AES.c File Reference

Macros
#define	byte3(x)   (x & 0xff) /*Primo byte di dx*/
#define	byte2(x)   ((x >> 8) & 0xff) /*Secondo byte da dx*/
#define	byte1(x)   ((x >> 16) & 0xff) /*Secondo byte da sx*/
#define	byte0(x)   (x >> 24) /*il byte più significativo*/
#define	WORD8_TO_WORD32(b0, b1, b2, b3)   ((WORD32)(b0) << 24 | (WORD32)(b1) << 16 | (WORD32)(b2) << 8 | (b3))
#define	Xtime(x)   ((((x) & 0x7f7f7f7f) << 1) ^ ((((x) & 0x80808080) >> 7) * 0x0000001b))

Typedefs
typedef unsigned char	WORD8
typedef unsigned int	WORD32

Functions
void	keyschedule (WORD32 *key, WORD32 *exp)
void	encryptblock (WORD32 *input_pointer, WORD32 *output_pointer, WORD32 *expkey)
void	decryptblock (WORD32 *input_pointer, WORD32 *output_pointer, WORD32 *expkey)
int	main ()

Macro Definition Documentation

#define byte0

(

x

)

(x >> 24) /*il byte più significativo*/

Referenced by decryptblock(), and encryptblock().

#define byte1

(

x

)

((x >> 16) & 0xff) /*Secondo byte da sx*/

Referenced by decryptblock(), and encryptblock().

#define byte2

(

x

)

((x >> 8) & 0xff) /*Secondo byte da dx*/

Referenced by decryptblock(), and encryptblock().

#define byte3

(

x

)

(x & 0xff) /*Primo byte di dx*/

Referenced by decryptblock(), encryptblock(), and keyschedule().

#define WORD8_TO_WORD32	(		b0,
			b1,
			b2,
			b3
	)		((WORD32)(b0) << 24 | (WORD32)(b1) << 16 | (WORD32)(b2) << 8 | (b3))

Referenced by decryptblock(), and encryptblock().

#define Xtime

(

x

)

((((x) & 0x7f7f7f7f) << 1) ^ ((((x) & 0x80808080) >> 7) * 0x0000001b))

Referenced by decryptblock(), and encryptblock().

Typedef Documentation

typedef unsigned int WORD32

typedef unsigned char WORD8

Function Documentation

void decryptblock	(	WORD32 *	input_pointer,
		WORD32 *	output_pointer,
		WORD32 *	expkey
	)

References byte0, byte1, byte2, byte3, r, s1, s3, WORD8_TO_WORD32, and Xtime.

void encryptblock	(	WORD32 *	input_pointer,
		WORD32 *	output_pointer,
		WORD32 *	expkey
	)

References byte0, byte1, byte2, byte3, r, s1, s3, WORD8_TO_WORD32, and Xtime.

void keyschedule	(	WORD32 *	key,
		WORD32 *	exp
	)

References byte3, and i.

int main

(

void

)

References decryptblock(), encryptblock(), i, and keyschedule().

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