFC 7366
self.encrypt_then_mac = False
class TestCalcVerifyBytes(unittest.TestCase):
def setUp(self):
self.handshake_hashes = HandshakeHashes()
self.handshake_hashes.update(bytearray(b'\xab'*32))
def test_with_TLS1_2(self):
vrfy = KeyExchange.calcVerifyBytes((3, 3),
self.handshake_hashes,
(HashAlgorithm.sha1,
SignatureAlgorithm.rsa),
None,
None,
None)
self.assertEqual(vrfy, bytearray(
# PKCS#1 prefix
b'0!0\t\x06\x05+\x0e\x03\x02\x1a\x05\x00\x04\x14'
# SHA1 hash
b'L3\x81\xad\x1b\xc2\x14\xc0\x8e\xba\xe4\xb8\xa2\x9d(6V1\xfb\xb0'))
def test_with_TLS1_1(self):
vrfy = KeyExchange.calcVerifyBytes((3, 2),
self.handshake_hashes,
None, None, None, None)
self.assertEqual(vrfy, bytearray(
# MD5 hash
b'\xe9\x9f\xb4\xd24\xe9\xf41S\xe6?\xa5\xfe\xad\x16\x14'
# SHA1 hash
b'L3\x81\xad\x1b\xc2\x14\xc0\x8e\xba\xe4\xb8\xa2\x9d(6V1\xfb\xb0'
))
def test_with_SSL3(self):
vrfy = KeyExchange.calcVerifyBytes((3, 0),
self.handshake_hashes,
None,
bytearray(b'\x04'*48),
bytearray(b'\xaa'*32),
bytearray(b'\xbb'*32))
self.assertEqual(vrfy, bytearray(
b'r_\x06\xd2(\\}v\x87\xfc\xf5\xa2h\xd6S\xd8'
b'\xed=\x9b\xe3\xd9_%qe\xa3k\xf5\x85\x0e?\x9fr\xfaML'
))
class TestCalcVerifyBytes(unittest.TestCase):
def setUp(self):
self.handshake_hashes = HandshakeHashes()
self.handshake_hashes.update(bytearray(b'\xab'*32))
def test_with_TLS1_2(self):
vrfy = KeyExchange.calcVerifyBytes((3, 3),
self.handshake_hashes,
(HashAlgorithm.sha1,
SignatureAlgorithm.rsa),
None,
None,
None)
self.assertEqual(vrfy, bytearray(
# PKCS#1 prefix
b'0!0\t\x06\x05+\x0e\x03\x02\x1a\x05\x00\x04\x14'
# SHA1 hash
b'L3\x81\xad\x1b\xc2\x14\xc0\x8e\xba\xe4\xb8\xa2\x9d(6V1\xfb\xb0'))
def test_with_TLS1_1(self):
vrfy = KeyExchange.calcVerifyBytes((3, 2),
self.handshake_hashes,
None, None, None, None)
self.assertEqual(vrfy, bytearray(
# MD5 hash
b'\xe9\x9f\xb4\xd24\xe9\xf41S\xe6?\xa5\xfe\xad\x16\x14'
# SHA1 hash
b'L3\x81\xad\x1b\xc2\x14\xc0\x8e\xba\xe4\xb8\xa2\x9d(6V1\xfb\xb0'
))
def test_with_SSL3(self):
vrfy = KeyExchange.calcVerifyBytes((3, 0),
self.handshake_hashes,
None,
bytearray(b'\x04'*48),
bytearray(b'\xaa'*32),
bytearray(b'\xbb'*32))
self.assertEqual(vrfy, bytearray(
b'r_\x06\xd2(\\}v\x87\xfc\xf5\xa2h\xd6S\xd8'
b'\xed=\x9b\xe3\xd9_%qe\xa3k\xf5\x85\x0e?\x9fr\xfaML'
))
def test_copy(self):
hh = HandshakeHashes()
hh.update(b'text')
hh2 = hh.copy()
self.assertEqual(hh2.digest(), hh.digest())
class TestCalcExtendedMasterSecret(unittest.TestCase):
def setUp(self):
self.handshakeHashes = HandshakeHashes()
self.handshakeHashes.update(bytearray(48))
def test_with_TLS_1_0(self):
ret = calcExtendedMasterSecret((3, 1),
0,
bytearray(48),
self.handshakeHashes)
self.assertEqual(ret, bytearray(
b'/\xe9\x86\xda\xda\xa9)\x1eyJ\xc9\x13E\xe4\xfc\xe7\x842m7(\xb4'
b'\x98\xb7\xbc\xa5\xda\x1d\xf3\x15\xea\xdf:i\xeb\x9bA\x8f\xe7'
b'\xd4<\xe0\xe8\x1d\xa0\xf0\x10\x83'
))
def test_with_TLS_1_2(self):
ret = calcExtendedMasterSecret((3, 3),
0,
bytearray(48),
self.handshakeHashes)
self.assertEqual(ret, bytearray(
b'\x03\xc93Yx\xcbjSEmz*\x0b\xc3\xc04G\xf3\xe3{\xee\x13\x8b\xac'
b'\xd7\xb7\xe6\xbaY\x86\xd5\xf2o?\x8f\xc6\xf2\x19\x1d\x06\xe0N'
b'\xb5\xcaJX\xe8\x1d'
))
def test_with_TLS_1_2_and_SHA384_PRF(self):
ret = calcExtendedMasterSecret((3, 3),
CipherSuite.
