aes.c

/*
 *  Copyright (C) 2022 - This file is part of libdrbg project
 *
 *  Author:       Ryad BENADJILA <ryad.benadjila@ssi.gouv.fr>
 *  Contributor:  Arnaud EBALARD <arnaud.ebalard@ssi.gouv.fr>
 *
 *  This software is licensed under a dual BSD and GPL v2 license.
 *  See LICENSE file at the root folder of the project.
 */

#ifdef WITH_BC_AES
#include "aes.h"

#ifndef USED_ATTR
#define USED_ATTR __attribute__((used))
#endif

#if defined(SIMPLE_AES) || defined(TABLE_AES)
/**** Common helpers ************/
/* Memcpy helper */
USED_ATTR static inline void local_copy(void *dst, const void *src, uint32_t n)
{
	const uint8_t *lsrc = (const uint8_t*)src;
	uint8_t *ldst = (uint8_t*)dst;
	uint32_t i;

	for (i = 0; i < n; i++) {
		*ldst = *lsrc;
		ldst++;
		lsrc++;
	}
}
/* Memset helper */
USED_ATTR static inline void local_set(void *dst, uint8_t val, uint32_t n)
{
	uint8_t *ldst = (uint8_t*)dst;
	uint32_t i;

	for (i = 0; i < n; i++) {
		*ldst = val;
		ldst++;
	}
}

/* S-Box */
static const uint8_t sbox[256] = {
     0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
     0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
     0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
     0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
     0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
     0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
     0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
     0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
     0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
     0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
     0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
     0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
     0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
     0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
     0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
     0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
};

/* Inverse S-Box */
static const uint8_t inv_sbox[256] = {
     0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
     0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
     0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
     0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
     0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
     0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
     0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
     0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
     0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
     0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
     0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
     0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
     0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
     0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
     0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
     0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
};
#endif

#ifdef SIMPLE_AES
/* Non-tabulated and simple AES */

/* This is a very straightforward and basic implementation of AES (128, 192 and 256) */

static const uint8_t rcon[256] = {
    0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a,
    0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39,
    0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a,
    0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8,
    0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef,
    0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc,
    0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b,
    0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3,
    0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94,
    0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20,
    0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35,
    0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd, 0x61, 0xc2, 0x9f,
    0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d, 0x01, 0x02, 0x04,
    0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63,
    0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3, 0x7d, 0xfa, 0xef, 0xc5, 0x91, 0x39, 0x72, 0xe4, 0xd3, 0xbd,
    0x61, 0xc2, 0x9f, 0x25, 0x4a, 0x94, 0x33, 0x66, 0xcc, 0x83, 0x1d, 0x3a, 0x74, 0xe8, 0xcb, 0x8d
};

/* AES primitives *******************************************************/
/************************************************************************/
/* Multiplication over Galois field */
#define xtime(x) ((uint8_t)(((x)<<1) ^ ((((x)>>7) & 1) * 0x1b)))
static inline uint8_t gmul(uint8_t x, uint8_t y){
	return ((uint8_t)(((y & 1) * x) ^ (((y>>1) & 1) * xtime(x)) ^ (((y>>2) & 1) * xtime(xtime(x))) ^ (((y>>3) & 1) * xtime(xtime(xtime(x)))) ^ (((y>>4) & 1) * xtime(xtime(xtime(xtime(x))))))) & 0xff;
}

static inline void add_rkey(uint8_t *state, const uint8_t *rkey){
	uint32_t i;
	for(i = 0; i < 16; i++){
		state[i] ^= rkey[i];
	}
}

static inline void sub_bytes_sr(uint8_t *state, uint8_t dir){
	uint8_t s[16];
	local_copy(s, state, 16);
	if(dir == AES_ENC){
		/* Subbytes then Shiftrows */
		state[0]  = sbox[s[0]];
		state[1]  = sbox[s[5]];
		state[2]  = sbox[s[10]];
		state[3]  = sbox[s[15]];
		/**/
		state[4]  = sbox[s[4]];
		state[5]  = sbox[s[9]];
		state[6]  = sbox[s[14]];
		state[7]  = sbox[s[3]];
		/**/
		state[8]  = sbox[s[8]];
		state[9]  = sbox[s[13]];
		state[10] = sbox[s[2]];
		state[11] = sbox[s[7]];
		/**/
		state[12] = sbox[s[12]];
		state[13] = sbox[s[1]];
		state[14] = sbox[s[6]];
		state[15] = sbox[s[11]];
	}
	else{
		/* Shiftrows then InvSubbytes */
		state[0]  = inv_sbox[s[0]];
		state[5]  = inv_sbox[s[1]];
		state[10] = inv_sbox[s[2]];
		state[15] = inv_sbox[s[3]];
		/**/
		state[4]  = inv_sbox[s[4]];
		state[9]  = inv_sbox[s[5]];
		state[14] = inv_sbox[s[6]];
		state[3]  = inv_sbox[s[7]];
		/**/
		state[8]  = inv_sbox[s[8]];
		state[13] = inv_sbox[s[9]];
		state[2]  = inv_sbox[s[10]];
		state[7]  = inv_sbox[s[11]];
		/**/
		state[12] = inv_sbox[s[12]];
		state[1]  = inv_sbox[s[13]];
		state[6]  = inv_sbox[s[14]];
		state[11] = inv_sbox[s[15]];
	}
}



static const uint8_t mixcol_matrix[4]    = { 2, 1, 1, 3 };
static const uint8_t invmixcol_matrix[4] = { 14, 9, 13, 11 };

#define MC_UNROLLED
static inline void mix_columns(uint8_t *state, uint8_t dir){
	const uint8_t *matrix;
	uint8_t s[16];

	if(dir == AES_ENC){
		matrix = mixcol_matrix;
	}
	else{
		matrix = invmixcol_matrix;
	}
	local_copy(s, state, 16);
#ifndef MC_UNROLLED
	uint32_t i, base;
	for(i = 0; i < 4; i++){
		base = 4 * i;
		state[base+0]  = gmul(s[base+0], matrix[0]) ^ gmul(s[base+3], matrix[1]) ^ gmul(s[base+2], matrix[2]) ^ gmul(s[base+1], matrix[3]);
		state[base+1]  = gmul(s[base+1], matrix[0]) ^ gmul(s[base+0], matrix[1]) ^ gmul(s[base+3], matrix[2]) ^ gmul(s[base+2], matrix[3]);
		state[base+2]  = gmul(s[base+2], matrix[0]) ^ gmul(s[base+1], matrix[1]) ^ gmul(s[base+0], matrix[2]) ^ gmul(s[base+3], matrix[3]);
		state[base+3]  = gmul(s[base+3], matrix[0]) ^ gmul(s[base+2], matrix[1]) ^ gmul(s[base+1], matrix[2]) ^ gmul(s[base+0], matrix[3]);
	}
#else
	state[0]  = gmul(s[0], matrix[0]) ^ gmul(s[3], matrix[1]) ^ gmul(s[2], matrix[2]) ^ gmul(s[1], matrix[3]);
	state[1]  = gmul(s[1], matrix[0]) ^ gmul(s[0], matrix[1]) ^ gmul(s[3], matrix[2]) ^ gmul(s[2], matrix[3]);
	state[2]  = gmul(s[2], matrix[0]) ^ gmul(s[1], matrix[1]) ^ gmul(s[0], matrix[2]) ^ gmul(s[3], matrix[3]);
	state[3]  = gmul(s[3], matrix[0]) ^ gmul(s[2], matrix[1]) ^ gmul(s[1], matrix[2]) ^ gmul(s[0], matrix[3]);
	/**/
	state[4]  = gmul(s[4], matrix[0]) ^ gmul(s[7], matrix[1]) ^ gmul(s[6], matrix[2]) ^ gmul(s[5], matrix[3]);
	state[5]  = gmul(s[5], matrix[0]) ^ gmul(s[4], matrix[1]) ^ gmul(s[7], matrix[2]) ^ gmul(s[6], matrix[3]);
	state[6]  = gmul(s[6], matrix[0]) ^ gmul(s[5], matrix[1]) ^ gmul(s[4], matrix[2]) ^ gmul(s[7], matrix[3]);
	state[7]  = gmul(s[7], matrix[0]) ^ gmul(s[6], matrix[1]) ^ gmul(s[5], matrix[2]) ^ gmul(s[4], matrix[3]);
	/**/
	state[8]  = gmul(s[8], matrix[0]) ^ gmul(s[11], matrix[1]) ^ gmul(s[10], matrix[2]) ^ gmul(s[9], matrix[3]);
	state[9]  = gmul(s[9], matrix[0]) ^ gmul(s[8], matrix[1]) ^ gmul(s[11], matrix[2]) ^ gmul(s[10], matrix[3]);
	state[10] = gmul(s[10], matrix[0]) ^ gmul(s[9], matrix[1]) ^ gmul(s[8], matrix[2]) ^ gmul(s[11], matrix[3]);
	state[11] = gmul(s[11], matrix[0]) ^ gmul(s[10], matrix[1]) ^ gmul(s[9], matrix[2]) ^ gmul(s[8], matrix[3]);
	/**/
	state[12] = gmul(s[12], matrix[0]) ^ gmul(s[15], matrix[1]) ^ gmul(s[14], matrix[2]) ^ gmul(s[13], matrix[3]);
	state[13] = gmul(s[13], matrix[0]) ^ gmul(s[12], matrix[1]) ^ gmul(s[15], matrix[2]) ^ gmul(s[14], matrix[3]);
	state[14] = gmul(s[14], matrix[0]) ^ gmul(s[13], matrix[1]) ^ gmul(s[12], matrix[2]) ^ gmul(s[15], matrix[3]);
	state[15] = gmul(s[15], matrix[0]) ^ gmul(s[14], matrix[1]) ^ gmul(s[13], matrix[2]) ^ gmul(s[12], matrix[3]);
#endif
}

static inline void sched(uint8_t *in, uint8_t n){
	/* Rotate word, apply sbox and rcon */
	uint8_t t = in[0];
	in[0] = sbox[in[1]] ^ rcon[n];
	in[1] = sbox[in[2]];
	in[2] = sbox[in[3]];
	in[3] = sbox[t];

	return;
}

/* Encryption key schedule */
int aes_setkey_enc(aes_core_context *ctx, const uint8_t *key, uint32_t keybits)
{
	uint32_t size = (keybits / 8);
	uint8_t t[4];
	uint8_t n = 1;
	uint32_t keysize = (keybits / 8);
	int ret = -1;

