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Merge pull request #3818 from dgarske/zd11760

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Fix for InTime RTOS v5 random
This commit is contained in:
toddouska
2021-03-04 11:14:34 -08:00
committed by GitHub
parent b8235649ea 3752347f14
commit bd57e3e4cf
1 changed files with 23 additions and 7 deletions
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30
wolfcrypt/src/random.c
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@@ -2236,19 +2236,35 @@ int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
#elif defined(INTIME_RTOS) #elif defined(INTIME_RTOS)
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz) int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
{ {
int ret = 0; uint32_t randval;
word32 len;
(void)os;
if (output == NULL) { if (output == NULL) {
return BUFFER_E; return BUFFER_E;
} }
/* Note: Investigate better solution */ #ifdef INTIMEVER
/* no return to check */ /* If INTIMEVER exists then it is INTIME RTOS v6 or later */
arc4random_buf(output, sz); #define INTIME_RAND_FUNC arc4random
len = 4;
#else
/* v5 and older */
#define INTIME_RAND_FUNC rand
srand(time(0));
len = 2; /* don't use all 31 returned bits */
#endif
return ret; while (sz > 0) {
if (sz < len)
len = sz;
randval = INTIME_RAND_FUNC();
XMEMCPY(output, &randval, len);
output += len;
sz -= len;
}
(void)os;
return 0;
} }
#elif defined(WOLFSSL_WICED) #elif defined(WOLFSSL_WICED)