TLS_RSA_WITH_AES_256_GCM_SHA384,
bytearray(48),
self.handshakeHashes)
self.assertEqual(ret, bytearray(
b"\xd6\xed}K\xfbo\xb2\xdb\xa4\xee\xa1\x0f\x8f\x07*\x84w/\xbf_"
b"\xbd\xc1U^\x93\xcf\xe8\xca\x82\xb7_B\xa3O\xd9V\x86\x12\xfd\x08"
b"$\x92\'L\xae\xc0@\x01"
))
def _setup_tls13_handshake_keys(self, state):
"""Prepare handshake ciphers for the HRR handling"""
prf_name = state.prf_name
ch_hash = self._ch_hh.digest(prf_name)
new_hh = HandshakeHashes()
writer = Writer()
writer.add(HandshakeType.message_hash, 1)
writer.addVarSeq(ch_hash, 1, 3)
new_hh.update(writer.bytes)
new_hh.update(self._msg.write())
state.handshake_hashes = new_hh
def test_digest_md5(self):
hh = HandshakeHashes()
self.assertEqual(
b"\xd4\x1d\x8c\xd9\x8f\x00\xb2\x04\xe9\x80\t\x98\xec\xf8B~",
hh.digest('md5'))
class TestCalcFinished(unittest.TestCase):
def setUp(self):
self.hhashes = HandshakeHashes()
self.hhashes.update(bytearray(10))
def setUp(self):
self.hhashes = HandshakeHashes()
self.hhashes.update(bytearray(10))
def test___init__(self):
hh = HandshakeHashes()
self.assertIsNotNone(hh)
def test_update_with_str(self):
hh = HandshakeHashes()
hh.update(b'text')
def test_update(self):
hh = HandshakeHashes()
hh.update(bytearray(10))
def setUp(self):
self.handshake_hashes = HandshakeHashes()
self.handshake_hashes.update(bytearray(b'\xab'*32))
def test_digest_sha1(self):
hh = HandshakeHashes()
self.assertEqual(
b"\xda9\xa3\xee^kK\r2U\xbf\xef\x95`\x18\x90\xaf\xd8\x07\t",
hh.digest('sha1'))
class TestMakeCertificateVerify(unittest.TestCase):
def setUp(self):
cert_chain = X509CertChain([X509().parse(srv_raw_certificate)])
self.clnt_pub_key = cert_chain.getEndEntityPublicKey()
self.cipher_suite = CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA
self.clnt_private_key = parsePEMKey(srv_raw_key, private=True)
self.handshake_hashes = HandshakeHashes()
self.handshake_hashes.update(bytearray(b'\xab'*32))
def test_with_TLS1_2(self):
certificate_request = CertificateRequest((3, 3))
certificate_request.create([CertificateType.x509],
[],
[(HashAlgorithm.sha256,
SignatureAlgorithm.rsa),
(HashAlgorithm.sha1,
SignatureAlgorithm.rsa)])
certVerify = KeyExchange.makeCertificateVerify((3, 3),
self.handshake_hashes,
[(HashAlgorithm.sha1,
SignatureAlgorithm.rsa),
(HashAlgorithm.sha512,
SignatureAlgorithm.rsa)],
self.clnt_private_key,
certificate_request,
None, None, None)
self.assertIsNotNone(certVerify)
self.assertEqual(certVerify.version, (3, 3))
self.assertEqual(certVerify.signatureAlgorithm, (HashAlgorithm.sha1,
SignatureAlgorithm.rsa))
self.assertEqual(certVerify.signature, bytearray(
b'.\x03\xa2\xf0\xa0\xfb\xbeUs\xdb\x9b\xea\xcc(\xa6:l\x84\x8e\x13'
b'\xa1\xaa\xdb1P\xe9\x06\x876\xbe+\xe92\x89\xaa\xa5EU\x07\x9a\xde'
b'\xd37\xafGCR\xdam\xa2v\xde\xceeFI\x80:ZtL\x96\xafZ\xe2\xe2\xce/'
b'\x9f\x82\xfe\xdb*\x94\xa8\xbd\xd9Hl\xdc\xc8\xbf\x9b=o\xda\x06'
b'\xfa\x9e\xbfB+05\xc6\xda\xdf\x05\xf2m[\x18\x11\xaf\x184\x12\x9d'
b'\xb4:\x9b\xc1U\x1c\xba\xa3\x05\xceOn\x0fY\xcaK*\x0b\x04\xa5'
))
def test_with_TLS1_2_and_no_overlap(self):
certificate_request = CertificateRequest((3, 3))
certificate_request.create([CertificateType.x509],
[],
[(HashAlgorithm.sha256,
SignatureAlgorithm.rsa),
(HashAlgorithm.sha224,
SignatureAlgorithm.rsa)])
certVerify = KeyExchange.makeCertificateVerify((3, 3),
self.handshake_hashes,
[(HashAlgorithm.sha1,
SignatureAlgorithm.rsa),
(HashAlgorithm.sha512,
SignatureAlgorithm.rsa)],
self.clnt_private_key,
certificate_request,
None, None, None)
self.assertIsNotNone(certVerify)
self.assertEqual(certVerify.version, (3, 3))
# when there's no overlap, we select the most wanted from our side
self.assertEqual(certVerify.signatureAlgorithm, (HashAlgorithm.sha1,
SignatureAlgorithm.rsa))
self.assertEqual(certVerify.signature, bytearray(
b'.\x03\xa2\xf0\xa0\xfb\xbeUs\xdb\x9b\xea\xcc(\xa6:l\x84\x8e\x13'
b'\xa1\xaa\xdb1P\xe9\x06\x876\xbe+\xe92\x89\xaa\xa5EU\x07\x9a\xde'
b'\xd37\xafGCR\xdam\xa2v\xde\xceeFI\x80:ZtL\x96\xafZ\xe2\xe2\xce/'
b'\x9f\x82\xfe\xdb*\x94\xa8\xbd\xd9Hl\xdc\xc8\xbf\x9b=o\xda\x06'
b'\xfa\x9e\xbfB+05\xc6\xda\xdf\x05\xf2m[\x18\x11\xaf\x184\x12\x9d'
b'\xb4:\x9b\xc1U\x1c\xba\xa3\x05\xceOn\x0fY\xcaK*\x0b\x04\xa5'
