Skip to main content
Donate to the Python Software Foundation or Purchase a PyCharm License to Benefit the PSF! Donate Now

Pure Python GOST cryptographic functions library

Project description

Pure Python 2.7/3.x GOST cryptographic functions library.

GOST is GOvernment STandard of Russian Federation (and Soviet Union).

  • GOST 28147-89 (RFC 5830) block cipher with ECB, CNT (CTR), CFB, MAC, CBC (RFC 4357) modes of operation
  • various 28147-89-related S-boxes included
  • GOST R 34.11-94 hash function (RFC 5831)
  • GOST R 34.11-94 based PBKDF2 function
  • GOST R 34.11-2012 Стрибог (Streebog) hash function (RFC 6986)
  • GOST R 34.11-2012 based PBKDF2 function (Р 50.1.111-2016)
  • GOST R 34.10-2001 (RFC 5832) public key signature function
  • GOST R 34.10-2012 (RFC 7091) public key signature function
  • various 34.10 curve parameters included
  • VKO GOST R 34.10-2001 key agreement function (RFC 4357)
  • VKO GOST R 34.10-2012 key agreement function (RFC 7836)
  • 28147-89 and CryptoPro key wrapping (RFC 4357)
  • 28147-89 CryptoPro key meshing for CFB and CBC modes (RFC 4357)
  • RFC 4491 (using GOST algorithms with X.509) compatibility helpers
  • GOST R 34.12-2015 128-bit block cipher Кузнечик (Kuznechik) (RFC 7801)
  • GOST R 34.12-2015 64-bit block cipher Магма (Magma)
  • GOST R 34.13-2015 padding methods and block cipher modes of operation (ECB, CTR, OFB, CBC, CFB, MAC)
  • PEP247-compatible hash/MAC functions

Known problems: low performance and non time-constant calculations.

Example 34.10-2012 keypair generation, signing and verifying:

>>> from pygost.gost3410 import CURVE_PARAMS
>>> from pygost.gost3410 import GOST3410Curve
>>> curve = GOST3410Curve(*CURVE_PARAMS["GostR3410_2012_TC26_ParamSetA"])
>>> from os import urandom
>>> prv_raw = urandom(32)
>>> from pygost.gost3410 import prv_unmarshal
>>> prv = prv_unmarshal(prv_raw)
>>> from pygost.gost3410 import public_key
>>> pub = public_key(curve, prv)
>>> from pygost.gost3410 import pub_marshal
>>> from pygost.utils import hexenc
>>> print "Public key is:", hexenc(pub_marshal(pub))
>>> from pygost import gost34112012256
>>> data_for_signing = b"some data"
>>> dgst =
>>> from pygost.gost3410 import sign
>>> signature = sign(curve, prv, dgst, mode=2012)
>>> from pygost.gost3410 import verify
>>> verify(curve, pub, dgst, signature, mode=2012)

Other examples can be found in docstrings and unittests.

PyGOST is free software: see the file COPYING for copying conditions.

PyGOST’es home page is: You can read about GOST algorithms more:

Please send questions, bug reports and patches to mailing list. Announcements also go to this mailing list.

Development Git source code repository currently is located here:

Project details

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
pygost-3.15.tar.gz (68.2 kB) Copy SHA256 hash SHA256 Source None

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN SignalFx SignalFx Supporter DigiCert DigiCert EV certificate StatusPage StatusPage Status page