path: root/unit_tests.py

#!/usr/bin/env python

"""
PKCS #11 unit tests, using Py11 and the Python unit_test framework.
"""

import unittest

from py11 import *
from py11.mutex import MutexDB


class Defaults:
    so_pin    = "fnord"
    user_pin  = "fnord"
    only_slot = 0
    verbose   = False
    p11util   = "./libpkcs11.so"
    dbname    = "unit_tests.db"
    server    = "../libhal/tests/test-rpc_server"

args = Defaults
p11  = None
rpc  = None

def main():
    from argparse import ArgumentParser
    parser = ArgumentParser(__doc__)
    parser.add_argument("--verbose", action = "store_true")
    parser.add_argument("--so-pin")
    parser.add_argument("--user-pin")
    parser.add_argument("--only-slot", type = int)
    parser.add_argument("--p11util")
    parser.add_argument("--dbname")
    parser.add_argument("--server")
    parser.set_defaults(**vars(Defaults))
    global args
    args = parser.parse_args()
    unittest.main(verbosity = 2 if args.verbose else 1)

def setUpModule():
    global p11
    p11 = PKCS11(args.p11util)

    from subprocess import Popen, PIPE
    from os import unlink, environ, geteuid
    from os.path import abspath, isfile

    if args.verbose:
        print "Initializing database"
    db = abspath(args.dbname)
    if isfile(db):
        unlink(db)
    environ["PKCS11_DATABASE"] = db
    Popen((args.p11util, "-sup"), stdin = PIPE).communicate(
        "{args.so_pin}\n{args.user_pin}\n".format(args = args))

    if isfile(args.server):
        if args.verbose:
            print "Starting RPC server"
        cmd = [args.server]
        if geteuid() != 0:
            cmd.insert(0, "sudo")
        global rpc
        rpc = Popen(cmd)

    if args.verbose:
        print "Setup complete"

def tearDownModule():
    from os import unlink
    unlink(args.dbname)
    global rpc
    if rpc is not None:
        if geteuid() == 0:
            rpc.terminate()
        else:
            from subprocess import check_call
            check_call(("sudo", "kill", str(rpc.pid)))


class TestInit(unittest.TestCase):
    """
    Test all the flavors of C_Initialize().
    """

    def test_mutex_none(self):
        p11.C_Initialize()

    def test_mutex_os(self):
        p11.C_Initialize(CKF_OS_LOCKING_OK)

    def test_mutex_user(self):
        mdb = MutexDB()
        p11.C_Initialize(0, mdb.create, mdb.destroy, mdb.lock, mdb.unlock)

    def test_mutex_both(self):
        mdb = MutexDB()
        p11.C_Initialize(CKF_OS_LOCKING_OK, mdb.create, mdb.destroy, mdb.lock, mdb.unlock)

    def tearDown(self):
        p11.C_Finalize()


class TestDevice(unittest.TestCase):
    """
    Test basic device stuff like C_GetSlotList(), C_OpenSession(), and C_Login().
    """

    @classmethod
    def setUpClass(cls):
        p11.C_Initialize()

    @classmethod
    def tearDownClass(cls):
        p11.C_Finalize()

    def tearDown(self):
        p11.C_CloseAllSessions(args.only_slot)

    def test_getSlots(self):
        self.assertEqual(p11.C_GetSlotList(), (args.only_slot,))

    def test_getTokenInfo(self):
        token_info = p11.C_GetTokenInfo(args.only_slot)
        self.assertIsInstance(token_info, CK_TOKEN_INFO)
        self.assertEqual(token_info.label.rstrip(), "Cryptech Token")

    def test_sessions_serial(self):
        rw_session = p11.C_OpenSession(args.only_slot, CKF_RW_SESSION | CKF_SERIAL_SESSION)
        ro_session = p11.C_OpenSession(args.only_slot, CKF_SERIAL_SESSION)

