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////////////////////////////////////////////////////////////////////////////////////////
//
// Nestopia - NES/Famicom emulator written in C++
//
// Copyright (C) 2003-2008 Martin Freij
//
// This file is part of Nestopia.
//
// Nestopia is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// Nestopia is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Nestopia; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
////////////////////////////////////////////////////////////////////////////////////////
#ifndef NST_SHA1_H
#define NST_SHA1_H
#ifdef NST_PRAGMA_ONCE
#pragma once
#endif
namespace Nes
{
namespace Core
{
namespace Sha1
{
class Key;
void NST_CALL Compute(Key&,const byte*,dword);
class Key : public ImplicitBool<Key>
{
public:
Key();
enum
{
DIGEST_SIZE = 20
};
typedef const dword (&Digest)[5];
void Clear();
Digest GetDigest() const;
bool operator == (const Key& key) const;
private:
friend void NST_CALL Compute(Key&,const byte*,dword);
inline void Update() const;
void Compute(const byte*,dword);
void Finalize() const;
qaword count;
dword state[5];
mutable ibool finalized;
mutable dword final[5];
byte buffer[64];
public:
bool operator != (const Key& key) const
{
return !(*this == key);
}
bool operator ! () const
{
return !count;
}
};
}
}
}
#endif
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