	if((ctx == NULL) || (key == NULL)){
		goto err;
	}
	if(keybits == 128){
		ctx->nr = 10;
	}
	else if(keybits == 192){
		ctx->nr = 12;
	}
	else if(keybits == 256){
		ctx->nr = 14;
	}
	else{
		goto err;
	}
	/* Perform the key schedule */
	local_copy(&ctx->rk, key, keysize);
	while(size < (16*(ctx->nr + 1))){
		local_copy(t, &ctx->rk[size - 4], 4);
		if((size % keysize) == 0) {
			sched(t, n);
			n++;
		}
		/* Extra sbox for 256 bit key */
		if((keybits == 256) && ((size % keysize) == 16)){
			t[0] = sbox[t[0]]; t[1] = sbox[t[1]];
			t[2] = sbox[t[2]]; t[3] = sbox[t[3]];
		}
		ctx->rk[size]     = ctx->rk[size - keysize]     ^ t[0];
		ctx->rk[size + 1] = ctx->rk[size - keysize + 1] ^ t[1];
		ctx->rk[size + 2] = ctx->rk[size - keysize + 2] ^ t[2];
		ctx->rk[size + 3] = ctx->rk[size - keysize + 3] ^ t[3];
		size += 4;
	}

	ret = 0;

err:
	return ret;
}

/* Encryption primitive */
int aes_enc(aes_core_context *ctx, const uint8_t data_in[16], uint8_t data_out[16])
{
	uint32_t r;
	/* Our local state */
	uint8_t state[16];
	uint8_t dir = AES_ENC;
	int ret = -1;

	if((ctx == NULL) || (data_in == NULL) || (data_out == NULL)){
		goto err;
	}
	/* Sanity check for array access */
	if((16 * (ctx->nr + 1)) > sizeof(ctx->rk)){
		goto err;
	}
	local_copy(state, data_in, 16);

	/* Initial add round key */
	add_rkey(state, &ctx->rk[0]);

	/* All our rounds except the last one */
	for(r = 1; r < ctx->nr; r++){
		sub_bytes_sr(state, dir);
		mix_columns(state, dir);
		add_rkey(state, &ctx->rk[16*r]);
	}
	/* Last round without mixcolumns */
	sub_bytes_sr(state, dir);
	add_rkey(state, &ctx->rk[16*r]);

	/* Copy back state to ciphertext */
	local_copy(data_out, state, 16);

	/* Clean stuff */
	local_set(state, 0, sizeof(state));

	ret = 0;

err:
	return ret;
}

/* Decryption key schedule */
int aes_setkey_dec(aes_core_context *ctx, const uint8_t *key, uint32_t keybits)
{
	/* Encryption and decryption have the same key schedule */
	return aes_setkey_enc(ctx, key, keybits);
}

/* Decryption primitive */
int aes_dec(aes_core_context *ctx, const uint8_t data_in[16], uint8_t data_out[16])
{
	uint32_t r;
	/* Our local state */
	uint8_t state[16];
	uint8_t dir = AES_DEC;
	int ret = -1;

	if((ctx == NULL) || (data_in == NULL) || (data_out == NULL)){
		goto err;
	}
	/* Sanity check for array access */
	if((16 * (ctx->nr + 1)) > sizeof(ctx->rk)){
		goto err;
	}
	local_copy(state, data_in, 16);

	r = ctx->nr;
	/* Initial add round key */
	add_rkey(state, &ctx->rk[16*r]);
	r--;

	/* All our rounds except the last one */
	while(r > 0){
		sub_bytes_sr(state, dir);
		add_rkey(state, &ctx->rk[16*r]);
		mix_columns(state, dir);
		r--;
	}
	/* Last round without mixcolumns */
	sub_bytes_sr(state, dir);
	add_rkey(state, &ctx->rk[0]);

	/* Copy back state to plaintext */
	local_copy(data_out, state, 16);

	/* Clean stuff */
	local_set(state, 0, sizeof(state));

	ret = 0;

err:
	return ret;
}
#endif

#ifdef TABLE_AES
/* Useful macros */
/*
 * 32-bit integer manipulation macros (little endian)
 */
#ifndef GET_UINT32_LE
#define GET_UINT32_LE(n,b,i)                            \
do {                                                    \
    (n) = ( (uint32_t) (b)[(i)    ]       )             \
	| ( (uint32_t) (b)[(i) + 1] <<	8 )		\
	| ( (uint32_t) (b)[(i) + 2] << 16 )		\
	| ( (uint32_t) (b)[(i) + 3] << 24 );		\
} while( 0 )
#endif

#ifndef PUT_UINT32_LE
#define PUT_UINT32_LE(n,b,i)                                    \
do {                                                            \
    (b)[(i)    ] = (uint8_t) ( ( (n)       ) & 0xFF );    \
    (b)[(i) + 1] = (uint8_t) ( ( (n) >>  8 ) & 0xFF );    \
    (b)[(i) + 2] = (uint8_t) ( ( (n) >> 16 ) & 0xFF );    \
    (b)[(i) + 3] = (uint8_t) ( ( (n) >> 24 ) & 0xFF );    \
} while( 0 )
#endif

/* Tabulated AES (use T-tables to be more efficient) */

/* Encryption tables */

static const uint32_t Te0[256] = {
	0xa56363c6, 0x847c7cf8, 0x997777ee, 0x8d7b7bf6,
	0x0df2f2ff, 0xbd6b6bd6, 0xb16f6fde, 0x54c5c591,
	0x50303060, 0x03010102, 0xa96767ce, 0x7d2b2b56,
	0x19fefee7, 0x62d7d7b5, 0xe6abab4d, 0x9a7676ec,
	0x45caca8f, 0x9d82821f, 0x40c9c989, 0x877d7dfa,
	0x15fafaef, 0xeb5959b2, 0xc947478e, 0x0bf0f0fb,
	0xecadad41, 0x67d4d4b3, 0xfda2a25f, 0xeaafaf45,
	0xbf9c9c23, 0xf7a4a453, 0x967272e4, 0x5bc0c09b,
	0xc2b7b775, 0x1cfdfde1, 0xae93933d, 0x6a26264c,
	0x5a36366c, 0x413f3f7e, 0x02f7f7f5, 0x4fcccc83,
	0x5c343468, 0xf4a5a551, 0x34e5e5d1, 0x08f1f1f9,
	0x937171e2, 0x73d8d8ab, 0x53313162, 0x3f15152a,
	0x0c040408, 0x52c7c795, 0x65232346, 0x5ec3c39d,
	0x28181830, 0xa1969637, 0x0f05050a, 0xb59a9a2f,
	0x0907070e, 0x36121224, 0x9b80801b, 0x3de2e2df,
	0x26ebebcd, 0x6927274e, 0xcdb2b27f, 0x9f7575ea,
	0x1b090912, 0x9e83831d, 0x742c2c58, 0x2e1a1a34,
	0x2d1b1b36, 0xb26e6edc, 0xee5a5ab4, 0xfba0a05b,
	0xf65252a4, 0x4d3b3b76, 0x61d6d6b7, 0xceb3b37d,
	0x7b292952, 0x3ee3e3dd, 0x712f2f5e, 0x97848413,
	0xf55353a6, 0x68d1d1b9, 0x00000000, 0x2cededc1,
	0x60202040, 0x1ffcfce3, 0xc8b1b179, 0xed5b5bb6,
	0xbe6a6ad4, 0x46cbcb8d, 0xd9bebe67, 0x4b393972,
	0xde4a4a94, 0xd44c4c98, 0xe85858b0, 0x4acfcf85,
	0x6bd0d0bb, 0x2aefefc5, 0xe5aaaa4f, 0x16fbfbed,
	0xc5434386, 0xd74d4d9a, 0x55333366, 0x94858511,
	0xcf45458a, 0x10f9f9e9, 0x06020204, 0x817f7ffe,
	0xf05050a0, 0x443c3c78, 0xba9f9f25, 0xe3a8a84b,
	0xf35151a2, 0xfea3a35d, 0xc0404080, 0x8a8f8f05,
	0xad92923f, 0xbc9d9d21, 0x48383870, 0x04f5f5f1,
	0xdfbcbc63, 0xc1b6b677, 0x75dadaaf, 0x63212142,
	0x30101020, 0x1affffe5, 0x0ef3f3fd, 0x6dd2d2bf,
	0x4ccdcd81, 0x140c0c18, 0x35131326, 0x2fececc3,
	0xe15f5fbe, 0xa2979735, 0xcc444488, 0x3917172e,
	0x57c4c493, 0xf2a7a755, 0x827e7efc, 0x473d3d7a,
	0xac6464c8, 0xe75d5dba, 0x2b191932, 0x957373e6,
	0xa06060c0, 0x98818119, 0xd14f4f9e, 0x7fdcdca3,
	0x66222244, 0x7e2a2a54, 0xab90903b, 0x8388880b,
	0xca46468c, 0x29eeeec7, 0xd3b8b86b, 0x3c141428,
	0x79dedea7, 0xe25e5ebc, 0x1d0b0b16, 0x76dbdbad,
	0x3be0e0db, 0x56323264, 0x4e3a3a74, 0x1e0a0a14,
	0xdb494992, 0x0a06060c, 0x6c242448, 0xe45c5cb8,
	0x5dc2c29f, 0x6ed3d3bd, 0xefacac43, 0xa66262c4,
	0xa8919139, 0xa4959531, 0x37e4e4d3, 0x8b7979f2,
	0x32e7e7d5, 0x43c8c88b, 0x5937376e, 0xb76d6dda,
	0x8c8d8d01, 0x64d5d5b1, 0xd24e4e9c, 0xe0a9a949,
	0xb46c6cd8, 0xfa5656ac, 0x07f4f4f3, 0x25eaeacf,
	0xaf6565ca, 0x8e7a7af4, 0xe9aeae47, 0x18080810,
	0xd5baba6f, 0x887878f0, 0x6f25254a, 0x722e2e5c,
	0x241c1c38, 0xf1a6a657, 0xc7b4b473, 0x51c6c697,
	0x23e8e8cb, 0x7cdddda1, 0x9c7474e8, 0x211f1f3e,
	0xdd4b4b96, 0xdcbdbd61, 0x868b8b0d, 0x858a8a0f,
	0x907070e0, 0x423e3e7c, 0xc4b5b571, 0xaa6666cc,
	0xd8484890, 0x05030306, 0x01f6f6f7, 0x120e0e1c,
	0xa36161c2, 0x5f35356a, 0xf95757ae, 0xd0b9b969,
	0x91868617, 0x58c1c199, 0x271d1d3a, 0xb99e9e27,
	0x38e1e1d9, 0x13f8f8eb, 0xb398982b, 0x33111122,
	0xbb6969d2, 0x70d9d9a9, 0x898e8e07, 0xa7949433,
	0xb69b9b2d, 0x221e1e3c, 0x92878715, 0x20e9e9c9,
	0x49cece87, 0xff5555aa, 0x78282850, 0x7adfdfa5,
	0x8f8c8c03, 0xf8a1a159, 0x80898909, 0x170d0d1a,
	0xdabfbf65, 0x31e6e6d7, 0xc6424284, 0xb86868d0,
	0xc3414182, 0xb0999929, 0x772d2d5a, 0x110f0f1e,
	0xcbb0b07b, 0xfc5454a8, 0xd6bbbb6d, 0x3a16162c,
};