    def test_sessions_parallel(self):
        # Cooked API doesn't allow this mistake, must use raw API to test
        from ctypes import byref
        handle = CK_SESSION_HANDLE()
        notify = CK_NOTIFY()
        with self.assertRaises(CKR_SESSION_PARALLEL_NOT_SUPPORTED):
            p11.so.C_OpenSession(args.only_slot, CKF_RW_SESSION, None, notify, byref(handle))
        with self.assertRaises(CKR_SESSION_PARALLEL_NOT_SUPPORTED):
            p11.so.C_OpenSession(args.only_slot, 0,              None, notify, byref(handle))

    def test_login_user(self):
        rw_session = p11.C_OpenSession(args.only_slot, CKF_RW_SESSION | CKF_SERIAL_SESSION)
        ro_session = p11.C_OpenSession(args.only_slot, CKF_SERIAL_SESSION)
        p11.C_Login(ro_session, CKU_USER, args.user_pin)
        p11.C_Logout(ro_session)

    def test_login_so(self):
        rw_session = p11.C_OpenSession(args.only_slot, CKF_RW_SESSION | CKF_SERIAL_SESSION)
        ro_session = p11.C_OpenSession(args.only_slot, CKF_SERIAL_SESSION)
        self.assertRaises(CKR_SESSION_READ_ONLY_EXISTS, p11.C_Login, ro_session, CKU_SO, args.so_pin)
        p11.C_CloseSession(ro_session)
        p11.C_Login(rw_session, CKU_SO, args.so_pin)
        self.assertRaises(CKR_SESSION_READ_WRITE_SO_EXISTS, p11.C_OpenSession, args.only_slot, CKF_SERIAL_SESSION)
        p11.C_Logout(rw_session)

    def test_random(self):
        # Testing that what this produces really is random seems beyond
        # the scope of a unit test.
        session = p11.C_OpenSession(args.only_slot)
        n = 17
        random = p11.C_GenerateRandom(session, n)
        self.assertIsInstance(random, str)
        self.assertEqual(len(random), n)

    def test_findObjects(self):
        session = p11.C_OpenSession(args.only_slot)
        p11.C_FindObjectsInit(session, CKA_CLASS = CKO_PUBLIC_KEY)
        with self.assertRaises(CKR_OPERATION_ACTIVE):
            p11.C_FindObjectsInit(session, CKA_CLASS = CKO_PRIVATE_KEY)
        for handle in p11.C_FindObjects(session):
            self.assertIsInstance(handle, (int, long))
        p11.C_FindObjectsFinal(session)


class TestKeys(unittest.TestCase):
    """
    Tests involving keys.
    """

    oid_p256 = "".join(chr(i) for i in (0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07))
    oid_p384 = "".join(chr(i) for i in (0x06, 0x05, 0x2b, 0x81, 0x04, 0x00, 0x22))
    oid_p521 = "".join(chr(i) for i in (0x06, 0x05, 0x2b, 0x81, 0x04, 0x00, 0x23))

    @classmethod
    def setUpClass(cls):
        p11.C_Initialize()

    @classmethod
    def tearDownClass(cls):
        p11.C_Finalize()

    def setUp(self):
        self.session = p11.C_OpenSession(args.only_slot)
        p11.C_Login(self.session, CKU_USER, args.user_pin)

    def tearDown(self):
        for handle in p11.FindObjects(self.session):
            p11.C_DestroyObject(self.session, handle)
        p11.C_CloseAllSessions(args.only_slot)
        del self.session

    def assertIsKeypair(self, public_handle, private_handle = None):
        if isinstance(public_handle, tuple) and private_handle is None:
            public_handle, private_handle = public_handle
        self.assertEqual(p11.C_GetAttributeValue(self.session, public_handle,  CKA_CLASS), {CKA_CLASS: CKO_PUBLIC_KEY})
        self.assertEqual(p11.C_GetAttributeValue(self.session, private_handle, CKA_CLASS), {CKA_CLASS: CKO_PRIVATE_KEY})