))
def test_with_TLS1_1(self):
certificate_request = CertificateRequest((3, 2))
certificate_request.create([CertificateType.x509],
[],
None)
certVerify = KeyExchange.makeCertificateVerify((3, 2),
self.handshake_hashes,
None,
self.clnt_private_key,
certificate_request,
None, None, None)
self.assertIsNotNone(certVerify)
self.assertEqual(certVerify.version, (3, 2))
self.assertIsNone(certVerify.signatureAlgorithm)
self.assertEqual(certVerify.signature, bytearray(
b'=X\x14\xf3\r6\x0b\x84\xde&J\x15\xa02M\xc8\xf1?\xa0\x10U\x1e\x0b'
b'\x95^\xa19\x14\xf5\xf1$\xe3U[\xb4/\xe7AY(\xee]\xff\x97H\xb8\xa9'
b'\x8b\x96n\xa6\xf5\x0f\xffd\r\x08/Hs6`wi8\xc4\x02\xa4}a\xcbS\x99'
b'\x01;\x0e\x88oj\x9a\x02\x98Y\xb5\x00$f@>\xd8\x0cS\x95\xa8\x9e'
b'\x14uU\\Z\xd0.\xe7\x01_y\x1d\xea\xad\x1b\xf8c\xa6\xc9@\xc6\x90'
b'\x19~&\xd9\xaa\xc2\t,s\xde\xb1'
))
def test_digest_sha1(self):
hh = HandshakeHashes()
self.assertEqual(
b"\xda9\xa3\xee^kK\r2U\xbf\xef\x95`\x18\x90\xaf\xd8\x07\t",
hh.digest('sha1'))
def setUp(self):
self.handshake_hashes = HandshakeHashes()
self.handshake_hashes.update(bytearray(b'\xab'*32))
class TestCalcFinished(unittest.TestCase):
def setUp(self):
self.hhashes = HandshakeHashes()
self.hhashes.update(bytearray(10))
printTestVectorBytes("SERVER_CHANGE_CIPHER_SPEC", s_sent[0][-6:])
printTestVectorBytes("SERVER_ENCRYPTED_EXTENSIONS_AND_FINISHED", s_sent[1])
printTestVectorBytes("SERVER_APP_DATA", s_sent[2])
printTestVectorBytes("SERVER_APP_DATA_2", s_sent[3])
printTestVectorBytes("SERVER_CLOSE", s_sent[4])
assert len(s_sent) == 5
print("\n")
# For some additional tests of key generation, we use tlslite-ng's low-level
# derivation functions to run the TLS1.3 keyschedule. It doesn't seem to expose
# a nice API that encapsulates these calculations directly.
printComment("Testcases for key derivation")
prf = "sha256"
transcript = HandshakeHashes()
earlySecret = secureHMAC(bytearray(32), PSK, prf)
printTestVectorBytes(
"KEYS_EXT_BINDER",
derive_secret(earlySecret, b"ext binder", None, prf)
)
handshakeSecret = secureHMAC(
derive_secret(earlySecret, b"derived", None, prf),
bytearray(32), # No ECDHE, so use zeros.
prf
)
printTestVectorStr("KEYS_PLAINTEXT_TRANSCRIPT", b'fake plaintext transcript')
transcript.update(b'fake plaintext transcript')
printTestVectorBytes(
"KEYS_CLIENT_HANDSHAKE_TRAFFIC_SECRET",
def test_digest_with_invalid_hash(self):
hh = HandshakeHashes()
with self.assertRaises(ValueError):
hh.digest('md2')
def test(self):
sock = MockSocket(server_hello_ciphertext)
record_layer = RecordLayer(sock)
ext = [SNIExtension().create(bytearray(b'server')),
TLSExtension(extType=ExtensionType.renegotiation_info)
.create(bytearray(b'\x00')),
SupportedGroupsExtension().create([GroupName.x25519,
GroupName.secp256r1,
GroupName.secp384r1,
GroupName.secp521r1,
GroupName.ffdhe2048,
GroupName.ffdhe3072,
GroupName.ffdhe4096,
GroupName.ffdhe6144,
GroupName.ffdhe8192]),
ECPointFormatsExtension().create([ECPointFormat.uncompressed]),
TLSExtension(extType=35),
ClientKeyShareExtension().create([KeyShareEntry().create(GroupName.x25519,
client_key_public,
client_key_private)]),
SupportedVersionsExtension().create([TLS_1_3_DRAFT,
(3, 3), (3, 2)]),
SignatureAlgorithmsExtension().create([(HashAlgorithm.sha256,
SignatureAlgorithm.ecdsa),
(HashAlgorithm.sha384,
SignatureAlgorithm.ecdsa),
(HashAlgorithm.sha512,
SignatureAlgorithm.ecdsa),
(HashAlgorithm.sha1,
SignatureAlgorithm.ecdsa),
SignatureScheme.rsa_pss_sha256,
SignatureScheme.rsa_pss_sha384,
SignatureScheme.rsa_pss_sha512,
SignatureScheme.rsa_pkcs1_sha256,
SignatureScheme.rsa_pkcs1_sha384,
SignatureScheme.rsa_pkcs1_sha512,
SignatureScheme.rsa_pkcs1_sha1,
(HashAlgorithm.sha256,
SignatureAlgorithm.dsa),
(HashAlgorithm.sha384,
SignatureAlgorithm.dsa),
(HashAlgorithm.sha512,
SignatureAlgorithm.dsa),
(HashAlgorithm.sha1,
SignatureAlgorithm.dsa)]),
TLSExtension(extType=45).create(bytearray(b'\x01\x01')),
TLSExtension(extType=ExtensionType.client_hello_padding)
.create(bytearray(252))
]
client_hello = ClientHello()
client_hello.create((3, 3),
bytearray(b'\xaf!\x15k\x04\xdbc\x9ef\x15J\x1f\xe5'
b'\xad\xfa\xea\xdf\x9eA4\x16\x00\rW\xb8'