static const uint32_t Te1[256] = {
	0x6363c6a5, 0x7c7cf884, 0x7777ee99, 0x7b7bf68d,
	0xf2f2ff0d, 0x6b6bd6bd, 0x6f6fdeb1, 0xc5c59154,
	0x30306050, 0x01010203, 0x6767cea9, 0x2b2b567d,
	0xfefee719, 0xd7d7b562, 0xabab4de6, 0x7676ec9a,
	0xcaca8f45, 0x82821f9d, 0xc9c98940, 0x7d7dfa87,
	0xfafaef15, 0x5959b2eb, 0x47478ec9, 0xf0f0fb0b,
	0xadad41ec, 0xd4d4b367, 0xa2a25ffd, 0xafaf45ea,
	0x9c9c23bf, 0xa4a453f7, 0x7272e496, 0xc0c09b5b,
	0xb7b775c2, 0xfdfde11c, 0x93933dae, 0x26264c6a,
	0x36366c5a, 0x3f3f7e41, 0xf7f7f502, 0xcccc834f,
	0x3434685c, 0xa5a551f4, 0xe5e5d134, 0xf1f1f908,
	0x7171e293, 0xd8d8ab73, 0x31316253, 0x15152a3f,
	0x0404080c, 0xc7c79552, 0x23234665, 0xc3c39d5e,
	0x18183028, 0x969637a1, 0x05050a0f, 0x9a9a2fb5,
	0x07070e09, 0x12122436, 0x80801b9b, 0xe2e2df3d,
	0xebebcd26, 0x27274e69, 0xb2b27fcd, 0x7575ea9f,
	0x0909121b, 0x83831d9e, 0x2c2c5874, 0x1a1a342e,
	0x1b1b362d, 0x6e6edcb2, 0x5a5ab4ee, 0xa0a05bfb,
	0x5252a4f6, 0x3b3b764d, 0xd6d6b761, 0xb3b37dce,
	0x2929527b, 0xe3e3dd3e, 0x2f2f5e71, 0x84841397,
	0x5353a6f5, 0xd1d1b968, 0x00000000, 0xededc12c,
	0x20204060, 0xfcfce31f, 0xb1b179c8, 0x5b5bb6ed,
	0x6a6ad4be, 0xcbcb8d46, 0xbebe67d9, 0x3939724b,
	0x4a4a94de, 0x4c4c98d4, 0x5858b0e8, 0xcfcf854a,
	0xd0d0bb6b, 0xefefc52a, 0xaaaa4fe5, 0xfbfbed16,
	0x434386c5, 0x4d4d9ad7, 0x33336655, 0x85851194,
	0x45458acf, 0xf9f9e910, 0x02020406, 0x7f7ffe81,
	0x5050a0f0, 0x3c3c7844, 0x9f9f25ba, 0xa8a84be3,
	0x5151a2f3, 0xa3a35dfe, 0x404080c0, 0x8f8f058a,
	0x92923fad, 0x9d9d21bc, 0x38387048, 0xf5f5f104,
	0xbcbc63df, 0xb6b677c1, 0xdadaaf75, 0x21214263,
	0x10102030, 0xffffe51a, 0xf3f3fd0e, 0xd2d2bf6d,
	0xcdcd814c, 0x0c0c1814, 0x13132635, 0xececc32f,
	0x5f5fbee1, 0x979735a2, 0x444488cc, 0x17172e39,
	0xc4c49357, 0xa7a755f2, 0x7e7efc82, 0x3d3d7a47,
	0x6464c8ac, 0x5d5dbae7, 0x1919322b, 0x7373e695,
	0x6060c0a0, 0x81811998, 0x4f4f9ed1, 0xdcdca37f,
	0x22224466, 0x2a2a547e, 0x90903bab, 0x88880b83,
	0x46468cca, 0xeeeec729, 0xb8b86bd3, 0x1414283c,
	0xdedea779, 0x5e5ebce2, 0x0b0b161d, 0xdbdbad76,
	0xe0e0db3b, 0x32326456, 0x3a3a744e, 0x0a0a141e,
	0x494992db, 0x06060c0a, 0x2424486c, 0x5c5cb8e4,
	0xc2c29f5d, 0xd3d3bd6e, 0xacac43ef, 0x6262c4a6,
	0x919139a8, 0x959531a4, 0xe4e4d337, 0x7979f28b,
	0xe7e7d532, 0xc8c88b43, 0x37376e59, 0x6d6ddab7,
	0x8d8d018c, 0xd5d5b164, 0x4e4e9cd2, 0xa9a949e0,
	0x6c6cd8b4, 0x5656acfa, 0xf4f4f307, 0xeaeacf25,
	0x6565caaf, 0x7a7af48e, 0xaeae47e9, 0x08081018,
	0xbaba6fd5, 0x7878f088, 0x25254a6f, 0x2e2e5c72,
	0x1c1c3824, 0xa6a657f1, 0xb4b473c7, 0xc6c69751,
	0xe8e8cb23, 0xdddda17c, 0x7474e89c, 0x1f1f3e21,
	0x4b4b96dd, 0xbdbd61dc, 0x8b8b0d86, 0x8a8a0f85,
	0x7070e090, 0x3e3e7c42, 0xb5b571c4, 0x6666ccaa,
	0x484890d8, 0x03030605, 0xf6f6f701, 0x0e0e1c12,
	0x6161c2a3, 0x35356a5f, 0x5757aef9, 0xb9b969d0,
	0x86861791, 0xc1c19958, 0x1d1d3a27, 0x9e9e27b9,
	0xe1e1d938, 0xf8f8eb13, 0x98982bb3, 0x11112233,
	0x6969d2bb, 0xd9d9a970, 0x8e8e0789, 0x949433a7,
	0x9b9b2db6, 0x1e1e3c22, 0x87871592, 0xe9e9c920,
	0xcece8749, 0x5555aaff, 0x28285078, 0xdfdfa57a,
	0x8c8c038f, 0xa1a159f8, 0x89890980, 0x0d0d1a17,
	0xbfbf65da, 0xe6e6d731, 0x424284c6, 0x6868d0b8,
	0x414182c3, 0x999929b0, 0x2d2d5a77, 0x0f0f1e11,
	0xb0b07bcb, 0x5454a8fc, 0xbbbb6dd6, 0x16162c3a,
};

