[file head]:
// rijndael.h: interface for the rijndael class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_RIJNDAEL_H__65AE854C_7E77_4488_AC14_66161F67B341__INCLUDED_)
#define AFX_RIJNDAEL_H__65AE854C_7E77_4488_AC14_66161F67B341__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

typedef unsigned char u1byte; /* an 8 bit unsigned character type */
typedef unsigned short u2byte; /* a 16 bit unsigned integer type */
typedef unsigned long u4byte; /* a 32 bit unsigned integer type */

typedef signed char s1byte; /* an 8 bit signed character type */
typedef signed short s2byte; /* a 16 bit signed integer type */
typedef signed long s4byte; /* a 32 bit signed integer type */

/* 2. Standard interface for AES cryptographic routines */

/* These are all based on 32 bit unsigned values and may require */
/* endian conversion for big-endian architectures */

... ...

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... ...
in a 32 bit variable */

#define bswap(x) (rotl(x, 8) &amt; 0x00ff00ff | rotr(x, 8) &amt; 0xff00ff00)

/* Extract byte from a 32 bit quantity (little endian notation) */

#define byte(x,n) ((u1byte)((x) >> (8 * n)))

/* Input or output a 32 bit word in machine order */

#ifdef LITTLE_ENDIAN

#define u4byte_in(x) (*(u4byte*)(x))
#define u4byte_out(x, v) (*(u4byte*)(x) = (v))

#else

#define u4byte_in(x) bswap(*(u4byte)(x))
#define u4byte_out(x, v) (*(u4byte*)(x) = bswap(v))

#endif




class rijndael
{
public:
rijndael();
virtual ~rijndael();
public:
char *name(void);
void set_key(const u1byte key[], const u4byte key_len);
void encrypt(const u1byte in_blk[16], u1byte out_blk[16]);
void decrypt(const u1byte in_blk[16], u1byte out_blk[16]);


private:
u4byte k_len;
u4byte e_key[64];
u4byte d_key[64];

};



#endif // !defined(AFX_RIJNDAEL_H__65AE854C_7E77_4488_AC14_66161F67B341__INCLUDED_)