b'\xe1\x12mM\x11\x9a\x8b'),
bytearray(b''),
[CipherSuite.TLS_AES_128_GCM_SHA256,
CipherSuite.TLS_CHACHA20_POLY1305_SHA256,
CipherSuite.TLS_AES_256_GCM_SHA384,
CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
0xCCA9,
CipherSuite.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
CipherSuite.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,
CipherSuite.TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
0x0032,
CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,
CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA,
0x0038,
CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,
CipherSuite.TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA,
0x0013,
CipherSuite.TLS_RSA_WITH_AES_128_GCM_SHA256,
CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA,
CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA256,
CipherSuite.TLS_RSA_WITH_AES_256_CBC_SHA,
CipherSuite.TLS_RSA_WITH_AES_256_CBC_SHA256,
CipherSuite.TLS_RSA_WITH_3DES_EDE_CBC_SHA,
CipherSuite.TLS_RSA_WITH_RC4_128_SHA,
CipherSuite.TLS_RSA_WITH_RC4_128_MD5],
extensions=ext)
self.assertEqual(client_hello.write(), client_hello_ciphertext[5:])
for result in record_layer.recvRecord():
# check if non-blocking
self.assertNotIn(result, (0, 1))
header, parser = result
hs_type = parser.get(1)
self.assertEqual(hs_type, HandshakeType.server_hello)
server_hello = ServerHello().parse(parser)
self.assertEqual(server_hello.server_version, TLS_1_3_DRAFT)
self.assertEqual(server_hello.cipher_suite, CipherSuite.TLS_AES_128_GCM_SHA256)
server_key_share = server_hello.getExtension(ExtensionType.key_share)
server_key_share = server_key_share.server_share
self.assertEqual(server_key_share.group, GroupName.x25519)
# for TLS_AES_128_GCM_SHA256:
prf_name = 'sha256'
prf_size = 256 // 8
secret = bytearray(prf_size)
psk = bytearray(prf_size)
# early secret
secret = secureHMAC(secret, psk, prf_name)
self.assertEqual(secret,
str_to_bytearray(
"33ad0a1c607ec03b 09e6cd9893680ce2"
"10adf300aa1f2660 e1b22e10f170f92a"))
# derive secret for handshake
secret = derive_secret(secret, b"derived", None, prf_name)
self.assertEqual(secret,
str_to_bytearray(
"6f2615a108c702c5 678f54fc9dbab697"
"16c076189c48250c ebeac3576c3611ba"))
# extract secret "handshake"
Z = x25519(client_key_private, server_key_share.key_exchange)
self.assertEqual(Z,
str_to_bytearray(
"f677c3cdac26a755 455b130efa9b1a3f"
"3cafb153544ca46a ddf670df199d996e"))
secret = secureHMAC(secret, Z, prf_name)
self.assertEqual(secret,
str_to_bytearray(
"0cefce00d5d29fd0 9f5de36c86fc8e72"
"99b4ad11ba4211c6 7063c2cc539fc4f9"))
handshake_hashes = HandshakeHashes()
handshake_hashes.update(client_hello_plaintext)
handshake_hashes.update(server_hello_payload)
# derive "tls13 c hs traffic"
c_hs_traffic = derive_secret(secret,
bytearray(b'c hs traffic'),
handshake_hashes,
prf_name)
self.assertEqual(c_hs_traffic,
str_to_bytearray(
"5a63db760b817b1b da96e72832333aec"
"6a177deeadb5b407 501ac10c17dac0a4"))
s_hs_traffic = derive_secret(secret,
bytearray(b's hs traffic'),
handshake_hashes,
prf_name)
self.assertEqual(s_hs_traffic,
str_to_bytearray(
"3aa72a3c77b791e8 f4de243f9ccce172"
"941f8392aeb05429 320f4b572ccfe744"))
# derive master secret
secret = derive_secret(secret, b"derived", None, prf_name)
self.assertEqual(secret,
str_to_bytearray(
"32cadf38f3089048 5c54bf4f1184eaa5"
"569eeef15a43f3c7 6ab33965a47c9ff6"))
# extract secret "master
secret = secureHMAC(secret, bytearray(prf_size), prf_name)
self.assertEqual(secret,
str_to_bytearray(
"6c6d4b3e7c925460 82d7b7a32f6ce219"
"3804f1bb930fed74 5c6b93c71397f424"))
class TestMakeCertificateVerify(unittest.TestCase):
def setUp(self):
cert_chain = X509CertChain([X509().parse(srv_raw_certificate)])
self.clnt_pub_key = cert_chain.getEndEntityPublicKey()
self.cipher_suite = CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA
self.clnt_private_key = parsePEMKey(srv_raw_key, private=True)
self.handshake_hashes = HandshakeHashes()
self.handshake_hashes.update(bytearray(b'\xab'*32))
def test_with_TLS1_2(self):
certificate_request = CertificateRequest((3, 3))
certificate_request.create([CertificateType.x509],
[],