static const uint32_t Te2[256] = {
	0x63c6a563, 0x7cf8847c, 0x77ee9977, 0x7bf68d7b,
	0xf2ff0df2, 0x6bd6bd6b, 0x6fdeb16f, 0xc59154c5,
	0x30605030, 0x01020301, 0x67cea967, 0x2b567d2b,
	0xfee719fe, 0xd7b562d7, 0xab4de6ab, 0x76ec9a76,
	0xca8f45ca, 0x821f9d82, 0xc98940c9, 0x7dfa877d,
	0xfaef15fa, 0x59b2eb59, 0x478ec947, 0xf0fb0bf0,
	0xad41ecad, 0xd4b367d4, 0xa25ffda2, 0xaf45eaaf,
	0x9c23bf9c, 0xa453f7a4, 0x72e49672, 0xc09b5bc0,
	0xb775c2b7, 0xfde11cfd, 0x933dae93, 0x264c6a26,
	0x366c5a36, 0x3f7e413f, 0xf7f502f7, 0xcc834fcc,
	0x34685c34, 0xa551f4a5, 0xe5d134e5, 0xf1f908f1,
	0x71e29371, 0xd8ab73d8, 0x31625331, 0x152a3f15,
	0x04080c04, 0xc79552c7, 0x23466523, 0xc39d5ec3,
	0x18302818, 0x9637a196, 0x050a0f05, 0x9a2fb59a,
	0x070e0907, 0x12243612, 0x801b9b80, 0xe2df3de2,
	0xebcd26eb, 0x274e6927, 0xb27fcdb2, 0x75ea9f75,
	0x09121b09, 0x831d9e83, 0x2c58742c, 0x1a342e1a,
	0x1b362d1b, 0x6edcb26e, 0x5ab4ee5a, 0xa05bfba0,
	0x52a4f652, 0x3b764d3b, 0xd6b761d6, 0xb37dceb3,
	0x29527b29, 0xe3dd3ee3, 0x2f5e712f, 0x84139784,
	0x53a6f553, 0xd1b968d1, 0x00000000, 0xedc12ced,
	0x20406020, 0xfce31ffc, 0xb179c8b1, 0x5bb6ed5b,
	0x6ad4be6a, 0xcb8d46cb, 0xbe67d9be, 0x39724b39,
	0x4a94de4a, 0x4c98d44c, 0x58b0e858, 0xcf854acf,
	0xd0bb6bd0, 0xefc52aef, 0xaa4fe5aa, 0xfbed16fb,
	0x4386c543, 0x4d9ad74d, 0x33665533, 0x85119485,
	0x458acf45, 0xf9e910f9, 0x02040602, 0x7ffe817f,
	0x50a0f050, 0x3c78443c, 0x9f25ba9f, 0xa84be3a8,
	0x51a2f351, 0xa35dfea3, 0x4080c040, 0x8f058a8f,
	0x923fad92, 0x9d21bc9d, 0x38704838, 0xf5f104f5,
	0xbc63dfbc, 0xb677c1b6, 0xdaaf75da, 0x21426321,
	0x10203010, 0xffe51aff, 0xf3fd0ef3, 0xd2bf6dd2,
	0xcd814ccd, 0x0c18140c, 0x13263513, 0xecc32fec,
	0x5fbee15f, 0x9735a297, 0x4488cc44, 0x172e3917,
	0xc49357c4, 0xa755f2a7, 0x7efc827e, 0x3d7a473d,
	0x64c8ac64, 0x5dbae75d, 0x19322b19, 0x73e69573,
	0x60c0a060, 0x81199881, 0x4f9ed14f, 0xdca37fdc,
	0x22446622, 0x2a547e2a, 0x903bab90, 0x880b8388,
	0x468cca46, 0xeec729ee, 0xb86bd3b8, 0x14283c14,
	0xdea779de, 0x5ebce25e, 0x0b161d0b, 0xdbad76db,
	0xe0db3be0, 0x32645632, 0x3a744e3a, 0x0a141e0a,
	0x4992db49, 0x060c0a06, 0x24486c24, 0x5cb8e45c,
	0xc29f5dc2, 0xd3bd6ed3, 0xac43efac, 0x62c4a662,
	0x9139a891, 0x9531a495, 0xe4d337e4, 0x79f28b79,
	0xe7d532e7, 0xc88b43c8, 0x376e5937, 0x6ddab76d,
	0x8d018c8d, 0xd5b164d5, 0x4e9cd24e, 0xa949e0a9,
	0x6cd8b46c, 0x56acfa56, 0xf4f307f4, 0xeacf25ea,
	0x65caaf65, 0x7af48e7a, 0xae47e9ae, 0x08101808,
	0xba6fd5ba, 0x78f08878, 0x254a6f25, 0x2e5c722e,
	0x1c38241c, 0xa657f1a6, 0xb473c7b4, 0xc69751c6,
	0xe8cb23e8, 0xdda17cdd, 0x74e89c74, 0x1f3e211f,
	0x4b96dd4b, 0xbd61dcbd, 0x8b0d868b, 0x8a0f858a,
	0x70e09070, 0x3e7c423e, 0xb571c4b5, 0x66ccaa66,
	0x4890d848, 0x03060503, 0xf6f701f6, 0x0e1c120e,
	0x61c2a361, 0x356a5f35, 0x57aef957, 0xb969d0b9,
	0x86179186, 0xc19958c1, 0x1d3a271d, 0x9e27b99e,
	0xe1d938e1, 0xf8eb13f8, 0x982bb398, 0x11223311,
	0x69d2bb69, 0xd9a970d9, 0x8e07898e, 0x9433a794,
	0x9b2db69b, 0x1e3c221e, 0x87159287, 0xe9c920e9,
	0xce8749ce, 0x55aaff55, 0x28507828, 0xdfa57adf,
	0x8c038f8c, 0xa159f8a1, 0x89098089, 0x0d1a170d,
	0xbf65dabf, 0xe6d731e6, 0x4284c642, 0x68d0b868,
	0x4182c341, 0x9929b099, 0x2d5a772d, 0x0f1e110f,
	0xb07bcbb0, 0x54a8fc54, 0xbb6dd6bb, 0x162c3a16,
};

static const uint32_t Te3[256] = {
	0xc6a56363, 0xf8847c7c, 0xee997777, 0xf68d7b7b,
	0xff0df2f2, 0xd6bd6b6b, 0xdeb16f6f, 0x9154c5c5,
	0x60503030, 0x02030101, 0xcea96767, 0x567d2b2b,
	0xe719fefe, 0xb562d7d7, 0x4de6abab, 0xec9a7676,
	0x8f45caca, 0x1f9d8282, 0x8940c9c9, 0xfa877d7d,
	0xef15fafa, 0xb2eb5959, 0x8ec94747, 0xfb0bf0f0,
	0x41ecadad, 0xb367d4d4, 0x5ffda2a2, 0x45eaafaf,
	0x23bf9c9c, 0x53f7a4a4, 0xe4967272, 0x9b5bc0c0,
	0x75c2b7b7, 0xe11cfdfd, 0x3dae9393, 0x4c6a2626,
	0x6c5a3636, 0x7e413f3f, 0xf502f7f7, 0x834fcccc,
	0x685c3434, 0x51f4a5a5, 0xd134e5e5, 0xf908f1f1,
	0xe2937171, 0xab73d8d8, 0x62533131, 0x2a3f1515,
	0x080c0404, 0x9552c7c7, 0x46652323, 0x9d5ec3c3,
	0x30281818, 0x37a19696, 0x0a0f0505, 0x2fb59a9a,
	0x0e090707, 0x24361212, 0x1b9b8080, 0xdf3de2e2,
	0xcd26ebeb, 0x4e692727, 0x7fcdb2b2, 0xea9f7575,
	0x121b0909, 0x1d9e8383, 0x58742c2c, 0x342e1a1a,
	0x362d1b1b, 0xdcb26e6e, 0xb4ee5a5a, 0x5bfba0a0,
	0xa4f65252, 0x764d3b3b, 0xb761d6d6, 0x7dceb3b3,
	0x527b2929, 0xdd3ee3e3, 0x5e712f2f, 0x13978484,
	0xa6f55353, 0xb968d1d1, 0x00000000, 0xc12ceded,
	0x40602020, 0xe31ffcfc, 0x79c8b1b1, 0xb6ed5b5b,
	0xd4be6a6a, 0x8d46cbcb, 0x67d9bebe, 0x724b3939,
	0x94de4a4a, 0x98d44c4c, 0xb0e85858, 0x854acfcf,
	0xbb6bd0d0, 0xc52aefef, 0x4fe5aaaa, 0xed16fbfb,
	0x86c54343, 0x9ad74d4d, 0x66553333, 0x11948585,
	0x8acf4545, 0xe910f9f9, 0x04060202, 0xfe817f7f,
	0xa0f05050, 0x78443c3c, 0x25ba9f9f, 0x4be3a8a8,
	0xa2f35151, 0x5dfea3a3, 0x80c04040, 0x058a8f8f,
	0x3fad9292, 0x21bc9d9d, 0x70483838, 0xf104f5f5,
	0x63dfbcbc, 0x77c1b6b6, 0xaf75dada, 0x42632121,
	0x20301010, 0xe51affff, 0xfd0ef3f3, 0xbf6dd2d2,
	0x814ccdcd, 0x18140c0c, 0x26351313, 0xc32fecec,
	0xbee15f5f, 0x35a29797, 0x88cc4444, 0x2e391717,
	0x9357c4c4, 0x55f2a7a7, 0xfc827e7e, 0x7a473d3d,
	0xc8ac6464, 0xbae75d5d, 0x322b1919, 0xe6957373,
	0xc0a06060, 0x19988181, 0x9ed14f4f, 0xa37fdcdc,
	0x44662222, 0x547e2a2a, 0x3bab9090, 0x0b838888,
	0x8cca4646, 0xc729eeee, 0x6bd3b8b8, 0x283c1414,
	0xa779dede, 0xbce25e5e, 0x161d0b0b, 0xad76dbdb,
	0xdb3be0e0, 0x64563232, 0x744e3a3a, 0x141e0a0a,
	0x92db4949, 0x0c0a0606, 0x486c2424, 0xb8e45c5c,
	0x9f5dc2c2, 0xbd6ed3d3, 0x43efacac, 0xc4a66262,
	0x39a89191, 0x31a49595, 0xd337e4e4, 0xf28b7979,
	0xd532e7e7, 0x8b43c8c8, 0x6e593737, 0xdab76d6d,
	0x018c8d8d, 0xb164d5d5, 0x9cd24e4e, 0x49e0a9a9,
	0xd8b46c6c, 0xacfa5656, 0xf307f4f4, 0xcf25eaea,
	0xcaaf6565, 0xf48e7a7a, 0x47e9aeae, 0x10180808,
	0x6fd5baba, 0xf0887878, 0x4a6f2525, 0x5c722e2e,
	0x38241c1c, 0x57f1a6a6, 0x73c7b4b4, 0x9751c6c6,
	0xcb23e8e8, 0xa17cdddd, 0xe89c7474, 0x3e211f1f,
	0x96dd4b4b, 0x61dcbdbd, 0x0d868b8b, 0x0f858a8a,
	0xe0907070, 0x7c423e3e, 0x71c4b5b5, 0xccaa6666,
	0x90d84848, 0x06050303, 0xf701f6f6, 0x1c120e0e,
	0xc2a36161, 0x6a5f3535, 0xaef95757, 0x69d0b9b9,
	0x17918686, 0x9958c1c1, 0x3a271d1d, 0x27b99e9e,
	0xd938e1e1, 0xeb13f8f8, 0x2bb39898, 0x22331111,
	0xd2bb6969, 0xa970d9d9, 0x07898e8e, 0x33a79494,
	0x2db69b9b, 0x3c221e1e, 0x15928787, 0xc920e9e9,
	0x8749cece, 0xaaff5555, 0x50782828, 0xa57adfdf,
	0x038f8c8c, 0x59f8a1a1, 0x09808989, 0x1a170d0d,
	0x65dabfbf, 0xd731e6e6, 0x84c64242, 0xd0b86868,
	0x82c34141, 0x29b09999, 0x5a772d2d, 0x1e110f0f,
	0x7bcbb0b0, 0xa8fc5454, 0x6dd6bbbb, 0x2c3a1616,
};

