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011f57e0ec
- Fix for "bug#16755 Please find a SSL library that is FLOSS-Exception / LGPL copyrighted"
91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
/* random.hpp
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*
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* Copyright (C) 2003 Sawtooth Consulting Ltd.
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*
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* This file is part of yaSSL.
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*
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* yaSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* There are special exceptions to the terms and conditions of the GPL as it
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* is applied to yaSSL. View the full text of the exception in the file
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* FLOSS-EXCEPTIONS in the directory of this software distribution.
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*
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* yaSSL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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/* random.hpp provides a crypto secure Random Number Generator using an OS
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specific seed
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*/
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#ifndef TAO_CRYPT_RANDOM_HPP
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#define TAO_CRYPT_RANDOM_HPP
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#include "arc4.hpp"
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#include "error.hpp"
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namespace TaoCrypt {
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// OS specific seeder
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class OS_Seed {
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public:
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OS_Seed();
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~OS_Seed();
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void GenerateSeed(byte*, word32 sz);
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Error GetError() const { return error_; }
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private:
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#if defined(_WIN32)
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#if defined(_WIN64)
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typedef unsigned __int64 ProviderHandle;
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// type HCRYPTPROV, avoid #include <windows.h>
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#else
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typedef unsigned long ProviderHandle;
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#endif
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ProviderHandle handle_;
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#else
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int fd_;
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#endif
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Error error_;
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OS_Seed(const OS_Seed&); // hide copy
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OS_Seed& operator=(const OS_Seed&); // hide assign
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};
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// secure Random Nnumber Generator
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class RandomNumberGenerator {
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public:
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RandomNumberGenerator();
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~RandomNumberGenerator() {}
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void GenerateBlock(byte*, word32 sz);
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byte GenerateByte();
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ErrorNumber GetError() const { return seed_.GetError().What(); }
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private:
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OS_Seed seed_;
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ARC4 cipher_;
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RandomNumberGenerator(const RandomNumberGenerator&); // hide copy
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RandomNumberGenerator operator=(const RandomNumberGenerator&); // && assign
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};
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} // namespace
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#endif // TAO_CRYPT_RANDOM_HPP
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