esp-idf/components/bt/esp_ble_mesh/mesh_common/mesh_util.c
lly 2bba9d7700 ble_mesh: miscellaneous modifications
1. Clean up client_common.c
2. Clean up esp_ble_mesh directory
3. Update Kconfig.in
4. Format esp_ble_mesh files
2019-11-08 11:10:52 +08:00

79 lines
1.6 KiB
C

/*
* Copyright (c) 2017 Nordic Semiconductor ASA
* Copyright (c) 2016 Vinayak Kariappa Chettimada
* Copyright (c) 2015-2016 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <string.h>
#include "sdkconfig.h"
#include "mesh_util.h"
#include "mesh_kernel.h"
#include "mesh_aes_encrypt.h"
#define MASK_TWENTY_SEVEN 0x1b
const char *bt_hex(const void *buf, size_t len)
{
static const char hex[] = "0123456789abcdef";
static char str[129];
const u8_t *b = buf;
int i;
len = MIN(len, (sizeof(str) - 1) / 2);
for (i = 0; i < len; i++) {
str[i * 2] = hex[b[i] >> 4];
str[i * 2 + 1] = hex[b[i] & 0xf];
}
str[i * 2] = '\0';
return str;
}
void mem_rcopy(u8_t *dst, u8_t const *src, u16_t len)
{
src += len;
while (len--) {
*dst++ = *--src;
}
}
unsigned int _copy(uint8_t *to, unsigned int to_len,
const uint8_t *from, unsigned int from_len)
{
if (from_len <= to_len) {
(void)memcpy(to, from, from_len);
return from_len;
} else {
return TC_CRYPTO_FAIL;
}
}
void _set(void *to, uint8_t val, unsigned int len)
{
(void)memset(to, val, len);
}
/*
* Doubles the value of a byte for values up to 127.
*/
uint8_t _double_byte(uint8_t a)
{
return ((a << 1) ^ ((a >> 7) * MASK_TWENTY_SEVEN));
}
int _compare(const uint8_t *a, const uint8_t *b, size_t size)
{
const uint8_t *tempa = a;
const uint8_t *tempb = b;
uint8_t result = 0;
for (unsigned int i = 0; i < size; i++) {
result |= tempa[i] ^ tempb[i];
}
return result;
}