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esp32: Add esp_fill_random() function

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Convenience function to fill a buffer with random bytes.

Add some unit tests (only sanity checks, really.)
This commit is contained in:
Angus Gratton
2018-08-15 18:20:16 +10:00
committed by bot
parent 767ec27350
commit 83a179abb0
12 changed files with 124 additions and 71 deletions
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6
examples/bluetooth/blufi/main/blufi_security.c
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@@ -61,11 +61,7 @@ static struct blufi_security *blufi_sec;
static int myrand( void *rng_state, unsigned char *output, size_t len )
{
size_t i;
for( i = 0; i < len; ++i )
output[i] = esp_random();
esp_fill_random(output, len);
return( 0 );
}

6
examples/wifi/espnow/main/espnow_example_main.c
View File

@@ -144,7 +144,6 @@ int example_espnow_data_parse(uint8_t *data, uint16_t data_len, uint8_t *state,
void example_espnow_data_prepare(example_espnow_send_param_t *send_param)
{
example_espnow_data_t *buf = (example_espnow_data_t *)send_param->buffer;
int i = 0;
assert(send_param->len >= sizeof(example_espnow_data_t));
@@ -153,9 +152,8 @@ void example_espnow_data_prepare(example_espnow_send_param_t *send_param)
buf->seq_num = s_example_espnow_seq[buf->type]++;
buf->crc = 0;
buf->magic = send_param->magic;
for (i = 0; i < send_param->len - sizeof(example_espnow_data_t); i++) {
buf->payload[i] = (uint8_t)esp_random();
}
/* Fill all remaining bytes after the data with random values */
esp_fill_random(buf->payload, send_param->len - sizeof(example_espnow_data_t));
buf->crc = crc16_le(UINT16_MAX, (uint8_t const *)buf, send_param->len);
}