rijndael-alg-fst.c File Reference

#include <assert.h>
#include <stdlib.h>
#include "rijndael-alg-fst.h"

Include dependency graph for rijndael-alg-fst.c:

Macros
#define	ROTL(x, n)   (((x) << (n)) | ((x) >> (32 - (n))))
#define	ROTR(x, n)   (((x) >> (n)) | ((x) << (32 - (n))))
#define	BYTESWAP(x)
#define	GETU32(p)   BYTESWAP(*((u32 *)(p)))
#define	PUTU32(ct, st)   { *((u32 *)(ct)) = BYTESWAP(st); }

Functions
int	rijndaelKeySetupEnc (u32 rk[], const u8 cipherKey[], int keyBits)
int	rijndaelKeySetupDec (u32 rk[], const u8 cipherKey[], int keyBits)
void	rijndaelEncrypt (const u32 rk[], int Nr, const u8 pt[16], u8 ct[16])
void	rijndaelDecrypt (const u32 rk[], int Nr, const u8 ct[16], u8 pt[16])

Macro Definition Documentation

BYTESWAP

#define BYTESWAP

(

x

)

Value:

             ((ROTR((x), 8) & 0xff00ff00L) | \
             (ROTL((x), 8) & 0x00ff00ffL))

GETU32

#define GETU32

(

p

)

BYTESWAP(*((u32 *)(p)))

PUTU32

#define PUTU32	(		ct,
			st
	)		{ *((u32 *)(ct)) = BYTESWAP(st); }

ROTL

#define ROTL	(		x,
			n
	)		(((x) << (n)) | ((x) >> (32 - (n))))

ROTR

#define ROTR	(		x,
			n
	)		(((x) >> (n)) | ((x) << (32 - (n))))

Function Documentation

rijndaelDecrypt()

void rijndaelDecrypt	(	const u32	rk[],
		int	Nr,
		const u8	ct[16],
		u8	pt[16]
	)

rijndaelEncrypt()

void rijndaelEncrypt	(	const u32	rk[],
		int	Nr,
		const u8	pt[16],
		u8	ct[16]
	)

rijndaelKeySetupDec()

int rijndaelKeySetupDec	(	u32	rk[],
		const u8	cipherKey[],
		int	keyBits
	)

Expand the cipher key into the decryption key schedule.

Returns

the number of rounds for the given cipher key size.

rijndaelKeySetupEnc()

int rijndaelKeySetupEnc	(	u32	rk[],
		const u8	cipherKey[],
		int	keyBits
	)

Expand the cipher key into the encryption key schedule.

Returns

the number of rounds for the given cipher key size.