MessageDigest.h

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/*
 * Copyright (c) 2004 X-Way Rights BV
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef _CLASS_BEE_SECURITY_MESSAGEDIGEST_H
#define _CLASS_BEE_SECURITY_MESSAGEDIGEST_H

#ifdef __cplusplus

#include "beecrypt/c++/security/MessageDigestSpi.h"
using beecrypt::security::MessageDigestSpi;
#include "beecrypt/c++/security/Provider.h"
using beecrypt::security::Provider;
#include "beecrypt/c++/security/NoSuchAlgorithmException.h"
using beecrypt::security::NoSuchAlgorithmException;
#include "beecrypt/c++/security/NoSuchProviderException.h"
using beecrypt::security::NoSuchProviderException;

namespace beecrypt {
    namespace security {
        class BEECRYPTCXXAPI MessageDigest : public Object
        {
        public:
            static MessageDigest* getInstance(const String& algorithm) throw (NoSuchAlgorithmException);
            static MessageDigest* getInstance(const String& algorithm, const String& provider) throw (NoSuchAlgorithmException, NoSuchProviderException);
            static MessageDigest* getInstance(const String& algorithm, const Provider& provider) throw (NoSuchAlgorithmException);

        private:
            MessageDigestSpi* _mspi;
            const Provider*   _prov;
            String            _algo;

        protected:
            MessageDigest(MessageDigestSpi* spi, const Provider* provider, const String& algorithm);

        public:
            virtual ~MessageDigest();

            virtual MessageDigest* clone() const throw (CloneNotSupportedException);

            const bytearray& digest();
            const bytearray& digest(const bytearray& b);
            int digest(byte* data, int offset, int length) throw (ShortBufferException);
            int getDigestLength();
            void reset();
            void update(byte b);
            void update(const byte* data, int offset, int length);
            void update(const bytearray& b);

            const String& getAlgorithm() const throw ();
            const Provider& getProvider() const throw ();
        };
    }
}

#endif

#endif