/* Decryption tables */
static const uint32_t Td0[256] = {
	0x50a7f451, 0x5365417e, 0xc3a4171a, 0x965e273a,
	0xcb6bab3b, 0xf1459d1f, 0xab58faac, 0x9303e34b,
	0x55fa3020, 0xf66d76ad, 0x9176cc88, 0x254c02f5,
	0xfcd7e54f, 0xd7cb2ac5, 0x80443526, 0x8fa362b5,
	0x495ab1de, 0x671bba25, 0x980eea45, 0xe1c0fe5d,
	0x02752fc3, 0x12f04c81, 0xa397468d, 0xc6f9d36b,
	0xe75f8f03, 0x959c9215, 0xeb7a6dbf, 0xda595295,
	0x2d83bed4, 0xd3217458, 0x2969e049, 0x44c8c98e,
	0x6a89c275, 0x78798ef4, 0x6b3e5899, 0xdd71b927,
	0xb64fe1be, 0x17ad88f0, 0x66ac20c9, 0xb43ace7d,
	0x184adf63, 0x82311ae5, 0x60335197, 0x457f5362,
	0xe07764b1, 0x84ae6bbb, 0x1ca081fe, 0x942b08f9,
	0x58684870, 0x19fd458f, 0x876cde94, 0xb7f87b52,
	0x23d373ab, 0xe2024b72, 0x578f1fe3, 0x2aab5566,
	0x0728ebb2, 0x03c2b52f, 0x9a7bc586, 0xa50837d3,
	0xf2872830, 0xb2a5bf23, 0xba6a0302, 0x5c8216ed,
	0x2b1ccf8a, 0x92b479a7, 0xf0f207f3, 0xa1e2694e,
	0xcdf4da65, 0xd5be0506, 0x1f6234d1, 0x8afea6c4,
	0x9d532e34, 0xa055f3a2, 0x32e18a05, 0x75ebf6a4,
	0x39ec830b, 0xaaef6040, 0x069f715e, 0x51106ebd,
	0xf98a213e, 0x3d06dd96, 0xae053edd, 0x46bde64d,
	0xb58d5491, 0x055dc471, 0x6fd40604, 0xff155060,
	0x24fb9819, 0x97e9bdd6, 0xcc434089, 0x779ed967,
	0xbd42e8b0, 0x888b8907, 0x385b19e7, 0xdbeec879,
	0x470a7ca1, 0xe90f427c, 0xc91e84f8, 0x00000000,
	0x83868009, 0x48ed2b32, 0xac70111e, 0x4e725a6c,
	0xfbff0efd, 0x5638850f, 0x1ed5ae3d, 0x27392d36,
	0x64d90f0a, 0x21a65c68, 0xd1545b9b, 0x3a2e3624,
	0xb1670a0c, 0x0fe75793, 0xd296eeb4, 0x9e919b1b,
	0x4fc5c080, 0xa220dc61, 0x694b775a, 0x161a121c,
	0x0aba93e2, 0xe52aa0c0, 0x43e0223c, 0x1d171b12,
	0x0b0d090e, 0xadc78bf2, 0xb9a8b62d, 0xc8a91e14,
	0x8519f157, 0x4c0775af, 0xbbdd99ee, 0xfd607fa3,
	0x9f2601f7, 0xbcf5725c, 0xc53b6644, 0x347efb5b,
	0x7629438b, 0xdcc623cb, 0x68fcedb6, 0x63f1e4b8,
	0xcadc31d7, 0x10856342, 0x40229713, 0x2011c684,
	0x7d244a85, 0xf83dbbd2, 0x1132f9ae, 0x6da129c7,
	0x4b2f9e1d, 0xf330b2dc, 0xec52860d, 0xd0e3c177,
	0x6c16b32b, 0x99b970a9, 0xfa489411, 0x2264e947,
	0xc48cfca8, 0x1a3ff0a0, 0xd82c7d56, 0xef903322,
	0xc74e4987, 0xc1d138d9, 0xfea2ca8c, 0x360bd498,
	0xcf81f5a6, 0x28de7aa5, 0x268eb7da, 0xa4bfad3f,
	0xe49d3a2c, 0x0d927850, 0x9bcc5f6a, 0x62467e54,
	0xc2138df6, 0xe8b8d890, 0x5ef7392e, 0xf5afc382,
	0xbe805d9f, 0x7c93d069, 0xa92dd56f, 0xb31225cf,
	0x3b99acc8, 0xa77d1810, 0x6e639ce8, 0x7bbb3bdb,
	0x097826cd, 0xf418596e, 0x01b79aec, 0xa89a4f83,
	0x656e95e6, 0x7ee6ffaa, 0x08cfbc21, 0xe6e815ef,
	0xd99be7ba, 0xce366f4a, 0xd4099fea, 0xd67cb029,
	0xafb2a431, 0x31233f2a, 0x3094a5c6, 0xc066a235,
	0x37bc4e74, 0xa6ca82fc, 0xb0d090e0, 0x15d8a733,
	0x4a9804f1, 0xf7daec41, 0x0e50cd7f, 0x2ff69117,
	0x8dd64d76, 0x4db0ef43, 0x544daacc, 0xdf0496e4,
	0xe3b5d19e, 0x1b886a4c, 0xb81f2cc1, 0x7f516546,
	0x04ea5e9d, 0x5d358c01, 0x737487fa, 0x2e410bfb,
	0x5a1d67b3, 0x52d2db92, 0x335610e9, 0x1347d66d,
	0x8c61d79a, 0x7a0ca137, 0x8e14f859, 0x893c13eb,
	0xee27a9ce, 0x35c961b7, 0xede51ce1, 0x3cb1477a,
	0x59dfd29c, 0x3f73f255, 0x79ce1418, 0xbf37c773,
	0xeacdf753, 0x5baafd5f, 0x146f3ddf, 0x86db4478,
	0x81f3afca, 0x3ec468b9, 0x2c342438, 0x5f40a3c2,
	0x72c31d16, 0x0c25e2bc, 0x8b493c28, 0x41950dff,
	0x7101a839, 0xdeb30c08, 0x9ce4b4d8, 0x90c15664,
	0x6184cb7b, 0x70b632d5, 0x745c6c48, 0x4257b8d0,
};

static const uint32_t Td1[256] = {
	0xa7f45150, 0x65417e53, 0xa4171ac3, 0x5e273a96,
	0x6bab3bcb, 0x459d1ff1, 0x58faacab, 0x03e34b93,
	0xfa302055, 0x6d76adf6, 0x76cc8891, 0x4c02f525,
	0xd7e54ffc, 0xcb2ac5d7, 0x44352680, 0xa362b58f,
	0x5ab1de49, 0x1bba2567, 0x0eea4598, 0xc0fe5de1,
	0x752fc302, 0xf04c8112, 0x97468da3, 0xf9d36bc6,
	0x5f8f03e7, 0x9c921595, 0x7a6dbfeb, 0x595295da,
	0x83bed42d, 0x217458d3, 0x69e04929, 0xc8c98e44,
	0x89c2756a, 0x798ef478, 0x3e58996b, 0x71b927dd,
	0x4fe1beb6, 0xad88f017, 0xac20c966, 0x3ace7db4,
	0x4adf6318, 0x311ae582, 0x33519760, 0x7f536245,
	0x7764b1e0, 0xae6bbb84, 0xa081fe1c, 0x2b08f994,
	0x68487058, 0xfd458f19, 0x6cde9487, 0xf87b52b7,
	0xd373ab23, 0x024b72e2, 0x8f1fe357, 0xab55662a,
	0x28ebb207, 0xc2b52f03, 0x7bc5869a, 0x0837d3a5,
	0x872830f2, 0xa5bf23b2, 0x6a0302ba, 0x8216ed5c,
	0x1ccf8a2b, 0xb479a792, 0xf207f3f0, 0xe2694ea1,
	0xf4da65cd, 0xbe0506d5, 0x6234d11f, 0xfea6c48a,
	0x532e349d, 0x55f3a2a0, 0xe18a0532, 0xebf6a475,
	0xec830b39, 0xef6040aa, 0x9f715e06, 0x106ebd51,
	0x8a213ef9, 0x06dd963d, 0x053eddae, 0xbde64d46,
	0x8d5491b5, 0x5dc47105, 0xd406046f, 0x155060ff,
	0xfb981924, 0xe9bdd697, 0x434089cc, 0x9ed96777,
	0x42e8b0bd, 0x8b890788, 0x5b19e738, 0xeec879db,
	0x0a7ca147, 0x0f427ce9, 0x1e84f8c9, 0x00000000,
	0x86800983, 0xed2b3248, 0x70111eac, 0x725a6c4e,
	0xff0efdfb, 0x38850f56, 0xd5ae3d1e, 0x392d3627,
	0xd90f0a64, 0xa65c6821, 0x545b9bd1, 0x2e36243a,
	0x670a0cb1, 0xe757930f, 0x96eeb4d2, 0x919b1b9e,
	0xc5c0804f, 0x20dc61a2, 0x4b775a69, 0x1a121c16,
	0xba93e20a, 0x2aa0c0e5, 0xe0223c43, 0x171b121d,
	0x0d090e0b, 0xc78bf2ad, 0xa8b62db9, 0xa91e14c8,
	0x19f15785, 0x0775af4c, 0xdd99eebb, 0x607fa3fd,
	0x2601f79f, 0xf5725cbc, 0x3b6644c5, 0x7efb5b34,
	0x29438b76, 0xc623cbdc, 0xfcedb668, 0xf1e4b863,
	0xdc31d7ca, 0x85634210, 0x22971340, 0x11c68420,
	0x244a857d, 0x3dbbd2f8, 0x32f9ae11, 0xa129c76d,
	0x2f9e1d4b, 0x30b2dcf3, 0x52860dec, 0xe3c177d0,
	0x16b32b6c, 0xb970a999, 0x489411fa, 0x64e94722,
	0x8cfca8c4, 0x3ff0a01a, 0x2c7d56d8, 0x903322ef,
	0x4e4987c7, 0xd138d9c1, 0xa2ca8cfe, 0x0bd49836,
	0x81f5a6cf, 0xde7aa528, 0x8eb7da26, 0xbfad3fa4,
	0x9d3a2ce4, 0x9278500d, 0xcc5f6a9b, 0x467e5462,
	0x138df6c2, 0xb8d890e8, 0xf7392e5e, 0xafc382f5,
	0x805d9fbe, 0x93d0697c, 0x2dd56fa9, 0x1225cfb3,
	0x99acc83b, 0x7d1810a7, 0x639ce86e, 0xbb3bdb7b,
	0x7826cd09, 0x18596ef4, 0xb79aec01, 0x9a4f83a8,
	0x6e95e665, 0xe6ffaa7e, 0xcfbc2108, 0xe815efe6,
	0x9be7bad9, 0x366f4ace, 0x099fead4, 0x7cb029d6,
	0xb2a431af, 0x233f2a31, 0x94a5c630, 0x66a235c0,
	0xbc4e7437, 0xca82fca6, 0xd090e0b0, 0xd8a73315,
	0x9804f14a, 0xdaec41f7, 0x50cd7f0e, 0xf691172f,
	0xd64d768d, 0xb0ef434d, 0x4daacc54, 0x0496e4df,
	0xb5d19ee3, 0x886a4c1b, 0x1f2cc1b8, 0x5165467f,
	0xea5e9d04, 0x358c015d, 0x7487fa73, 0x410bfb2e,
	0x1d67b35a, 0xd2db9252, 0x5610e933, 0x47d66d13,
	0x61d79a8c, 0x0ca1377a, 0x14f8598e, 0x3c13eb89,
	0x27a9ceee, 0xc961b735, 0xe51ce1ed, 0xb1477a3c,
	0xdfd29c59, 0x73f2553f, 0xce141879, 0x37c773bf,
	0xcdf753ea, 0xaafd5f5b, 0x6f3ddf14, 0xdb447886,
	0xf3afca81, 0xc468b93e, 0x3424382c, 0x40a3c25f,
	0xc31d1672, 0x25e2bc0c, 0x493c288b, 0x950dff41,
	0x01a83971, 0xb30c08de, 0xe4b4d89c, 0xc1566490,
	0x84cb7b61, 0xb632d570, 0x5c6c4874, 0x57b8d042,
};

