aes.cpp File Reference

#include <stdlib.h>
#include <stdint.h>
#include "aes.h"

Macros
#define	USE_TABLES
#define	VERSION_1
#define	WPOLY   0x011b
#define	BPOLY   0x1b
#define	DPOLY   0x008d
#define	f1(x)   (x)
#define	f2(x)   ((x << 1) ^ (((x >> 7) & 1) * WPOLY))
#define	f4(x)   ((x << 2) ^ (((x >> 6) & 1) * WPOLY) ^ (((x >> 6) & 2) * WPOLY))
#define	f8(x)   ((x << 3) ^ (((x >> 5) & 1) * WPOLY) ^ (((x >> 5) & 2) * WPOLY) ^ (((x >> 5) & 4) * WPOLY))
#define	d2(x)   (((x) >> 1) ^ ((x)&1 ? DPOLY : 0))
#define	f3(x)   (f2(x) ^ x)
#define	f9(x)   (f8(x) ^ x)
#define	fb(x)   (f8(x) ^ f2(x) ^ x)
#define	fd(x)   (f8(x) ^ f4(x) ^ x)
#define	fe(x)   (f8(x) ^ f4(x) ^ f2(x))
#define	sb_data(w)
#define	isb_data(w)
#define	mm_data(w)
#define	s_box(x)   sbox[(x)]
#define	gfm2_sb(x)   gfm2_sbox[(x)]
#define	gfm3_sb(x)   gfm3_sbox[(x)]
#define	block_copy_nn(d, s, l)   copy_block_nn(d, s, l)
#define	block_copy(d, s)   copy_block(d, s)

Functions
static void	copy_block (void *d, const void *s)
static void	copy_block_nn (uint8_t *d, const uint8_t *s, uint8_t nn)
static void	xor_block (void *d, const void *s)
static void	copy_and_key (void *d, const void *s, const void *k)
static void	add_round_key (uint8_t d[N_BLOCK], const uint8_t k[N_BLOCK])
static void	shift_sub_rows (uint8_t st[N_BLOCK])
static void	mix_sub_columns (uint8_t dt[N_BLOCK])
return_type	lora_aes_set_key (const uint8_t key[], length_type keylen, lora_aes_context ctx[1])
return_type	lora_aes_encrypt (const uint8_t in[N_BLOCK], uint8_t out[N_BLOCK], const lora_aes_context ctx[1])
return_type	lora_aes_cbc_encrypt (const uint8_t *in, uint8_t *out, int32_t n_block, uint8_t iv[N_BLOCK], const lora_aes_context ctx[1])

Variables
static const uint8_t	sbox [256] = sb_data(f1)
static const uint8_t	gfm2_sbox [256] = sb_data(f2)
static const uint8_t	gfm3_sbox [256] = sb_data(f3)

Macro Definition Documentation

USE_TABLES

#define USE_TABLES

VERSION_1

#define VERSION_1

WPOLY

#define WPOLY   0x011b

BPOLY

#define BPOLY   0x1b

DPOLY

#define DPOLY   0x008d

f1

#define f1

(

x

)

(x)

f2

#define f2

(

x

)

((x << 1) ^ (((x >> 7) & 1) * WPOLY))

f4

#define f4

(

x

)

((x << 2) ^ (((x >> 6) & 1) * WPOLY) ^ (((x >> 6) & 2) * WPOLY))

f8

#define f8

(

x

)

((x << 3) ^ (((x >> 5) & 1) * WPOLY) ^ (((x >> 5) & 2) * WPOLY) ^ (((x >> 5) & 4) * WPOLY))

d2

#define d2

(

x

)

(((x) >> 1) ^ ((x)&1 ? DPOLY : 0))

f3

#define f3

(

x

)

(f2(x) ^ x)

f9

#define f9

(

x

)

(f8(x) ^ x)

fb

#define fb

(

x

)

(f8(x) ^ f2(x) ^ x)

fd

#define fd

(

x

)

(f8(x) ^ f4(x) ^ x)

fe

#define fe

(

x

)

(f8(x) ^ f4(x) ^ f2(x))

sb_data

#define sb_data

(

w

)

isb_data

#define isb_data

(

w

)

mm_data

#define mm_data

(

w

)

s_box

#define s_box

(

x

)

sbox[(x)]

gfm2_sb

#define gfm2_sb

(

x

)

gfm2_sbox[(x)]

gfm3_sb

#define gfm3_sb

(

x

)

gfm3_sbox[(x)]

block_copy_nn

#define block_copy_nn	(		d,
			s,
			l
	)		copy_block_nn(d, s, l)

block_copy

#define block_copy	(		d,
			s
	)		copy_block(d, s)

Function Documentation

copy_block()

static void copy_block ( void *  d, const void *  s  )

static

copy_block_nn()

static void copy_block_nn ( uint8_t *  d, const uint8_t *  s, uint8_t  nn  )

static

xor_block()

static void xor_block ( void *  d, const void *  s  )

static

copy_and_key()

static void copy_and_key ( void *  d, const void *  s, const void *  k  )

static

add_round_key()

static void add_round_key ( uint8_t  d[N_BLOCK], const uint8_t  k[N_BLOCK]  )

static

shift_sub_rows()

static void shift_sub_rows ( uint8_t  st[N_BLOCK] )

static

mix_sub_columns()

static void mix_sub_columns ( uint8_t  dt[N_BLOCK] )

static

lora_aes_set_key()

return_type lora_aes_set_key	(	const uint8_t	key[],
		length_type	keylen,
		lora_aes_context	ctx[1]
	)

lora_aes_encrypt()

return_type lora_aes_encrypt	(	const uint8_t	in[N_BLOCK],
		uint8_t	out[N_BLOCK],
		const lora_aes_context	ctx[1]
	)

lora_aes_cbc_encrypt()

return_type lora_aes_cbc_encrypt	(	const uint8_t *	in,
		uint8_t *	out,
		int32_t	n_block,
		uint8_t	iv[N_BLOCK],
		const lora_aes_context	ctx[1]
	)

Variable Documentation

sbox

const uint8_t sbox[256] = sb_data(f1)

static

gfm2_sbox

const uint8_t gfm2_sbox[256] = sb_data(f2)

static

gfm3_sbox

const uint8_t gfm3_sbox[256] = sb_data(f3)

static