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Merge pull request #9532 from kjbracey-arm/trng_mutex 

Mutex-protect mbedtls_hardware_poll
pull/9541/head
Cruz Monrreal 2019-01-29 16:53:41 -06:00 committed by GitHub
parent d1b367fbab 983503f9ee
commit ad04edf9c1
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1 changed files with 5 additions and 0 deletions
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5
features/mbedtls/platform/src/mbed_trng.c → features/mbedtls/platform/src/mbed_trng.cpp
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@ -17,12 +17,17 @@
#if DEVICE_TRNG #if DEVICE_TRNG
#include "hal/trng_api.h" #include "hal/trng_api.h"
#include "platform/PlatformMutex.h"
extern "C"
int mbedtls_hardware_poll( void *data, unsigned char *output, size_t len, size_t *olen ) { int mbedtls_hardware_poll( void *data, unsigned char *output, size_t len, size_t *olen ) {
static PlatformMutex trng_mutex;
trng_t trng_obj; trng_t trng_obj;
trng_mutex.lock();
trng_init(&trng_obj); trng_init(&trng_obj);
int ret = trng_get_bytes(&trng_obj, output, len, olen); int ret = trng_get_bytes(&trng_obj, output, len, olen);
trng_free(&trng_obj); trng_free(&trng_obj);
trng_mutex.unlock();
return ret; return ret;
} }