static const uint32_t Td2[256] = {
	0xf45150a7, 0x417e5365, 0x171ac3a4, 0x273a965e,
	0xab3bcb6b, 0x9d1ff145, 0xfaacab58, 0xe34b9303,
	0x302055fa, 0x76adf66d, 0xcc889176, 0x02f5254c,
	0xe54ffcd7, 0x2ac5d7cb, 0x35268044, 0x62b58fa3,
	0xb1de495a, 0xba25671b, 0xea45980e, 0xfe5de1c0,
	0x2fc30275, 0x4c8112f0, 0x468da397, 0xd36bc6f9,
	0x8f03e75f, 0x9215959c, 0x6dbfeb7a, 0x5295da59,
	0xbed42d83, 0x7458d321, 0xe0492969, 0xc98e44c8,
	0xc2756a89, 0x8ef47879, 0x58996b3e, 0xb927dd71,
	0xe1beb64f, 0x88f017ad, 0x20c966ac, 0xce7db43a,
	0xdf63184a, 0x1ae58231, 0x51976033, 0x5362457f,
	0x64b1e077, 0x6bbb84ae, 0x81fe1ca0, 0x08f9942b,
	0x48705868, 0x458f19fd, 0xde94876c, 0x7b52b7f8,
	0x73ab23d3, 0x4b72e202, 0x1fe3578f, 0x55662aab,
	0xebb20728, 0xb52f03c2, 0xc5869a7b, 0x37d3a508,
	0x2830f287, 0xbf23b2a5, 0x0302ba6a, 0x16ed5c82,
	0xcf8a2b1c, 0x79a792b4, 0x07f3f0f2, 0x694ea1e2,
	0xda65cdf4, 0x0506d5be, 0x34d11f62, 0xa6c48afe,
	0x2e349d53, 0xf3a2a055, 0x8a0532e1, 0xf6a475eb,
	0x830b39ec, 0x6040aaef, 0x715e069f, 0x6ebd5110,
	0x213ef98a, 0xdd963d06, 0x3eddae05, 0xe64d46bd,
	0x5491b58d, 0xc471055d, 0x06046fd4, 0x5060ff15,
	0x981924fb, 0xbdd697e9, 0x4089cc43, 0xd967779e,
	0xe8b0bd42, 0x8907888b, 0x19e7385b, 0xc879dbee,
	0x7ca1470a, 0x427ce90f, 0x84f8c91e, 0x00000000,
	0x80098386, 0x2b3248ed, 0x111eac70, 0x5a6c4e72,
	0x0efdfbff, 0x850f5638, 0xae3d1ed5, 0x2d362739,
	0x0f0a64d9, 0x5c6821a6, 0x5b9bd154, 0x36243a2e,
	0x0a0cb167, 0x57930fe7, 0xeeb4d296, 0x9b1b9e91,
	0xc0804fc5, 0xdc61a220, 0x775a694b, 0x121c161a,
	0x93e20aba, 0xa0c0e52a, 0x223c43e0, 0x1b121d17,
	0x090e0b0d, 0x8bf2adc7, 0xb62db9a8, 0x1e14c8a9,
	0xf1578519, 0x75af4c07, 0x99eebbdd, 0x7fa3fd60,
	0x01f79f26, 0x725cbcf5, 0x6644c53b, 0xfb5b347e,
	0x438b7629, 0x23cbdcc6, 0xedb668fc, 0xe4b863f1,
	0x31d7cadc, 0x63421085, 0x97134022, 0xc6842011,
	0x4a857d24, 0xbbd2f83d, 0xf9ae1132, 0x29c76da1,
	0x9e1d4b2f, 0xb2dcf330, 0x860dec52, 0xc177d0e3,
	0xb32b6c16, 0x70a999b9, 0x9411fa48, 0xe9472264,
	0xfca8c48c, 0xf0a01a3f, 0x7d56d82c, 0x3322ef90,
	0x4987c74e, 0x38d9c1d1, 0xca8cfea2, 0xd498360b,
	0xf5a6cf81, 0x7aa528de, 0xb7da268e, 0xad3fa4bf,
	0x3a2ce49d, 0x78500d92, 0x5f6a9bcc, 0x7e546246,
	0x8df6c213, 0xd890e8b8, 0x392e5ef7, 0xc382f5af,
	0x5d9fbe80, 0xd0697c93, 0xd56fa92d, 0x25cfb312,
	0xacc83b99, 0x1810a77d, 0x9ce86e63, 0x3bdb7bbb,
	0x26cd0978, 0x596ef418, 0x9aec01b7, 0x4f83a89a,
	0x95e6656e, 0xffaa7ee6, 0xbc2108cf, 0x15efe6e8,
	0xe7bad99b, 0x6f4ace36, 0x9fead409, 0xb029d67c,
	0xa431afb2, 0x3f2a3123, 0xa5c63094, 0xa235c066,
	0x4e7437bc, 0x82fca6ca, 0x90e0b0d0, 0xa73315d8,
	0x04f14a98, 0xec41f7da, 0xcd7f0e50, 0x91172ff6,
	0x4d768dd6, 0xef434db0, 0xaacc544d, 0x96e4df04,
	0xd19ee3b5, 0x6a4c1b88, 0x2cc1b81f, 0x65467f51,
	0x5e9d04ea, 0x8c015d35, 0x87fa7374, 0x0bfb2e41,
	0x67b35a1d, 0xdb9252d2, 0x10e93356, 0xd66d1347,
	0xd79a8c61, 0xa1377a0c, 0xf8598e14, 0x13eb893c,
	0xa9ceee27, 0x61b735c9, 0x1ce1ede5, 0x477a3cb1,
	0xd29c59df, 0xf2553f73, 0x141879ce, 0xc773bf37,
	0xf753eacd, 0xfd5f5baa, 0x3ddf146f, 0x447886db,
	0xafca81f3, 0x68b93ec4, 0x24382c34, 0xa3c25f40,
	0x1d1672c3, 0xe2bc0c25, 0x3c288b49, 0x0dff4195,
	0xa8397101, 0x0c08deb3, 0xb4d89ce4, 0x566490c1,
	0xcb7b6184, 0x32d570b6, 0x6c48745c, 0xb8d04257,
};

static const uint32_t Td3[256] = {
	0x5150a7f4, 0x7e536541, 0x1ac3a417, 0x3a965e27,
	0x3bcb6bab, 0x1ff1459d, 0xacab58fa, 0x4b9303e3,
	0x2055fa30, 0xadf66d76, 0x889176cc, 0xf5254c02,
	0x4ffcd7e5, 0xc5d7cb2a, 0x26804435, 0xb58fa362,
	0xde495ab1, 0x25671bba, 0x45980eea, 0x5de1c0fe,
	0xc302752f, 0x8112f04c, 0x8da39746, 0x6bc6f9d3,
	0x03e75f8f, 0x15959c92, 0xbfeb7a6d, 0x95da5952,
	0xd42d83be, 0x58d32174, 0x492969e0, 0x8e44c8c9,
	0x756a89c2, 0xf478798e, 0x996b3e58, 0x27dd71b9,
	0xbeb64fe1, 0xf017ad88, 0xc966ac20, 0x7db43ace,
	0x63184adf, 0xe582311a, 0x97603351, 0x62457f53,
	0xb1e07764, 0xbb84ae6b, 0xfe1ca081, 0xf9942b08,
	0x70586848, 0x8f19fd45, 0x94876cde, 0x52b7f87b,
	0xab23d373, 0x72e2024b, 0xe3578f1f, 0x662aab55,
	0xb20728eb, 0x2f03c2b5, 0x869a7bc5, 0xd3a50837,
	0x30f28728, 0x23b2a5bf, 0x02ba6a03, 0xed5c8216,
	0x8a2b1ccf, 0xa792b479, 0xf3f0f207, 0x4ea1e269,
	0x65cdf4da, 0x06d5be05, 0xd11f6234, 0xc48afea6,
	0x349d532e, 0xa2a055f3, 0x0532e18a, 0xa475ebf6,
	0x0b39ec83, 0x40aaef60, 0x5e069f71, 0xbd51106e,
	0x3ef98a21, 0x963d06dd, 0xddae053e, 0x4d46bde6,
	0x91b58d54, 0x71055dc4, 0x046fd406, 0x60ff1550,
	0x1924fb98, 0xd697e9bd, 0x89cc4340, 0x67779ed9,
	0xb0bd42e8, 0x07888b89, 0xe7385b19, 0x79dbeec8,
	0xa1470a7c, 0x7ce90f42, 0xf8c91e84, 0x00000000,
	0x09838680, 0x3248ed2b, 0x1eac7011, 0x6c4e725a,
	0xfdfbff0e, 0x0f563885, 0x3d1ed5ae, 0x3627392d,
	0x0a64d90f, 0x6821a65c, 0x9bd1545b, 0x243a2e36,
	0x0cb1670a, 0x930fe757, 0xb4d296ee, 0x1b9e919b,
	0x804fc5c0, 0x61a220dc, 0x5a694b77, 0x1c161a12,
	0xe20aba93, 0xc0e52aa0, 0x3c43e022, 0x121d171b,
	0x0e0b0d09, 0xf2adc78b, 0x2db9a8b6, 0x14c8a91e,
	0x578519f1, 0xaf4c0775, 0xeebbdd99, 0xa3fd607f,
	0xf79f2601, 0x5cbcf572, 0x44c53b66, 0x5b347efb,
	0x8b762943, 0xcbdcc623, 0xb668fced, 0xb863f1e4,
	0xd7cadc31, 0x42108563, 0x13402297, 0x842011c6,
	0x857d244a, 0xd2f83dbb, 0xae1132f9, 0xc76da129,
	0x1d4b2f9e, 0xdcf330b2, 0x0dec5286, 0x77d0e3c1,
	0x2b6c16b3, 0xa999b970, 0x11fa4894, 0x472264e9,
	0xa8c48cfc, 0xa01a3ff0, 0x56d82c7d, 0x22ef9033,
	0x87c74e49, 0xd9c1d138, 0x8cfea2ca, 0x98360bd4,
	0xa6cf81f5, 0xa528de7a, 0xda268eb7, 0x3fa4bfad,
	0x2ce49d3a, 0x500d9278, 0x6a9bcc5f, 0x5462467e,
	0xf6c2138d, 0x90e8b8d8, 0x2e5ef739, 0x82f5afc3,
	0x9fbe805d, 0x697c93d0, 0x6fa92dd5, 0xcfb31225,
	0xc83b99ac, 0x10a77d18, 0xe86e639c, 0xdb7bbb3b,
	0xcd097826, 0x6ef41859, 0xec01b79a, 0x83a89a4f,
	0xe6656e95, 0xaa7ee6ff, 0x2108cfbc, 0xefe6e815,
	0xbad99be7, 0x4ace366f, 0xead4099f, 0x29d67cb0,
	0x31afb2a4, 0x2a31233f, 0xc63094a5, 0x35c066a2,
	0x7437bc4e, 0xfca6ca82, 0xe0b0d090, 0x3315d8a7,
	0xf14a9804, 0x41f7daec, 0x7f0e50cd, 0x172ff691,
	0x768dd64d, 0x434db0ef, 0xcc544daa, 0xe4df0496,
	0x9ee3b5d1, 0x4c1b886a, 0xc1b81f2c, 0x467f5165,
	0x9d04ea5e, 0x015d358c, 0xfa737487, 0xfb2e410b,
	0xb35a1d67, 0x9252d2db, 0xe9335610, 0x6d1347d6,
	0x9a8c61d7, 0x377a0ca1, 0x598e14f8, 0xeb893c13,
	0xceee27a9, 0xb735c961, 0xe1ede51c, 0x7a3cb147,
	0x9c59dfd2, 0x553f73f2, 0x1879ce14, 0x73bf37c7,
	0x53eacdf7, 0x5f5baafd, 0xdf146f3d, 0x7886db44,
	0xca81f3af, 0xb93ec468, 0x382c3424, 0xc25f40a3,
	0x1672c31d, 0xbc0c25e2, 0x288b493c, 0xff41950d,
	0x397101a8, 0x08deb30c, 0xd89ce4b4, 0x6490c156,
	0x7b6184cb, 0xd570b632, 0x48745c6c, 0xd04257b8,
};

