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import pytest
import cffi
from enum import Enum
ffi = cffi.FFI()
gs = ffi.string
RFC_SECRET = '12345678901234567890'
class DefaultPasswords(Enum):
ADMIN = '12345678'
USER = '123456'
ADMIN_TEMP = '123123123'
USER_TEMP = '234234234'
class DeviceErrorCode(Enum):
STATUS_OK = 0
NOT_PROGRAMMED = 3
WRONG_PASSWORD = 4
STATUS_NOT_AUTHORIZED = 5
@pytest.fixture(scope="module")
def C(request):
fp = '../NK_C_API.h'
declarations = []
with open(fp, 'r') as f:
declarations = f.readlines()
for declaration in declarations:
# extern int NK_write_totp_slot(int slot_number, char* secret, int time_window);
if 'extern' in declaration and not '"C"' in declaration:
declaration = declaration.replace('extern', '').strip()
print(declaration)
ffi.cdef(declaration)
C = ffi.dlopen("../build/libnitrokey.so")
# C.NK_set_debug(False)
C.NK_login(DefaultPasswords.ADMIN, DefaultPasswords.ADMIN_TEMP)
assert C.NK_user_authenticate(DefaultPasswords.USER, DefaultPasswords.USER_TEMP) == DeviceErrorCode.STATUS_OK
# C.NK_status()
def fin():
print ('\nFinishing connection to device')
C.NK_logout()
print ('Finished')
request.addfinalizer(fin)
return C
def test_enable_password_safe(C):
assert C.NK_lock_device() == DeviceErrorCode.STATUS_OK
assert C.NK_enable_password_safe('wrong_password') == DeviceErrorCode.WRONG_PASSWORD
assert C.NK_enable_password_safe(DefaultPasswords.USER) == DeviceErrorCode.STATUS_OK
def test_write_password_safe_slot(C):
assert C.NK_lock_device() == DeviceErrorCode.STATUS_OK
assert C.NK_write_password_safe_slot(0, 'slotname1', 'login1', 'pass1') == DeviceErrorCode.STATUS_NOT_AUTHORIZED
assert C.NK_enable_password_safe(DefaultPasswords.USER) == DeviceErrorCode.STATUS_OK
assert C.NK_write_password_safe_slot(0, 'slotname1', 'login1', 'pass1') == DeviceErrorCode.STATUS_OK
def test_get_password_safe_slot_name(C):
assert C.NK_enable_password_safe(DefaultPasswords.USER) == DeviceErrorCode.STATUS_OK
assert C.NK_write_password_safe_slot(0, 'slotname1', 'login1', 'pass1') == DeviceErrorCode.STATUS_OK
assert C.NK_lock_device() == DeviceErrorCode.STATUS_OK
assert gs(C.NK_get_password_safe_slot_name(0)) == ''
assert C.NK_get_last_command_status() == DeviceErrorCode.STATUS_NOT_AUTHORIZED
assert C.NK_enable_password_safe(DefaultPasswords.USER) == DeviceErrorCode.STATUS_OK
assert gs(C.NK_get_password_safe_slot_name(0)) == 'slotname1'
assert C.NK_get_last_command_status() == DeviceErrorCode.STATUS_OK
def test_get_password_safe_slot_login_password(C):
assert C.NK_enable_password_safe(DefaultPasswords.USER) == DeviceErrorCode.STATUS_OK
slot_login = C.NK_get_password_safe_slot_login(0)
assert C.NK_get_last_command_status() == DeviceErrorCode.STATUS_OK
assert gs(slot_login) == 'login1'
slot_password = gs(C.NK_get_password_safe_slot_password(0))
assert C.NK_get_last_command_status() == DeviceErrorCode.STATUS_OK
assert slot_password == 'pass1'
def test_erase_password_safe_slot(C):
assert C.NK_enable_password_safe(DefaultPasswords.USER) == DeviceErrorCode.STATUS_OK
assert C.NK_erase_password_safe_slot(0) == DeviceErrorCode.STATUS_OK
assert gs(C.NK_get_password_safe_slot_name(0)) == ''
assert C.NK_get_last_command_status() == DeviceErrorCode.STATUS_OK # TODO CHECK shouldn't this be DeviceErrorCode.NOT_PROGRAMMED ?
