aescpp.h

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/*
 -------------------------------------------------------------------------
 Copyright (c) 2001, Dr Brian Gladman <[e-mail]>, Worcester, UK.
 All rights reserved.

 TERMS

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  1. Redistributions of source code must retain the above copyright 
     notice, this list of conditions and the following disclaimer. 

  2. Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in the 
     documentation and/or other materials provided with the distribution. 

  3. The copyright holder's name must not be used to endorse or promote 
     any products derived from this software without his specific prior 
     written permission. 

 This software is provided 'as is' with no express or implied warranties 
 of correctness or fitness for purpose.
 -------------------------------------------------------------------------
 Issue Date: 21/01/2002

 This file contains the definitions required to use AES (Rijndael) in C++.
*/

#ifndef _AESCPP_H
#define _AESCPP_H

#include "aes.h"

class AESclass
{   aes_ctx cx[1];
public:
#if defined(BLOCK_SIZE)
    AESclass()                          { cx->n_blk = BLOCK_SIZE; cx->n_rnd = 0; }
#else
    AESclass(unsigned int blen = 16)    { cx->n_blk = blen; cx->n_rnd = 0; }
    aes_rval blk_len(unsigned int blen) { return aes_blk_len(blen, cx); }
#endif
    aes_rval enc_key(const unsigned char in_key[], unsigned int klen)
            { return aes_enc_key(in_key, klen, cx); }
    aes_rval dec_key(const unsigned char in_key[], unsigned int klen)
            { return aes_dec_key(in_key, klen, cx); }
    aes_rval enc_blk(const unsigned char in_blk[], unsigned char out_blk[])
            { return aes_enc_blk(in_blk, out_blk, cx); }
    aes_rval dec_blk(const unsigned char in_blk[], unsigned char out_blk[])
            { return aes_dec_blk(in_blk, out_blk, cx); }
};

#endif