    def test_keygen_token_vs_session(self):
        self.assertIsKeypair(
          p11.C_GenerateKeyPair(self.session, CKM_EC_KEY_PAIR_GEN, CKA_TOKEN = False,
                                CKA_ID = "EC-P256", CKA_EC_PARAMS = self.oid_p256,
                                CKA_SIGN = True, CKA_VERIFY = True))
        self.assertIsKeypair(
          p11.C_GenerateKeyPair(self.session, CKM_EC_KEY_PAIR_GEN, CKA_TOKEN = True,
                                CKA_ID = "EC-P256", CKA_EC_PARAMS = self.oid_p256,
                                CKA_SIGN = True, CKA_VERIFY = True))
        self.assertIsKeypair(
          p11.C_GenerateKeyPair(self.session, CKM_EC_KEY_PAIR_GEN,
                                public_CKA_TOKEN = False, private_CKA_TOKEN = True,
                                CKA_ID = "EC-P256", CKA_EC_PARAMS = self.oid_p256,
                                CKA_SIGN = True, CKA_VERIFY = True))
        self.assertIsKeypair(
          p11.C_GenerateKeyPair(self.session, CKM_EC_KEY_PAIR_GEN,
                                public_CKA_TOKEN = True, private_CKA_TOKEN = False,
                                CKA_ID = "EC-P256", CKA_EC_PARAMS = self.oid_p256,
                                CKA_SIGN = True, CKA_VERIFY = True))

    def test_gen_sign_verify_ecdsa_p256_sha256(self):
        public_key, private_key = p11.C_GenerateKeyPair(self.session, CKM_EC_KEY_PAIR_GEN,
                                                        CKA_ID = "EC-P256", CKA_EC_PARAMS = self.oid_p256,
                                                        CKA_SIGN = True, CKA_VERIFY = True)
        self.assertIsKeypair(public_key, private_key)
        hamster = "Your mother was a hamster"
        p11.C_SignInit(self.session, CKM_ECDSA_SHA256, private_key)
        sig = p11.C_Sign(self.session, hamster)
        self.assertIsInstance(sig, str)
        p11.C_VerifyInit(self.session, CKM_ECDSA_SHA256, public_key)
        p11.C_Verify(self.session, hamster, sig)

    @unittest.skip("SHA-384 not available in current build")
    def test_gen_sign_verify_ecdsa_p384_sha384(self):
        public_key, private_key = p11.C_GenerateKeyPair(self.session, CKM_EC_KEY_PAIR_GEN,
                                                        CKA_ID = "EC-P384", CKA_EC_PARAMS = self.oid_p384,
                                                        CKA_SIGN = True, CKA_VERIFY = True)
        self.assertIsKeypair(public_key, private_key)
        hamster = "Your mother was a hamster"
        p11.C_SignInit(self.session, CKM_ECDSA_SHA384, private_key)
        sig = p11.C_Sign(self.session, hamster)
        self.assertIsInstance(sig, str)
        p11.C_VerifyInit(self.session, CKM_ECDSA_SHA384, public_key)
        p11.C_Verify(self.session, hamster, sig)

    @unittest.skip("SHA-512 not available in current build")
    def test_gen_sign_verify_ecdsa_p521_sha512(self):
        public_key, private_key = p11.C_GenerateKeyPair(self.session, CKM_EC_KEY_PAIR_GEN,
                                                        CKA_ID = "EC-P521", CKA_EC_PARAMS = self.oid_p521,
                                                        CKA_SIGN = True, CKA_VERIFY = True)
        self.assertIsKeypair(public_key, private_key)
        hamster = "Your mother was a hamster"
        p11.C_SignInit(self.session, CKM_ECDSA_SHA512, private_key)
        sig = p11.C_Sign(self.session, hamster)
        self.assertIsInstance(sig, str)
        p11.C_VerifyInit(self.session, CKM_ECDSA_SHA512, public_key)
        p11.C_Verify(self.session, hamster, sig)

    def test_gen_rsa_1024(self):
        self.assertIsKeypair(
          p11.C_GenerateKeyPair(self.session, CKM_RSA_PKCS_KEY_PAIR_GEN, CKA_MODULUS_BITS = 1024,
                                CKA_ID = "RSA-1024", CKA_SIGN = True, CKA_VERIFY = True))

