/ray/src/lib/crypto/bcipherbase.h

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/*
 * lib/crypto/bcipherbase.h
 * 
 * Include header for a cryptographic block cipher 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_BlockCipherBase_H_
#define _LIB_CRYPTO_BlockCipherBase_H_ 1

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


class BlockCipherBase
{
    public:
        struct Parameters
        {
            size_t block_size;   
            int n_key_lengths;   


            const size_t *key_length;
            int cipher_ID;       
            const char *name;    
        };
        
    public:
        static const Parameters par;
        
    private:
        BlockCipherBase(const BlockCipherBase &);
        void operator=(const BlockCipherBase &);
    public:
        BlockCipherBase()  { }
        virtual ~BlockCipherBase()  { }
        
        virtual const Parameters *GetPar() const
            {  return(&BlockCipherBase::par);  }
        
        virtual int SetKey(char *key,size_t len);
        
        virtual int CheckWeakKey();
        

        virtual void EncryptBlock(char *ibuf,char *obuf);
        virtual void DecryptBlock(char *ibuf,char *obuf);
        
        virtual int CopyFrom(BlockCipherBase *bcb);
};

#endif  /* _LIB_CRYPTO_BlockCipherBase_H_ */

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