/* RCON constants table */
static const uint32_t rcon[10] = {
	0x00000001, 0x00000002, 0x00000004, 0x00000008,
	0x00000010, 0x00000020, 0x00000040, 0x00000080,
	0x0000001B, 0x00000036
};

/* AES primitives *******************************************************/
/************************************************************************/

/* Encryption key schedule */
int aes_setkey_enc(aes_core_context *ctx, const uint8_t *key, uint32_t keybits)
{
	uint32_t i;
	uint32_t keysize = (keybits / 8);
	uint32_t *RK = (uint32_t*)(ctx->rk);
	int ret = -1;

	if((ctx == NULL) || (key == NULL)){
		goto err;
	}
	if(keybits == 128){
		ctx->nr = 10;
	}
	else if(keybits == 192){
		ctx->nr = 12;
	}
	else if(keybits == 256){
		ctx->nr = 14;
	}
	else{
		goto err;
	}
	/* Perform the key schedule */
	for(i = 0; i < (keysize / 4); i++){
		GET_UINT32_LE(RK[i], key, (4*i));
	}

	switch(ctx->nr){
		case 10:{
			for(i = 0; i < 10; i++){
				RK[4]  = RK[0] ^ rcon[i] ^
					( (uint32_t) sbox[ ( RK[3] >>  8 ) & 0xFF ]       ) ^
					( (uint32_t) sbox[ ( RK[3] >> 16 ) & 0xFF ] <<  8 ) ^
					( (uint32_t) sbox[ ( RK[3] >> 24 ) & 0xFF ] << 16 ) ^
					( (uint32_t) sbox[ ( RK[3]       ) & 0xFF ] << 24 );
				RK[5]  = RK[1] ^ RK[4];
				RK[6]  = RK[2] ^ RK[5];
				RK[7]  = RK[3] ^ RK[6];
				RK += 4;
			}
			break;
		}
		case 12:{
			for(i = 0; i < 8; i++){
				RK[6]  = RK[0] ^ rcon[i] ^
					( (uint32_t) sbox[ ( RK[5] >>  8 ) & 0xFF ]       ) ^
					( (uint32_t) sbox[ ( RK[5] >> 16 ) & 0xFF ] <<  8 ) ^
					( (uint32_t) sbox[ ( RK[5] >> 24 ) & 0xFF ] << 16 ) ^
					( (uint32_t) sbox[ ( RK[5]       ) & 0xFF ] << 24 );
				RK[7]  = RK[1] ^ RK[6];
				RK[8]  = RK[2] ^ RK[7];
				RK[9]  = RK[3] ^ RK[8];
				RK[10] = RK[4] ^ RK[9];
				RK[11] = RK[5] ^ RK[10];
				RK += 6;
			}
			break;
		}
		case 14:{
			for(i = 0; i < 7; i++){
				RK[8]  = RK[0] ^ rcon[i] ^
					( (uint32_t) sbox[ ( RK[7] >>  8 ) & 0xFF ]       ) ^
					( (uint32_t) sbox[ ( RK[7] >> 16 ) & 0xFF ] <<  8 ) ^
					( (uint32_t) sbox[ ( RK[7] >> 24 ) & 0xFF ] << 16 ) ^
					( (uint32_t) sbox[ ( RK[7]       ) & 0xFF ] << 24 );
				RK[9]  = RK[1] ^ RK[8];
				RK[10] = RK[2] ^ RK[9];
				RK[11] = RK[3] ^ RK[10];
				RK[12] = RK[4] ^
					( (uint32_t) sbox[ ( RK[11]       ) & 0xFF ]       ) ^
					( (uint32_t) sbox[ ( RK[11] >>  8 ) & 0xFF ] <<  8 ) ^
					( (uint32_t) sbox[ ( RK[11] >> 16 ) & 0xFF ] << 16 ) ^
					( (uint32_t) sbox[ ( RK[11] >> 24 ) & 0xFF ] << 24 );
				RK[13] = RK[5] ^ RK[12];
				RK[14] = RK[6] ^ RK[13];
				RK[15] = RK[7] ^ RK[14];
				RK += 8;
			}
			break;
		}
		default:{
			goto err;
		}
	}

	ret = 0;

err:
	return ret;
}

/* Encryption primitive */
#define AES_ENC_ROUND(X0, X1, X2, X3, Y0, Y1, Y2, Y3)	  \
do {							  \
    (X0) = (*RK) ^ Te0[ ( (Y0)	     ) & 0xFF ] ^	  \
		   Te1[ ( (Y1) >>  8 ) & 0xFF ] ^	  \
		   Te2[ ( (Y2) >> 16 ) & 0xFF ] ^	  \
		   Te3[ ( (Y3) >> 24 ) & 0xFF ]; RK++;	  \
							  \
    (X1) = (*RK) ^ Te0[ ( (Y1)	     ) & 0xFF ] ^	  \
		   Te1[ ( (Y2) >>  8 ) & 0xFF ] ^	  \
		   Te2[ ( (Y3) >> 16 ) & 0xFF ] ^	  \
		   Te3[ ( (Y0) >> 24 ) & 0xFF ]; RK++;	  \
							  \
    (X2) = (*RK) ^ Te0[ ( (Y2)	     ) & 0xFF ] ^	  \
		   Te1[ ( (Y3) >>  8 ) & 0xFF ] ^	  \
		   Te2[ ( (Y0) >> 16 ) & 0xFF ] ^	  \
		   Te3[ ( (Y1) >> 24 ) & 0xFF ]; RK++;	  \
							  \
    (X3) = (*RK) ^ Te0[ ( (Y3)	     ) & 0xFF ] ^	  \
		   Te1[ ( (Y0) >>  8 ) & 0xFF ] ^	  \
		   Te2[ ( (Y1) >> 16 ) & 0xFF ] ^	  \
		   Te3[ ( (Y2) >> 24 ) & 0xFF ]; RK++;	  \
} while( 0 )

int aes_enc(aes_core_context *ctx, const uint8_t data_in[16], uint8_t data_out[16])
{
	uint32_t i;
	/* Our local key and state */
	uint32_t *RK, X0, X1, X2, X3, Y0, Y1, Y2, Y3;
	int ret = -1;

	if((ctx == NULL) || (data_in == NULL) || (data_out == NULL)){
		goto err;
	}
	/* Sanity check for array access */
	if((16 * (ctx->nr + 1)) > sizeof(ctx->rk)){
		goto err;
	}
	if((ctx->nr >> 1) == 0){
		goto err;
	}

	/* Go for AES rounds */
	RK = (uint32_t*)ctx->rk;
	GET_UINT32_LE(X0, data_in,  0 ); X0 ^= (*RK); RK++;
	GET_UINT32_LE(X1, data_in,  4 ); X1 ^= (*RK); RK++;
	GET_UINT32_LE(X2, data_in,  8 ); X2 ^= (*RK); RK++;
	GET_UINT32_LE(X3, data_in, 12 ); X3 ^= (*RK); RK++;

	for(i = ((ctx->nr >> 1) - 1); i > 0; i--){
		AES_ENC_ROUND(Y0, Y1, Y2, Y3, X0, X1, X2, X3);
		AES_ENC_ROUND(X0, X1, X2, X3, Y0, Y1, Y2, Y3);
	}

	AES_ENC_ROUND(Y0, Y1, Y2, Y3, X0, X1, X2, X3);