    @unittest.skip("RSA key generation is still painfully slow")
    def test_gen_rsa_2048(self):
        self.assertIsKeypair(
          p11.C_GenerateKeyPair(self.session, CKM_RSA_PKCS_KEY_PAIR_GEN, CKA_MODULUS_BITS = 2048,
                                CKA_ID = "RSA-1024", CKA_SIGN = True, CKA_VERIFY = True))

    @staticmethod
    def _build_ecpoint(x, y):
        bytes_per_coordinate = (max(x.bit_length(), y.bit_length()) + 15) / 16
        value = chr(0x04) + ("%0*x%0*x" % (bytes_per_coordinate, x, bytes_per_coordinate, y)).decode("hex")
        if len(value) < 128:
            length = chr(len(value))
        else:
            n = len(value).bit_length()
            length = chr((n + 7) / 8) + ("%0*x" % ((n + 15) / 16, len(value))).decode("hex")
        tag = chr(0x04)
        return tag + length + value

    def test_canned_ecdsa_p256_verify(self):
        Q = self._build_ecpoint(0x8101ece47464a6ead70cf69a6e2bd3d88691a3262d22cba4f7635eaff26680a8,
                                0xd8a12ba61d599235f67d9cb4d58f1783d3ca43e78f0a5abaa624079936c0c3a9)
        H = "7c3e883ddc8bd688f96eac5e9324222c8f30f9d6bb59e9c5f020bd39ba2b8377".decode("hex")
        r = "7214bc9647160bbd39ff2f80533f5dc6ddd70ddf86bb815661e805d5d4e6f27c".decode("hex")
        s = "7d1ff961980f961bdaa3233b6209f4013317d3e3f9e1493592dbeaa1af2bc367".decode("hex")
        handle = p11.C_CreateObject(
          session           = self.session,
          CKA_CLASS         = CKO_PUBLIC_KEY,
          CKA_KEY_TYPE      = CKK_EC,
          CKA_LABEL         = "EC-P-256 test case from \"Suite B Implementer's Guide to FIPS 186-3\"",
          CKA_ID            = "EC-P-256",
          CKA_VERIFY        = True,
          CKA_EC_POINT      = Q,
          CKA_EC_PARAMS     = self.oid_p256)
        p11.C_VerifyInit(self.session, CKM_ECDSA, handle)
        p11.C_Verify(self.session, H, r + s)

    def test_canned_ecdsa_p384_verify(self):
        Q = self._build_ecpoint(0x1fbac8eebd0cbf35640b39efe0808dd774debff20a2a329e91713baf7d7f3c3e81546d883730bee7e48678f857b02ca0,
                                0xeb213103bd68ce343365a8a4c3d4555fa385f5330203bdd76ffad1f3affb95751c132007e1b240353cb0a4cf1693bdf9)
        H = "b9210c9d7e20897ab86597266a9d5077e8db1b06f7220ed6ee75bd8b45db37891f8ba5550304004159f4453dc5b3f5a1".decode("hex")
        r = "a0c27ec893092dea1e1bd2ccfed3cf945c8134ed0c9f81311a0f4a05942db8dbed8dd59f267471d5462aa14fe72de856".decode("hex")
        s = "20ab3f45b74f10b6e11f96a2c8eb694d206b9dda86d3c7e331c26b22c987b7537726577667adadf168ebbe803794a402".decode("hex")
        handle = p11.C_CreateObject(
          session           = self.session,
          CKA_CLASS         = CKO_PUBLIC_KEY,
          CKA_KEY_TYPE      = CKK_EC,
          CKA_LABEL         = "EC-P-384 test case from \"Suite B Implementer's Guide to FIPS 186-3\"",
          CKA_ID            = "EC-P-384",
          CKA_VERIFY        = True,
          CKA_EC_POINT      = Q,
          CKA_EC_PARAMS     = self.oid_p384)
        p11.C_VerifyInit(self.session, CKM_ECDSA, handle)
        p11.C_Verify(self.session, H, r + s)


if __name__ == "__main__":
    main()