[(HashAlgorithm.sha256,
SignatureAlgorithm.rsa),
(HashAlgorithm.sha1,
SignatureAlgorithm.rsa)])
certVerify = KeyExchange.makeCertificateVerify((3, 3),
self.handshake_hashes,
[(HashAlgorithm.sha1,
SignatureAlgorithm.rsa),
(HashAlgorithm.sha512,
SignatureAlgorithm.rsa)],
self.clnt_private_key,
certificate_request,
None, None, None)
self.assertIsNotNone(certVerify)
self.assertEqual(certVerify.version, (3, 3))
self.assertEqual(certVerify.signatureAlgorithm, (HashAlgorithm.sha1,
SignatureAlgorithm.rsa))
self.assertEqual(certVerify.signature, bytearray(
b'.\x03\xa2\xf0\xa0\xfb\xbeUs\xdb\x9b\xea\xcc(\xa6:l\x84\x8e\x13'
b'\xa1\xaa\xdb1P\xe9\x06\x876\xbe+\xe92\x89\xaa\xa5EU\x07\x9a\xde'
b'\xd37\xafGCR\xdam\xa2v\xde\xceeFI\x80:ZtL\x96\xafZ\xe2\xe2\xce/'
b'\x9f\x82\xfe\xdb*\x94\xa8\xbd\xd9Hl\xdc\xc8\xbf\x9b=o\xda\x06'
b'\xfa\x9e\xbfB+05\xc6\xda\xdf\x05\xf2m[\x18\x11\xaf\x184\x12\x9d'
b'\xb4:\x9b\xc1U\x1c\xba\xa3\x05\xceOn\x0fY\xcaK*\x0b\x04\xa5'
))
def test_with_TLS1_2_and_no_overlap(self):
certificate_request = CertificateRequest((3, 3))
certificate_request.create([CertificateType.x509],
[],
[(HashAlgorithm.sha256,
SignatureAlgorithm.rsa),
(HashAlgorithm.sha224,
SignatureAlgorithm.rsa)])
certVerify = KeyExchange.makeCertificateVerify((3, 3),
self.handshake_hashes,
[(HashAlgorithm.sha1,
SignatureAlgorithm.rsa),
(HashAlgorithm.sha512,
SignatureAlgorithm.rsa)],
self.clnt_private_key,
certificate_request,
None, None, None)
self.assertIsNotNone(certVerify)
self.assertEqual(certVerify.version, (3, 3))
# when there's no overlap, we select the most wanted from our side
self.assertEqual(certVerify.signatureAlgorithm, (HashAlgorithm.sha1,
SignatureAlgorithm.rsa))
self.assertEqual(certVerify.signature, bytearray(
b'.\x03\xa2\xf0\xa0\xfb\xbeUs\xdb\x9b\xea\xcc(\xa6:l\x84\x8e\x13'
b'\xa1\xaa\xdb1P\xe9\x06\x876\xbe+\xe92\x89\xaa\xa5EU\x07\x9a\xde'
b'\xd37\xafGCR\xdam\xa2v\xde\xceeFI\x80:ZtL\x96\xafZ\xe2\xe2\xce/'
b'\x9f\x82\xfe\xdb*\x94\xa8\xbd\xd9Hl\xdc\xc8\xbf\x9b=o\xda\x06'
b'\xfa\x9e\xbfB+05\xc6\xda\xdf\x05\xf2m[\x18\x11\xaf\x184\x12\x9d'
b'\xb4:\x9b\xc1U\x1c\xba\xa3\x05\xceOn\x0fY\xcaK*\x0b\x04\xa5'
))
def test_with_TLS1_1(self):
certificate_request = CertificateRequest((3, 2))
certificate_request.create([CertificateType.x509],
[],
None)
certVerify = KeyExchange.makeCertificateVerify((3, 2),
self.handshake_hashes,
None,
self.clnt_private_key,
certificate_request,
None, None, None)
self.assertIsNotNone(certVerify)
self.assertEqual(certVerify.version, (3, 2))
self.assertIsNone(certVerify.signatureAlgorithm)
self.assertEqual(certVerify.signature, bytearray(
b'=X\x14\xf3\r6\x0b\x84\xde&J\x15\xa02M\xc8\xf1?\xa0\x10U\x1e\x0b'
b'\x95^\xa19\x14\xf5\xf1$\xe3U[\xb4/\xe7AY(\xee]\xff\x97H\xb8\xa9'
b'\x8b\x96n\xa6\xf5\x0f\xffd\r\x08/Hs6`wi8\xc4\x02\xa4}a\xcbS\x99'
b'\x01;\x0e\x88oj\x9a\x02\x98Y\xb5\x00$f@>\xd8\x0cS\x95\xa8\x9e'
b'\x14uU\\Z\xd0.\xe7\x01_y\x1d\xea\xad\x1b\xf8c\xa6\xc9@\xc6\x90'
b'\x19~&\xd9\xaa\xc2\t,s\xde\xb1'
))
def process(self, state):
"""Reset current running handshake protocol hashes"""
state.handshake_hashes = HandshakeHashes()
def test_update(self):
hh = HandshakeHashes()
hh.update(bytearray(10))
def test_digest_md5(self):
hh = HandshakeHashes()
self.assertEqual(
b"\xd4\x1d\x8c\xd9\x8f\x00\xb2\x04\xe9\x80\t\x98\xec\xf8B~",
hh.digest('md5'))
def test(self):
sock = MockSocket(server_hello_ciphertext)
record_layer = RecordLayer(sock)
ext = [SNIExtension().create(bytearray(b'server')),
TLSExtension(extType=ExtensionType.renegotiation_info)
.create(bytearray(b'\x00')),
SupportedGroupsExtension().create([GroupName.x25519,
GroupName.secp256r1,
GroupName.secp384r1,
GroupName.secp521r1,
GroupName.ffdhe2048,
GroupName.ffdhe3072,
GroupName.ffdhe4096,
GroupName.ffdhe6144,
GroupName.ffdhe8192]),
ECPointFormatsExtension().create([ECPointFormat.uncompressed]),
TLSExtension(extType=35),
ClientKeyShareExtension().create([KeyShareEntry().create(GroupName.x25519,
client_key_public,
client_key_private)]),
SupportedVersionsExtension().create([TLS_1_3_DRAFT,
(3, 3), (3, 2)]),
SignatureAlgorithmsExtension().create([(HashAlgorithm.sha256,
SignatureAlgorithm.ecdsa),
(HashAlgorithm.sha384,
