aescrypt.c File Reference

This file contains the code for implementing encryption and decryption for AES (Rijndael) for block and key sizes of 16, 24 and 32 bytes. It can optionally be replaced by code written in assembler using NASM. For further details see the file aesopt.h. More...

#include "aesopt.h"

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

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Detailed Description

This file contains the code for implementing encryption and decryption for AES (Rijndael) for block and key sizes of 16, 24 and 32 bytes. It can optionally be replaced by code written in assembler using NASM. For further details see the file aesopt.h.

Author:

Dr Brian Gladman <brg@gladman.me.uk>

Definition in file aescrypt.c.

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Define Documentation

#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);

Definition at line 61 of file aescrypt.c.

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

Definition at line 56 of file aescrypt.c.

Referenced by local_alloc(), local_hangup(), locals_show(), and unload_module().

#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)

Definition at line 65 of file aescrypt.c.

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

Definition at line 52 of file aescrypt.c.

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

Definition at line 53 of file aescrypt.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)

Definition at line 63 of file aescrypt.c.

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

Definition at line 64 of file aescrypt.c.