Питон гост 28147 89

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mosquito/pygost

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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 * Coordinates conversion from twisted Edwards to Weierstrass form and vice versa * 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 CURVES >>> curve = CURVES["id-tc26-gost-3410-12-512-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 = gost34112012256.new(data_for_signing).digest() >>> from pygost.gost3410 import sign >>> signature = sign(curve, prv, dgst, mode=2012) >>> from pygost.gost3410 import verify >>> verify(curve, pub, dgst, signature, mode=2012) True Other examples can be found in docstrings and unittests. Example self-signed X.509 certificate creation can be found in pygost/asn1schemas/cert-selfsigned-example.py. PyGOST is free software: see the file COPYING for copying conditions. PyGOST'es home page is: http://pygost.cypherpunks.ru/ You can read about GOST algorithms more: http://gost.cypherpunks.ru/ Please send questions, bug reports and patches to https://lists.cypherpunks.ru/mailman/listinfo/gost mailing list. Announcements also go to this mailing list. Development Git source code repository currently is located here: https://git.cypherpunks.ru/cgit.cgi/pygost.git/ 

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GOST 28147-89 implementation

frarrr/GOST_28147-89

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Python implementation of GOST 28147-89. There are two available encryption modes specified in GOST: ECB and CNT.

Provided GUI made with tkinter toolkit allows choosing between standart S-boxes, setting custom key and initialization vector for CNT mode.

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🔓 Implementation of GOST 28147-89 encryption in C and Python

nikolaevv/crypt

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Реализация шифрования ГОСТ 28147-89 на C и Python

ГОСТ 28147-89 — алгоритм симметричного блочного шифрования, основанный на классической итерационной схеме Фейстеля. Имеет 4 режима работы, из них реализован режим простой замены.

В обоих реализациях доступны методы создания хэша и его сверки.

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🔓 Implementation of GOST 28147-89 encryption in C and Python

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PyGOST

PyGOST is pure Python 2.7/3.x GOST cryptographic functions library. GOST is GOvernment STandard of Russian Federation (and Soviet Union). It is copylefted free software: licenced under GPLv3. You can read about GOST algorithms more.

Currently supported algorithms are:

• 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
• Coordinates conversion from twisted Edwards to Weierstrass form and vice versa
• 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), ISO 10126 padding
• MGM AEAD mode for 64 and 128 bit ciphers (RFC 9058)
• CTR-ACPKM, OMAC-ACPKM-Master modes of operation (Р 1323565.1.017-2018)
• KExp15/KImp15 key export/import functions (Р 1323565.1.017-2018)
• KDF_GOSTR3411_2012_256, KDF_TREE_GOSTR3411_2012_256 (Р 50.1.113-2016)
• KEG export key generation function (Р 1323565.1.020-2018)
• PEP247-compatible hash/MAC functions

Example 34.10-2012 keypair generation, signing and verifying:

>>> from pygost.gost3410 import CURVES >>> curve = CURVES["id-tc26-gost-3410-12-512-paramSetA"] >>> from os import urandom >>> prv_raw = urandom(64) >>> 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 gost34112012512 >>> data_for_signing = b"some data" >>> dgst = gost34112012512.new(data_for_signing).digest()[::-1] >>> from pygost.gost3410 import sign >>> signature = sign(curve, prv, dgst) >>> from pygost.gost3410 import verify >>> verify(curve, pub, dgst, signature) True

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

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