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Refactor Hardware RNG functions to esp/hwrand.h

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As suggested by @foogod, thanks!
This commit is contained in:
Angus Gratton 2015-09-24 20:48:16 +10:00
parent 09405a9095
commit 87f77b1021
3 changed files with 51 additions and 7 deletions
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9
extras/mbedtls/hardware_entropy.c
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@ -9,18 +9,13 @@
* BSD Licensed as described in the file LICENSE
*/
#include <mbedtls/entropy_poll.h>
#include <esp/wdev_regs.h>
#include <string.h>
#include <esp/hwrand.h>
int mbedtls_hardware_poll( void *data,
unsigned char *output, size_t len, size_t *olen )
{
(void)(data);
for(int i = 0; i < len; i+=4) {
uint32_t random = WDEV.HWRNG;
/* using memcpy here in case output is unaligned */
memcpy(output + i, &random, (i+4 <= len) ? 4 : (len % 4));
}
hwrand_fill(output, len);
if(olen)
*olen = len;
return 0;