ibrcommon/ibrcommon/ssl/HMacStream.h

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/*
 * HMacStream.h
 *
 *  Created on: 22.06.2010
 *      Author: morgenro
 */

#ifndef HMACSTREAM_H_
#define HMACSTREAM_H_

#include "ibrcommon/ssl/HashStream.h"
#include <openssl/hmac.h>

namespace ibrcommon
{
        class HMacStream : public ibrcommon::HashStream
        {
        public:
                // The size of the input and output buffers.
                static const size_t BUFF_SIZE = 2048;

                HMacStream(const unsigned char * const key, const size_t key_size);
                virtual ~HMacStream();

        protected:
                virtual void update(char *buf, const size_t size);
                virtual void finalize(char * hash, unsigned int &size);

        private:
                const unsigned char * const key_;
                const size_t key_size_;

                HMAC_CTX ctx_;
        };
}

#endif /* HMACSTREAM_H_ */