#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
-""" GOST R 34.11-2012 (Streebog) hash function common files
+"""GOST R 34.11-2012 (Streebog) hash function common files
This is implementation of :rfc:`6986`. Most function and variable names are
taken according to specification's terminology.
from pygost.iface import PEP247
from pygost.utils import hexdec
from pygost.utils import strxor
-from pygost.utils import xrange # pylint: disable=redefined-builtin
+from pygost.utils import xrange
BLOCKSIZE = 64
-# pylint: disable=bad-whitespace,bad-continuation
Pi = bytearray((
252, 238, 221, 17, 207, 110, 49, 22, 251, 196, 250,
218, 35, 197, 4, 77, 233, 119, 240, 219, 147, 46,
6, 14, 22, 30, 38, 46, 54, 62,
7, 15, 23, 31, 39, 47, 55, 63,
)
-# pylint: disable=bad-whitespace,bad-continuation
C = [hexdec("".join(s))[::-1] for s in (
(
def add512bit(a, b):
- """ Add two 512 integers
+ """Add two 512 integers
"""
a = bytearray(a)
b = bytearray(b)
class GOST34112012(PEP247):
- """ GOST 34.11-2012 big-endian hash
+ """GOST 34.11-2012 big-endian hash
>>> m = GOST34112012(digest_size=32)
>>> m.update("foo")
return self._digest_size
def update(self, data):
- """ Append data that has to be hashed
+ """Append data that has to be hashed
"""
self.data += data
def digest(self):
- """ Get hash of the provided data
+ """Get hash of the provided data
"""
hsh = BLOCKSIZE * (b"\x01" if self.digest_size == 32 else b"\x00")
chk = bytearray(BLOCKSIZE * b"\x00")