aescrypt.c File Reference

#include "aesopt.h"
#include "aestab.h"

Include dependency graph for aescrypt.c:

Macros
#define	aes_xi(x)   aes_ ## x
#define	si(y, x, k, c)   (s(y,c) = word_in(x, c) ^ (k)[c])
#define	so(y, x, c)   word_out(y, c, s(x,c))
#define	locals(y, x)   x[4],y[4]
#define	l_copy(y, x)
#define	state_in(y, x, k)   si(y,x,k,0); si(y,x,k,1); si(y,x,k,2); si(y,x,k,3)
#define	state_out(y, x)   so(y,x,0); so(y,x,1); so(y,x,2); so(y,x,3)
#define	round(rm, y, x, k)   rm(y,x,k,0); rm(y,x,k,1); rm(y,x,k,2); rm(y,x,k,3)
#define	fwd_var(x, r, c)
#define	fwd_rnd(y, x, k, c)   (s(y,c) = (k)[c] ^ four_tables(x,t_use(f,n),fwd_var,rf1,c))
#define	fwd_lrnd(y, x, k, c)   (s(y,c) = (k)[c] ^ four_tables(x,t_use(f,l),fwd_var,rf1,c))
#define	inv_var(x, r, c)
#define	inv_rnd(y, x, k, c)   (s(y,c) = (k)[c] ^ four_tables(x,t_use(i,n),inv_var,rf1,c))
#define	inv_lrnd(y, x, k, c)   (s(y,c) = (k)[c] ^ four_tables(x,t_use(i,l),inv_var,rf1,c))
#define	key_ofs   0
#define	rnd_key(n)   (kp + n * N_COLS)

Functions
AES_RETURN aes_xi()	encrypt (const unsigned char *in, unsigned char *out, const aes_encrypt_ctx cx[1])
AES_RETURN aes_xi()	decrypt (const unsigned char *in, unsigned char *out, const aes_decrypt_ctx cx[1])

Macro Definition Documentation

#define aes_xi

(

x

)

aes_ ## x

#define fwd_lrnd	(		y,
			x,
			k,
			c
	)		(s(y,c) = (k)[c] ^ four_tables(x,t_use(f,l),fwd_var,rf1,c))

#define fwd_rnd	(		y,
			x,
			k,
			c
	)		(s(y,c) = (k)[c] ^ four_tables(x,t_use(f,n),fwd_var,rf1,c))

#define fwd_var	(		x,
			r,
			c
	)

Value:

( r == 0 ? ( c == 0 ? s(x,0) : c == 1 ? s(x,1) : c == 2 ? s(x,2) : s(x,3))\
 : r == 1 ? ( c == 0 ? s(x,1) : c == 1 ? s(x,2) : c == 2 ? s(x,3) : s(x,0))\
 : r == 2 ? ( c == 0 ? s(x,2) : c == 1 ? s(x,3) : c == 2 ? s(x,0) : s(x,1))\
 :          ( c == 0 ? s(x,3) : c == 1 ? s(x,0) : c == 2 ? s(x,1) : s(x,2)))

#define inv_lrnd	(		y,
			x,
			k,
			c
	)		(s(y,c) = (k)[c] ^ four_tables(x,t_use(i,l),inv_var,rf1,c))

#define inv_rnd	(		y,
			x,
			k,
			c
	)		(s(y,c) = (k)[c] ^ four_tables(x,t_use(i,n),inv_var,rf1,c))

#define inv_var	(		x,
			r,
			c
	)

Value:

( r == 0 ? ( c == 0 ? s(x,0) : c == 1 ? s(x,1) : c == 2 ? s(x,2) : s(x,3))\
 : r == 1 ? ( c == 0 ? s(x,3) : c == 1 ? s(x,0) : c == 2 ? s(x,1) : s(x,2))\
 : r == 2 ? ( c == 0 ? s(x,2) : c == 1 ? s(x,3) : c == 2 ? s(x,0) : s(x,1))\
 :          ( c == 0 ? s(x,1) : c == 1 ? s(x,2) : c == 2 ? s(x,3) : s(x,0)))

#define key_ofs   0

#define l_copy	(		y,
			x
	)

Value:

s(y,0) = s(x,0); s(y,1) = s(x,1); \
                        s(y,2) = s(x,2); s(y,3) = s(x,3);

#define locals	(		y,
			x
	)		x[4],y[4]

#define rnd_key

(

n

)

(kp + n * N_COLS)

#define round	(		rm,
			y,
			x,
			k
	)		rm(y,x,k,0); rm(y,x,k,1); rm(y,x,k,2); rm(y,x,k,3)

#define si	(		y,
			x,
			k,
			c
	)		(s(y,c) = word_in(x, c) ^ (k)[c])

#define so	(		y,
			x,
			c
	)		word_out(y, c, s(x,c))

#define state_in	(		y,
			x,
			k
	)		si(y,x,k,0); si(y,x,k,1); si(y,x,k,2); si(y,x,k,3)

#define state_out	(		y,
			x
	)		so(y,x,0); so(y,x,1); so(y,x,2); so(y,x,3)

Function Documentation

AES_RETURN aes_xi() decrypt	(	const unsigned char *	in,
		unsigned char *	out,
		const aes_decrypt_ctx	cx[1]
	)

AES_RETURN aes_xi() encrypt	(	const unsigned char *	in,
		unsigned char *	out,
		const aes_encrypt_ctx	cx[1]
	)