1 Pure Python 2.7/3.x GOST cryptographic functions library.
3 GOST is GOvernment STandard of Russian Federation (and Soviet Union).
5 * GOST 28147-89 (RFC 5830) block cipher with ECB, CNT (CTR), CFB, MAC,
6 CBC (RFC 4357) modes of operation
7 * various 28147-89-related S-boxes included
8 * GOST R 34.11-94 hash function (RFC 5831)
9 * GOST R 34.11-2012 Стрибог (Streebog) hash function (RFC 6986)
10 * GOST R 34.10-2001 (RFC 5832) public key signature function
11 * GOST R 34.10-2012 (RFC 7091) public key signature function
12 * various 34.10 curve parameters included
13 * VKO 34.10-2001 Diffie-Hellman function (RFC 4357)
14 * VKO 34.10-2012 Diffie-Hellman function
15 * 28147-89 and CryptoPro key wrapping (RFC 4357)
16 * 28147-89 CryptoPro key meshing for CFB mode (RFC 4357)
17 * RFC 4491 (using GOST algorithms with X.509) compatibility helpers
18 * GOST R 34.12-2015 128-bit block cipher Кузнечик (Kuznechik) (RFC 7801)
19 * GOST R 34.13-2015 padding methods
20 * PEP247-compatible hash/MAC functions
22 Known problems: low performance and non time-constant calculations.
24 Example X.509 compatible 34.10-2012 keypair generation, signing and
25 verifying its signature:
27 >>> from pygost import x509
28 >>> prv, pub = x509.keypair_gen(urandom(64), mode=2012)
29 >>> data = b'some data'
30 >>> signature = x509.sign(prv, data, mode=2012)
31 >>> x509.verify(pub, data, signature, mode=2012)
34 Other examples can be found in docstrings.
36 PyGOST is free software: see the file COPYING for copying conditions.
38 PyGOST'es home page is: http://www.cypherpunks.ru/pygost/
39 You can read about GOST algorithms more: http://www.cypherpunks.ru/gost/
41 Please send questions, bug reports and patches to
42 https://lists.cypherpunks.ru/mailman/listinfo/gost
43 mailing list. Announcements also go to this mailing list.
45 Development Git source code repository currently is located here:
46 http://git.cypherpunks.ru/cgit.cgi/pygost.git/