SignatureAlgorithm.ecdsa),
(HashAlgorithm.sha512,
SignatureAlgorithm.ecdsa),
(HashAlgorithm.sha1,
SignatureAlgorithm.ecdsa),
SignatureScheme.rsa_pss_sha256,
SignatureScheme.rsa_pss_sha384,
SignatureScheme.rsa_pss_sha512,
SignatureScheme.rsa_pkcs1_sha256,
SignatureScheme.rsa_pkcs1_sha384,
SignatureScheme.rsa_pkcs1_sha512,
SignatureScheme.rsa_pkcs1_sha1,
(HashAlgorithm.sha256,
SignatureAlgorithm.dsa),
(HashAlgorithm.sha384,
SignatureAlgorithm.dsa),
(HashAlgorithm.sha512,
SignatureAlgorithm.dsa),
(HashAlgorithm.sha1,
SignatureAlgorithm.dsa)]),
TLSExtension(extType=45).create(bytearray(b'\x01\x01')),
TLSExtension(extType=ExtensionType.client_hello_padding)
.create(bytearray(252))
]
client_hello = ClientHello()
client_hello.create((3, 3),
bytearray(b'\xaf!\x15k\x04\xdbc\x9ef\x15J\x1f\xe5'
b'\xad\xfa\xea\xdf\x9eA4\x16\x00\rW\xb8'
b'\xe1\x12mM\x11\x9a\x8b'),
bytearray(b''),
[CipherSuite.TLS_AES_128_GCM_SHA256,
CipherSuite.TLS_CHACHA20_POLY1305_SHA256,
CipherSuite.TLS_AES_256_GCM_SHA384,
CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
0xCCA9,
CipherSuite.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
CipherSuite.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
CipherSuite.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
CipherSuite.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,
CipherSuite.TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA,
0x0032,
CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,
CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA,
0x0038,
CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,
CipherSuite.TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA,
0x0013,
CipherSuite.TLS_RSA_WITH_AES_128_GCM_SHA256,
CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA,
CipherSuite.TLS_RSA_WITH_AES_128_CBC_SHA256,
CipherSuite.TLS_RSA_WITH_AES_256_CBC_SHA,
CipherSuite.TLS_RSA_WITH_AES_256_CBC_SHA256,
CipherSuite.TLS_RSA_WITH_3DES_EDE_CBC_SHA,
CipherSuite.TLS_RSA_WITH_RC4_128_SHA,
CipherSuite.TLS_RSA_WITH_RC4_128_MD5],
extensions=ext)
self.assertEqual(client_hello.write(), client_hello_ciphertext[5:])
for result in record_layer.recvRecord():
# check if non-blocking
self.assertNotIn(result, (0, 1))
header, parser = result
hs_type = parser.get(1)
self.assertEqual(hs_type, HandshakeType.server_hello)
server_hello = ServerHello().parse(parser)
self.assertEqual(server_hello.server_version, TLS_1_3_DRAFT)
self.assertEqual(server_hello.cipher_suite, CipherSuite.TLS_AES_128_GCM_SHA256)
server_key_share = server_hello.getExtension(ExtensionType.key_share)
server_key_share = server_key_share.server_share
self.assertEqual(server_key_share.group, GroupName.x25519)
# for TLS_AES_128_GCM_SHA256:
prf_name = 'sha256'
prf_size = 256 // 8
secret = bytearray(prf_size)
psk = bytearray(prf_size)
# early secret
secret = secureHMAC(secret, psk, prf_name)
self.assertEqual(secret,
str_to_bytearray(
"33ad0a1c607ec03b 09e6cd9893680ce2"
"10adf300aa1f2660 e1b22e10f170f92a"))
# derive secret for handshake
secret = derive_secret(secret, b"derived", None, prf_name)
self.assertEqual(secret,
str_to_bytearray(
"6f2615a108c702c5 678f54fc9dbab697"
"16c076189c48250c ebeac3576c3611ba"))
# extract secret "handshake"
Z = x25519(client_key_private, server_key_share.key_exchange)
self.assertEqual(Z,
str_to_bytearray(
"f677c3cdac26a755 455b130efa9b1a3f"
"3cafb153544ca46a ddf670df199d996e"))
secret = secureHMAC(secret, Z, prf_name)
self.assertEqual(secret,
str_to_bytearray(
"0cefce00d5d29fd0 9f5de36c86fc8e72"
"99b4ad11ba4211c6 7063c2cc539fc4f9"))
handshake_hashes = HandshakeHashes()
handshake_hashes.update(client_hello_plaintext)
handshake_hashes.update(server_hello_payload)
# derive "tls13 c hs traffic"
c_hs_traffic = derive_secret(secret,
bytearray(b'c hs traffic'),
handshake_hashes,
prf_name)
self.assertEqual(c_hs_traffic,
str_to_bytearray(
"5a63db760b817b1b da96e72832333aec"
"6a177deeadb5b407 501ac10c17dac0a4"))
s_hs_traffic = derive_secret(secret,
bytearray(b's hs traffic'),
handshake_hashes,
prf_name)
self.assertEqual(s_hs_traffic,
str_to_bytearray(
"3aa72a3c77b791e8 f4de243f9ccce172"
"941f8392aeb05429 320f4b572ccfe744"))
