/ray/src/lib/crypto/shashbase.h

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/*
 * lib/crypto/shashbase.h
 * 
 * Include header for (mostly cryptographic) hash algorithm base class. 
 * 
 * Copyright (c) 2001--2004 by Wolfgang Wieser ] wwieser (a) gmx <*> de [ 
 * 
 * This file may be distributed and/or modified under the terms of the 
 * GNU General Public License version 2 as published by the Free Software 
 * Foundation. (See COPYING.GPL for details.)
 * 
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 * 
 */

#ifndef _LIB_CRYPTO_SecureHashBase_H_
#define _LIB_CRYPTO_SecureHashBase_H_ 1

#include <lib/sconfig.h>    /* MUST be first */


class SecureHashBase
{
    public:
        struct Parameters
        {
            size_t hash_size;    
            size_t block_size;   
            int hash_ID;         
            const char *name;    
        };
        
    public:
        static const Parameters par;
    
    protected:
        uint64 length;    
        
    private:
        SecureHashBase(const SecureHashBase &);
        void operator=(const SecureHashBase &);
    public:
        SecureHashBase() : length(0)  { }
        virtual ~SecureHashBase()  { }
        
        virtual const Parameters *GetPar() const
            {  return(&SecureHashBase::par);  }
        
        virtual uint64 FedBytes() const;
        
        virtual void reset();
        
        virtual void feed(const char *buf,size_t len);
        
        virtual void final();
        
        virtual void GetHash(char *buf) const;
};

#endif  /* _LIB_CRYPTO_SecureHashBase_H_ */

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