def test_password_safe_slot_status(C):
C.NK_set_debug(True)
assert C.NK_enable_password_safe(DefaultPasswords.USER) == DeviceErrorCode.STATUS_OK
assert C.NK_erase_password_safe_slot(0) == DeviceErrorCode.STATUS_OK
safe_slot_status = C.NK_get_password_safe_slot_status()
assert C.NK_get_last_command_status() == DeviceErrorCode.STATUS_OK
is_slot_programmed = list(ffi.cast("uint8_t [16]", safe_slot_status)[0:16])
print ((is_slot_programmed, len(is_slot_programmed)))
assert is_slot_programmed[
0] == 0 # FIXME not programmed, assuming erased in preceeding test, add writing and erasing
assert is_slot_programmed[1] == 1 # FIXME assuming slot 1 is programmed, not writing there in this tests, same as ^
# C.NK_set_debug(False)
def test_admin_PIN_change(C):
new_password = '123123123'
assert C.NK_change_admin_PIN('wrong_password', new_password) == DeviceErrorCode.WRONG_PASSWORD
assert C.NK_change_admin_PIN(DefaultPasswords.ADMIN, new_password) == DeviceErrorCode.STATUS_OK
assert C.NK_change_admin_PIN(new_password, DefaultPasswords.ADMIN) == DeviceErrorCode.STATUS_OK
def test_user_PIN_change(C):
new_password = '123123123'
assert C.NK_change_user_PIN('wrong_password', new_password) == DeviceErrorCode.WRONG_PASSWORD
assert C.NK_change_user_PIN(DefaultPasswords.USER, new_password) == DeviceErrorCode.STATUS_OK
assert C.NK_change_user_PIN(new_password, DefaultPasswords.USER) == DeviceErrorCode.STATUS_OK
def test_admin_retry_counts(C):
default_admin_retry_count = 3
assert C.NK_get_admin_retry_count() == default_admin_retry_count
assert C.NK_change_admin_PIN('wrong_password', DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.WRONG_PASSWORD
assert C.NK_get_admin_retry_count() == default_admin_retry_count - 1
assert C.NK_change_admin_PIN(DefaultPasswords.ADMIN, DefaultPasswords.ADMIN) == DeviceErrorCode.STATUS_OK
assert C.NK_get_admin_retry_count() == default_admin_retry_count
def test_user_retry_counts(C):
default_user_retry_count = 3
assert C.NK_get_user_retry_count() == default_user_retry_count
assert C.NK_enable_password_safe('wrong_password') == DeviceErrorCode.WRONG_PASSWORD
assert C.NK_get_user_retry_count() == default_user_retry_count - 1
assert C.NK_enable_password_safe(DefaultPasswords.USER) == DeviceErrorCode.STATUS_OK
assert C.NK_get_user_retry_count() == default_user_retry_count
def test_HOTP_RFC_no_pin_protection(C):
assert C.NK_first_authenticate(DefaultPasswords.ADMIN, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
assert C.NK_write_config(True, True, True, False, True, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
# https://tools.ietf.org/html/rfc4226#page-32
C.NK_write_hotp_slot(1, 'python_test', RFC_SECRET, 0, DefaultPasswords.ADMIN_TEMP)
test_data = [
755224, 287082, 359152, 969429, 338314, 254676, 287922, 162583, 399871, 520489,
]
for code in test_data:
r = C.NK_get_hotp_code(1)
assert code == r
def test_TOTP_RFC_no_pin_protection(C):
assert C.NK_first_authenticate(DefaultPasswords.ADMIN, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
assert C.NK_write_config(True, True, True, False, True, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
# test according to https://tools.ietf.org/html/rfc6238#appendix-B
C.NK_write_totp_slot(1, 'python_test', RFC_SECRET, 30, True, DefaultPasswords.ADMIN_TEMP)
test_data = [
(59, 1, 94287082),
(1111111109, 0x00000000023523EC, 7081804),
(1111111111, 0x00000000023523ED, 14050471),
(1234567890, 0x000000000273EF07, 89005924),
]
for t, T, code in test_data:
C.NK_totp_set_time(t)
r = C.NK_get_totp_code(1, T, 0, 30) # FIXME T is not changing the outcome
assert code == r
def test_get_slot_names(C):
C.NK_set_debug(True)
assert C.NK_first_authenticate(DefaultPasswords.ADMIN, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
