// 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_
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 */
#define LITTLE_ENDIAN
class AES
{
public:
virtual void set_key(const u1byte key[], const u4byte key_bits) = 0;
virtual void encrypt(const u1byte in_blk[16], u1byte out_blk[16]) = 0;
virtual void decrypt(const u1byte in_blk[16], u1byte out_blk[16]) = 0;
};
/* 3. Basic macros for speeding up generic operations */
/* Circular rotate of 32 bit values */
#ifdef _MSC_VER
# include <stdlib.h>
# pragma intrinsic(_lrotr,_lrotl)
# define rotr(x,n) _lrotr(x,n)
# define rotl(x,n) _lrotl(x,n)
#else
#define rotr(x,n) (((x) >> ((int)(n))) | ((x) << (32 - (int)(n))))
#define rotl(x,n) (((x) << ((int)(n))) | ((x) >> (32 - (int)(n))))
#endif
/* Invert byte order in a 32 bit variable */
#define bswap(x) (rotl(x, 8) & 0x00ff00ff | rotr(x, 8) & 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_)
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