Swiften/StringCodecs/SHA1.h

/*
 * Copyright (c) 2010-2012 Remko Tronçon
 * Licensed under the GNU General Public License v3.
 * See Documentation/Licenses/GPLv3.txt for more information.
 */

#pragma once

#ifdef SWIFTEN_PLATFORM_WIN32
#include "SHA1_Windows.h"
#else

#include <vector>
#include <boost/cstdint.hpp>

#include <Swiften/Base/API.h>
#include <Swiften/Base/ByteArray.h>
#include <Swiften/Base/SafeByteArray.h>

namespace Swift {
  class SWIFTEN_API SHA1 {
    public:
      SHA1();

      SHA1& update(const std::vector<unsigned char>& data);
      std::vector<unsigned char> getHash() const;

      static ByteArray getHash(const ByteArray& data);
      static ByteArray getHash(const SafeByteArray& data);

      ByteArray operator()(const SafeByteArray& data) {
        return getHash(data);
      }

      ByteArray operator()(const ByteArray& data) {
        return getHash(data);
      }

    private:
      typedef struct {
          boost::uint32_t state[5];
          boost::uint32_t count[2];
          boost::uint8_t buffer[64];
      } CTX;
      static void Init(CTX* context);
      static void Transform(boost::uint32_t state[5], boost::uint8_t buffer[64]);
      static void Update(CTX* context, boost::uint8_t* data, unsigned int len);
      static void Final(boost::uint8_t digest[20], CTX* context);

      template<typename Container> static ByteArray getHashInternal(const Container& input);

    private:
      CTX context;
  };
}

#endif