assert C.NK_erase_totp_slot(0, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
# erasing slot invalidates temporary password, so requesting authentication
assert C.NK_first_authenticate(DefaultPasswords.ADMIN, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
assert C.NK_erase_hotp_slot(0, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
for i in range(16):
name = ffi.string(C.NK_get_totp_slot_name(i))
if name == '':
assert C.NK_get_last_command_status() == DeviceErrorCode.NOT_PROGRAMMED
for i in range(3):
name = ffi.string(C.NK_get_hotp_slot_name(i))
if name == '':
assert C.NK_get_last_command_status() == DeviceErrorCode.NOT_PROGRAMMED
def test_get_OTP_codes(C):
C.NK_set_debug(True)
assert C.NK_first_authenticate(DefaultPasswords.ADMIN, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
assert C.NK_erase_hotp_slot(0, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
assert C.NK_first_authenticate(DefaultPasswords.ADMIN, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
assert C.NK_erase_totp_slot(0, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
for i in range(16):
code = C.NK_get_totp_code(i, 0, 0, 0)
if code == 0:
assert C.NK_get_last_command_status() == DeviceErrorCode.NOT_PROGRAMMED
for i in range(3):
code = C.NK_get_hotp_code(i)
if code == 0:
assert C.NK_get_last_command_status() == DeviceErrorCode.NOT_PROGRAMMED
def test_get_code_user_authorize(C):
C.NK_set_debug(True)
assert C.NK_first_authenticate(DefaultPasswords.ADMIN, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
assert C.NK_write_totp_slot(0, 'python_otp_auth', RFC_SECRET, 30, True,
DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
# enable PIN protection of OTP codes with write_config
# TODO create convinience function on C API side to enable/disable OTP USER_PIN protection
assert C.NK_first_authenticate(DefaultPasswords.ADMIN, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
assert C.NK_write_config(True, True, True, True, False, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
code = C.NK_get_totp_code(0, 0, 0, 0)
assert code == 0
assert C.NK_get_last_command_status() == DeviceErrorCode.STATUS_NOT_AUTHORIZED
# disable PIN protection with write_config
assert C.NK_first_authenticate(DefaultPasswords.ADMIN, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
assert C.NK_write_config(True, True, True, False, True, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
code = C.NK_get_totp_code(0, 0, 0, 0)
assert code != 0
assert C.NK_get_last_command_status() == DeviceErrorCode.STATUS_OK
def cast_pointer_to_tuple(obj, typen, len):
# usage:
# config = cast_pointer_to_tuple(config_raw_data, 'uint8_t', 5)
return tuple(ffi.cast("%s [%d]" % (typen, len), obj)[0:len])
def test_read_write_config(C):
C.NK_set_debug(True)
# let's set sample config with pin protection and disabled capslock
assert C.NK_first_authenticate(DefaultPasswords.ADMIN, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
assert C.NK_write_config(True, False, True, True, False, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
config_raw_data = C.NK_read_config()
assert C.NK_get_last_command_status() == DeviceErrorCode.STATUS_OK
config = cast_pointer_to_tuple(config_raw_data, 'uint8_t', 5)
assert config == (True, False, True, True, False)
# restore defaults and check
assert C.NK_first_authenticate(DefaultPasswords.ADMIN, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
assert C.NK_write_config(True, True, True, False, True, DefaultPasswords.ADMIN_TEMP) == DeviceErrorCode.STATUS_OK
config_raw_data = C.NK_read_config()
assert C.NK_get_last_command_status() == DeviceErrorCode.STATUS_OK
config = cast_pointer_to_tuple(config_raw_data, 'uint8_t', 5)
assert config == (True, True, True, False, True)
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