# derive master secret
secret = derive_secret(secret, b"derived", None, prf_name)
self.assertEqual(secret,
str_to_bytearray(
"32cadf38f3089048 5c54bf4f1184eaa5"
"569eeef15a43f3c7 6ab33965a47c9ff6"))
# extract secret "master
secret = secureHMAC(secret, bytearray(prf_size), prf_name)
self.assertEqual(secret,
str_to_bytearray(
"6c6d4b3e7c925460 82d7b7a32f6ce219"
"3804f1bb930fed74 5c6b93c71397f424"))
def test(self):
sock = MockSocket(server_hello_ciphertext)
record_layer = RecordLayer(sock)
ext = [
SNIExtension().create(bytearray(b'server')),
TLSExtension(extType=ExtensionType.renegotiation_info).create(
bytearray(b'\x00')),
SupportedGroupsExtension().create([
GroupName.x25519, GroupName.secp256r1, GroupName.secp384r1,
GroupName.secp521r1, GroupName.ffdhe2048, GroupName.ffdhe3072,
GroupName.ffdhe4096, GroupName.ffdhe6144, GroupName.ffdhe8192
]),
TLSExtension(extType=35),
ClientKeyShareExtension().create([
KeyShareEntry().create(GroupName.x25519, client_key_public,
client_key_private)
]),
SupportedVersionsExtension().create([(3, 4)]),
SignatureAlgorithmsExtension().create([
SignatureScheme.ecdsa_secp256r1_sha256,
SignatureScheme.ecdsa_secp384r1_sha384,
SignatureScheme.ecdsa_secp521r1_sha512,
(HashAlgorithm.sha1, SignatureAlgorithm.ecdsa),
SignatureScheme.rsa_pss_rsae_sha256,
SignatureScheme.rsa_pss_rsae_sha384,
SignatureScheme.rsa_pss_rsae_sha512,
SignatureScheme.rsa_pkcs1_sha256,
SignatureScheme.rsa_pkcs1_sha384,
SignatureScheme.rsa_pkcs1_sha512,
SignatureScheme.rsa_pkcs1_sha1,
(HashAlgorithm.sha256, SignatureAlgorithm.dsa),
(HashAlgorithm.sha384, SignatureAlgorithm.dsa),
(HashAlgorithm.sha512, SignatureAlgorithm.dsa),
(HashAlgorithm.sha1, SignatureAlgorithm.dsa)
]),
TLSExtension(extType=45).create(bytearray(b'\x01\x01')),
RecordSizeLimitExtension().create(16385)
]
client_hello = ClientHello()
client_hello.create((3, 3),
bytearray(b'\xcb4\xec\xb1\xe7\x81c'
b'\xba\x1c8\xc6\xda\xcb'
b'\x19jm\xff\xa2\x1a\x8d'
b'\x99\x12\xec\x18\xa2'
b'\xefb\x83\x02M\xec\xe7'),
bytearray(b''), [
CipherSuite.TLS_AES_128_GCM_SHA256,
CipherSuite.TLS_CHACHA20_POLY1305_SHA256,
CipherSuite.TLS_AES_256_GCM_SHA384
],
extensions=ext)
self.assertEqual(client_hello.write(), client_hello_ciphertext[5:])
for result in record_layer.recvRecord():
# check if non-blocking
self.assertNotIn(result, (0, 1))
break
header, parser = result
hs_type = parser.get(1)
self.assertEqual(hs_type, HandshakeType.server_hello)
server_hello = ServerHello().parse(parser)
self.assertEqual(server_hello.server_version, (3, 3))
self.assertEqual(server_hello.cipher_suite,
CipherSuite.TLS_AES_128_GCM_SHA256)
server_key_share = server_hello.getExtension(ExtensionType.key_share)
server_key_share = server_key_share.server_share
self.assertEqual(server_key_share.group, GroupName.x25519)
# for TLS_AES_128_GCM_SHA256:
prf_name = 'sha256'
prf_size = 256 // 8
secret = bytearray(prf_size)
psk = bytearray(prf_size)
# early secret
secret = secureHMAC(secret, psk, prf_name)
self.assertEqual(
secret,
clean("""
33 ad 0a 1c 60 7e c0 3b 09 e6 cd 98 93 68 0c
e2 10 ad f3 00 aa 1f 26 60 e1 b2 2e 10 f1 70 f9 2a
"""))
# derive secret for handshake
secret = derive_secret(secret, b"derived", None, prf_name)
self.assertEqual(
secret,
clean("""
6f 26 15 a1 08 c7 02 c5 67 8f 54 fc 9d ba
b6 97 16 c0 76 18 9c 48 25 0c eb ea c3 57 6c 36 11 ba
"""))
# extract secret "handshake"
Z = x25519(client_key_private, server_key_share.key_exchange)
self.assertEqual(
Z,
clean("""
8b d4 05 4f b5 5b 9d 63 fd fb ac f9 f0 4b 9f 0d
35 e6 d6 3f 53 75 63 ef d4 62 72 90 0f 89 49 2d
"""))
secret = secureHMAC(secret, Z, prf_name)
self.assertEqual(
secret,
clean("""
1d c8 26 e9 36 06 aa 6f dc 0a ad c1 2f 74 1b
01 04 6a a6 b9 9f 69 1e d2 21 a9 f0 ca 04 3f be ac
"""))
handshake_hashes = HandshakeHashes()
handshake_hashes.update(client_hello_plaintext)
handshake_hashes.update(server_hello_payload)
# derive "tls13 c hs traffic"
c_hs_traffic = derive_secret(secret, bytearray(b'c hs traffic'),
handshake_hashes, prf_name)
self.assertEqual(
c_hs_traffic,
clean("""
b3 ed db 12 6e 06 7f 35 a7 80 b3 ab f4 5e
2d 8f 3b 1a 95 07 38 f5 2e 96 00 74 6a 0e 27 a5 5a 21
"""))
