44 lines
1.2 KiB
Python
44 lines
1.2 KiB
Python
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# Copyright (C) 2011 Yann GUIBET <yannguibet@gmail.com>
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# See LICENSE for details.
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from pyelliptic.openssl import OpenSSL
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def hmac_sha256(k, m):
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"""
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Compute the key and the message with HMAC SHA5256
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"""
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key = OpenSSL.malloc(k, len(k))
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d = OpenSSL.malloc(m, len(m))
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md = OpenSSL.malloc(0, 32)
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i = OpenSSL.pointer(OpenSSL.c_int(0))
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OpenSSL.HMAC(OpenSSL.EVP_sha256(), key, len(k), d, len(m), md, i)
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return md.raw
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def hmac_sha512(k, m):
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"""
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Compute the key and the message with HMAC SHA512
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"""
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key = OpenSSL.malloc(k, len(k))
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d = OpenSSL.malloc(m, len(m))
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md = OpenSSL.malloc(0, 64)
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i = OpenSSL.pointer(OpenSSL.c_int(0))
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OpenSSL.HMAC(OpenSSL.EVP_sha512(), key, len(k), d, len(m), md, i)
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return md.raw
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def pbkdf2(password, salt=None, i=10000, keylen=64):
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if salt is None:
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salt = OpenSSL.rand(8)
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p_password = OpenSSL.malloc(password, len(password))
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p_salt = OpenSSL.malloc(salt, len(salt))
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output = OpenSSL.malloc(0, keylen)
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OpenSSL.PKCS5_PBKDF2_HMAC(p_password, len(password), p_salt,
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len(p_salt), i, OpenSSL.EVP_sha256(),
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keylen, output)
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return salt, output.raw
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