def der_read(der_data, expected_t=None):
t = byte2int(der_data[0])
if expected_t is not None and expected_t != t:
raise ValueError('Wrong tag. Expected: %x, got: %x' % (expected_t, t))
l = byte2int(der_data[1])
offs = 2
if l > 0x80:
n_bytes = l - 0x80
l = b2len(der_data[offs:offs + n_bytes])
offs = offs + n_bytes
v = der_data[offs:offs + l]
rest = der_data[offs + l:]
if expected_t is None:
return t, v, rest
return v, rest
def der_read(der_data, expected_t=None):
t = byte2int(der_data[0])
if expected_t is not None and expected_t != t:
raise ValueError('Wrong tag. Expected: %x, got: %x' % (expected_t, t))
l = byte2int(der_data[1])
offs = 2
if l > 0x80:
n_bytes = l - 0x80
l = b2len(der_data[offs:offs + n_bytes])
offs = offs + n_bytes
v = der_data[offs:offs + l]
rest = der_data[offs + l:]
if expected_t is None:
return t, v, rest
return v, rest
def set_flag(data, flagkey, flagmask, value=True):
flags = byte2int(data.get(flagkey, b'\0')[0])
if value:
flags |= flagmask
else:
flags &= ~flagmask
data[flagkey] = int2byte(flags)
def set_flag(data, flagkey, flagmask, value=True):
flags = byte2int(data.get(flagkey, b'\0')[0])
if value:
flags |= flagmask
else:
flags &= ~flagmask
data[flagkey] = int2byte(flags)
def __init__(self, key):
self._key = key
self._authenticated = False
try:
self._raw_data = self._key.fetch_object(YKPIV_OBJ_PIVMAN_DATA)
# TODO: Remove in a few versions...
if byte2int(self._raw_data[0]) != TAG_PIVMAN_DATA:
self._data = {}
self._data[TAG_PIN_TIMESTAMP] = self._raw_data
self._data[TAG_SALT] = self._key.fetch_object(
YKPIV_OBJ_PIVMAN_DATA + 1)
else:
# END legacy stuff
self._data = parse_pivtool_data(self._raw_data)
except PivError:
self._raw_data = serialize_pivtool_data({})
self._data = {}
def __init__(self, key):
self._key = key
self._authenticated = False
try:
self._raw_data = self._key.fetch_object(YKPIV_OBJ_PIVMAN_DATA)
# TODO: Remove in a few versions...
if byte2int(self._raw_data[0]) != TAG_PIVMAN_DATA:
self._data = {}
self._data[TAG_PIN_TIMESTAMP] = self._raw_data
self._data[TAG_SALT] = self._key.fetch_object(
YKPIV_OBJ_PIVMAN_DATA + 1)
else:
# END legacy stuff
self._data = parse_pivtool_data(self._raw_data)
except PivError:
self._raw_data = serialize_pivtool_data({})
self._data = {}
def b2len(bs):
l = 0
for b in bs:
l *= 256
l += byte2int(b)
return l
def has_flag(data, flagkey, flagmask):
flags = byte2int(data.get(flagkey, b'\0')[0])
return bool(flags & flagmask)
def b2len(bs):
l = 0
for b in bs:
l *= 256
l += byte2int(b)
return l
def has_flag(data, flagkey, flagmask):
flags = byte2int(data.get(flagkey, b'\0')[0])
return bool(flags & flagmask)