s_hs_traffic = derive_secret(secret, bytearray(b's hs traffic'),
handshake_hashes, prf_name)
self.assertEqual(
s_hs_traffic,
clean("""
b6 7b 7d 69 0c c1 6c 4e 75 e5 42 13 cb 2d
37 b4 e9 c9 12 bc de d9 10 5d 42 be fd 59 d3 91 ad 38
"""))
# derive master secret
secret = derive_secret(secret, b"derived", None, prf_name)
self.assertEqual(
secret,
clean("""
43 de 77 e0 c7 77 13 85 9a 94 4d b9 db 25
90 b5 31 90 a6 5b 3e e2 e4 f1 2d d7 a0 bb 7c e2 54 b4
"""))
# extract secret "master"
secret = secureHMAC(secret, bytearray(prf_size), prf_name)
self.assertEqual(
secret,
clean("""
18 df 06 84 3d 13 a0 8b f2 a4 49 84 4c 5f 8a
47 80 01 bc 4d 4c 62 79 84 d5 a4 1d a8 d0 40 29 19
"""))
# derive write keys for handshake data
server_hs_write_trafic_key = HKDF_expand_label(s_hs_traffic, b"key",
b"", 16, prf_name)
self.assertEqual(
server_hs_write_trafic_key,
clean("""
3f ce 51 60 09 c2 17 27 d0 f2 e4 e8 6e
e4 03 bc
"""))
server_hs_write_trafic_iv = HKDF_expand_label(s_hs_traffic, b"iv", b"",
12, prf_name)
self.assertEqual(
server_hs_write_trafic_iv,
clean("""
5d 31 3e b2 67 12 76 ee 13 00 0b 30
"""))
# derive key for Finished message
server_finished_key = HKDF_expand_label(s_hs_traffic, b"finished", b"",
prf_size, prf_name)
self.assertEqual(
server_finished_key,
clean("""
00 8d 3b 66 f8 16 ea 55 9f 96 b5 37 e8 85
c3 1f c0 68 bf 49 2c 65 2f 01 f2 88 a1 d8 cd c1 9f c8
"""))
# Update the handshake transcript
handshake_hashes.update(server_encrypted_extensions)
handshake_hashes.update(server_certificate_message)
handshake_hashes.update(server_certificateverify_message)
hs_transcript = handshake_hashes.digest(prf_name)
server_finished = secureHMAC(server_finished_key, hs_transcript,
prf_name)
self.assertEqual(
server_finished,
clean("""
9b 9b 14 1d 90 63 37 fb d2 cb dc e7 1d f4
de da 4a b4 2c 30 95 72 cb 7f ff ee 54 54 b7 8f 07 18
"""))
server_finished_message = Finished((3, 4)).create(server_finished)
server_finished_payload = server_finished_message.write()
# update handshake transcript to include Finished payload
handshake_hashes.update(server_finished_payload)
# derive keys for client application traffic
c_ap_traffic = derive_secret(secret, b"c ap traffic", handshake_hashes,
prf_name)
self.assertEqual(
c_ap_traffic,
clean("""
9e 40 64 6c e7 9a 7f 9d c0 5a f8 88 9b ce
65 52 87 5a fa 0b 06 df 00 87 f7 92 eb b7 c1 75 04 a5
"""))
# derive keys for server application traffic
s_ap_traffic = derive_secret(secret, b"s ap traffic", handshake_hashes,
prf_name)
self.assertEqual(
s_ap_traffic,
clean("""
a1 1a f9 f0 55 31 f8 56 ad 47 11 6b 45 a9
50 32 82 04 b4 f4 4b fb 6b 3a 4b 4f 1f 3f cb 63 16 43
"""))
# derive exporter master secret
exp_master = derive_secret(secret, b"exp master", handshake_hashes,
prf_name)
self.assertEqual(
exp_master,
clean("""
fe 22 f8 81 17 6e da 18 eb 8f 44 52 9e 67
92 c5 0c 9a 3f 89 45 2f 68 d8 ae 31 1b 43 09 d3 cf 50
"""))
# derive write traffic keys for app data
server_write_traffic_key = HKDF_expand_label(s_ap_traffic, b"key", b"",
16, prf_name)
self.assertEqual(
server_write_traffic_key,
clean("""
9f 02 28 3b 6c 9c 07 ef c2 6b b9 f2 ac
92 e3 56
"""))
server_write_traffic_iv = HKDF_expand_label(s_ap_traffic, b"iv", b"",
12, prf_name)
self.assertEqual(
server_write_traffic_iv,
clean("""
cf 78 2b 88 dd 83 54 9a ad f1 e9 84
"""))
# derive read traffic keys for app data
server_read_hs_key = HKDF_expand_label(c_hs_traffic, b"key", b"", 16,
prf_name)
self.assertEqual(
server_read_hs_key,
clean("""
db fa a6 93 d1 76 2c 5b 66 6a f5 d9 50
25 8d 01
"""))
server_read_hs_iv = HKDF_expand_label(c_hs_traffic, b"iv", b"", 12,
prf_name)
self.assertEqual(
server_read_hs_iv,
clean("""
5b d3 c7 1b 83 6e 0b 76 bb 73 26 5f
"""))
def test_digest_with_invalid_hash(self):
hh = HandshakeHashes()
with self.assertRaises(ValueError):
hh.digest('md2')
def test_update_with_str(self):
hh = HandshakeHashes()
hh.update(b'text')
def setUp(self):
self.hhashes = HandshakeHashes()
self.hhashes.update(bytearray(10))
def test_digest_sha224(self):
hh = HandshakeHashes()
self.assertEqual(
(b'\xd1J\x02\x8c*:+\xc9Ga\x02\xbb(\x824\xc4\x15\xa2\xb0'
b'\x1f\x82\x8e\xa6*\xc5\xb3\xe4/'), hh.digest('sha224'))