	/* Last round without Mixcolumns */
	X0 = (*RK) ^
	    ( (uint32_t) sbox[ ( Y0	  ) & 0xFF ]	   ) ^
	    ( (uint32_t) sbox[ ( Y1 >>  8 ) & 0xFF ] <<  8 ) ^
	    ( (uint32_t) sbox[ ( Y2 >> 16 ) & 0xFF ] << 16 ) ^
	    ( (uint32_t) sbox[ ( Y3 >> 24 ) & 0xFF ] << 24 ); RK++;

	X1 = (*RK) ^
	    ( (uint32_t) sbox[ ( Y1       ) & 0xFF ]       ) ^
	    ( (uint32_t) sbox[ ( Y2 >>  8 ) & 0xFF ] <<  8 ) ^
	    ( (uint32_t) sbox[ ( Y3 >> 16 ) & 0xFF ] << 16 ) ^
	    ( (uint32_t) sbox[ ( Y0 >> 24 ) & 0xFF ] << 24 ); RK++;

	X2 = (*RK) ^
	   ( (uint32_t) sbox[ ( Y2       ) & 0xFF ]       ) ^
	   ( (uint32_t) sbox[ ( Y3 >>  8 ) & 0xFF ] <<  8 ) ^
	   ( (uint32_t) sbox[ ( Y0 >> 16 ) & 0xFF ] << 16 ) ^
	   ( (uint32_t) sbox[ ( Y1 >> 24 ) & 0xFF ] << 24 ); RK++;

	X3 = (*RK) ^
	   ( (uint32_t) sbox[ ( Y3       ) & 0xFF ]       ) ^
	   ( (uint32_t) sbox[ ( Y0 >>  8 ) & 0xFF ] <<  8 ) ^
	   ( (uint32_t) sbox[ ( Y1 >> 16 ) & 0xFF ] << 16 ) ^
	   ( (uint32_t) sbox[ ( Y2 >> 24 ) & 0xFF ] << 24 ); RK++;

	PUT_UINT32_LE(X0, data_out,  0);
	PUT_UINT32_LE(X1, data_out,  4);
	PUT_UINT32_LE(X2, data_out,  8);
	PUT_UINT32_LE(X3, data_out, 12);

	/* Clean stuff */
	local_set(&X0, 0, sizeof(X0)); local_set(&X1, 0, sizeof(X1));
	local_set(&X2, 0, sizeof(X2)); local_set(&X3, 0, sizeof(X3));
	/* */
	local_set(&Y0, 0, sizeof(Y0)); local_set(&Y1, 0, sizeof(Y1));
	local_set(&Y2, 0, sizeof(Y2)); local_set(&Y3, 0, sizeof(Y3));

	ret = 0;

err:
	return ret;
}

/* Decryption key schedule */
int aes_setkey_dec(aes_core_context *ctx, const uint8_t *key, uint32_t keybits)
{
	uint32_t i, j;
	aes_core_context ctxx;
	uint32_t *RK = (uint32_t*)(ctx->rk);
	uint32_t *SK;
	int ret = -1;

	if((ctx == NULL) || (key == NULL)){
		goto err;
	}
	/* Perform encryption key schedule */
	if(aes_setkey_enc(&ctxx, key, keybits)){
		goto err;
	}
	ctx->nr = ctxx.nr;

	/* Now modify the context accordingly to decryption 
	 * by reversing the key order.
	 */
	SK = (uint32_t*)(ctxx.rk + (4 * ctxx.nr));
	(*RK) = (*SK); RK++; SK++;
	(*RK) = (*SK); RK++; SK++;
	(*RK) = (*SK); RK++; SK++;
	(*RK) = (*SK); RK++; SK++;
	for(i = (ctx->nr - 1), SK -= 8; i > 0; i--){
		for(j = 0; j < 4; j++){
			*RK++ = Td0[ sbox[ ( (*SK)       ) & 0xFF ] ] ^
				Td1[ sbox[ ( (*SK) >>  8 ) & 0xFF ] ] ^
				Td2[ sbox[ ( (*SK) >> 16 ) & 0xFF ] ] ^
				Td3[ sbox[ ( (*SK) >> 24 ) & 0xFF ] ];
			SK++;
		}
		SK -= 8;
	}
	(*RK) = (*SK); RK++; SK++;
	(*RK) = (*SK); RK++; SK++;
	(*RK) = (*SK); RK++; SK++;
	(*RK) = (*SK); RK++; SK++;

	ret = 0;

err:
	return ret;
}

/* Decryption primitive */
#define AES_DEC_ROUND(X0, X1, X2, X3, Y0, Y1, Y2, Y3)	  \
do {							  \
    (X0) = (*RK) ^ Td0[ ( (Y0)	     ) & 0xFF ] ^	  \
		   Td1[ ( (Y3) >>  8 ) & 0xFF ] ^	  \
		   Td2[ ( (Y2) >> 16 ) & 0xFF ] ^	  \
		   Td3[ ( (Y1) >> 24 ) & 0xFF ]; RK++;	  \
							  \
    (X1) = (*RK) ^ Td0[ ( (Y1)	     ) & 0xFF ] ^	  \
		   Td1[ ( (Y0) >>  8 ) & 0xFF ] ^	  \
		   Td2[ ( (Y3) >> 16 ) & 0xFF ] ^	  \
		   Td3[ ( (Y2) >> 24 ) & 0xFF ]; RK++;	  \
							  \
    (X2) = (*RK) ^ Td0[ ( (Y2)	     ) & 0xFF ] ^	  \
		   Td1[ ( (Y1) >>  8 ) & 0xFF ] ^	  \
		   Td2[ ( (Y0) >> 16 ) & 0xFF ] ^	  \
		   Td3[ ( (Y3) >> 24 ) & 0xFF ]; RK++;	  \
							  \
    (X3) = (*RK) ^ Td0[ ( (Y3)	     ) & 0xFF ] ^	  \
		   Td1[ ( (Y2) >>  8 ) & 0xFF ] ^	  \
		   Td2[ ( (Y1) >> 16 ) & 0xFF ] ^	  \
		   Td3[ ( (Y0) >> 24 ) & 0xFF ]; RK++;	  \
} while( 0 )

int aes_dec(aes_core_context *ctx, const uint8_t data_in[16], uint8_t data_out[16])
{
	uint32_t i;
	/* Our local key and state */
	uint32_t *RK, X0, X1, X2, X3, Y0, Y1, Y2, Y3;
	int ret = -1;

	if((ctx == NULL) || (data_in == NULL) || (data_out == NULL)){
		goto err;
	}
	/* Sanity check for array access */
	if((16 * (ctx->nr + 1)) > sizeof(ctx->rk)){
		goto err;
	}
	if((ctx->nr >> 1) == 0){
		goto err;
	}

	/* Go for AES rounds */
	RK = (uint32_t*)ctx->rk;
	GET_UINT32_LE(X0, data_in,  0 ); X0 ^= (*RK); RK++;
	GET_UINT32_LE(X1, data_in,  4 ); X1 ^= (*RK); RK++;
	GET_UINT32_LE(X2, data_in,  8 ); X2 ^= (*RK); RK++;
	GET_UINT32_LE(X3, data_in, 12 ); X3 ^= (*RK); RK++;

	for(i = (ctx->nr >> 1) - 1; i > 0; i--){
		AES_DEC_ROUND(Y0, Y1, Y2, Y3, X0, X1, X2, X3);
		AES_DEC_ROUND(X0, X1, X2, X3, Y0, Y1, Y2, Y3);
	}

	AES_DEC_ROUND(Y0, Y1, Y2, Y3, X0, X1, X2, X3);

	/* Last round without Mixcolumns */
	X0 = (*RK) ^
	    ( (uint32_t) inv_sbox[ ( Y0	      ) & 0xFF ]       ) ^
	    ( (uint32_t) inv_sbox[ ( Y3 >>  8 ) & 0xFF ] <<  8 ) ^
	    ( (uint32_t) inv_sbox[ ( Y2 >> 16 ) & 0xFF ] << 16 ) ^
	    ( (uint32_t) inv_sbox[ ( Y1 >> 24 ) & 0xFF ] << 24 ); RK++;

	X1 = (*RK) ^
	    ( (uint32_t) inv_sbox[ ( Y1       ) & 0xFF ]       ) ^
	    ( (uint32_t) inv_sbox[ ( Y0 >>  8 ) & 0xFF ] <<  8 ) ^
	    ( (uint32_t) inv_sbox[ ( Y3 >> 16 ) & 0xFF ] << 16 ) ^
	    ( (uint32_t) inv_sbox[ ( Y2 >> 24 ) & 0xFF ] << 24 ); RK++;

	X2 = (*RK) ^
	   ( (uint32_t) inv_sbox[ ( Y2       ) & 0xFF ]       ) ^
	   ( (uint32_t) inv_sbox[ ( Y1 >>  8 ) & 0xFF ] <<  8 ) ^
	   ( (uint32_t) inv_sbox[ ( Y0 >> 16 ) & 0xFF ] << 16 ) ^
	   ( (uint32_t) inv_sbox[ ( Y3 >> 24 ) & 0xFF ] << 24 ); RK++;

	X3 = (*RK) ^
	   ( (uint32_t) inv_sbox[ ( Y3       ) & 0xFF ]       ) ^
	   ( (uint32_t) inv_sbox[ ( Y2 >>  8 ) & 0xFF ] <<  8 ) ^
	   ( (uint32_t) inv_sbox[ ( Y1 >> 16 ) & 0xFF ] << 16 ) ^
	   ( (uint32_t) inv_sbox[ ( Y0 >> 24 ) & 0xFF ] << 24 ); RK++;

	PUT_UINT32_LE(X0, data_out,  0);
	PUT_UINT32_LE(X1, data_out,  4);
	PUT_UINT32_LE(X2, data_out,  8);
	PUT_UINT32_LE(X3, data_out, 12);

	/* Clean stuff */
	local_set(&X0, 0, sizeof(X0)); local_set(&X1, 0, sizeof(X1));
	local_set(&X2, 0, sizeof(X2)); local_set(&X3, 0, sizeof(X3));
	/* */
	local_set(&Y0, 0, sizeof(Y0)); local_set(&Y1, 0, sizeof(Y1));
	local_set(&Y2, 0, sizeof(Y2)); local_set(&Y3, 0, sizeof(Y3));

	ret = 0;

err:
	return ret;
}

#endif

#else /* !WITH_BC_AES */
/*
 * Dummy definition to avoid the empty translation unit ISO C warning
 */
typedef int dummy;
#endif /* WITH_BC_AES */