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Code Issues Releases Wiki Activity

updates for VxWorks simulator entropy

pull/241/head
lchristina26 2016-01-04 14:33:30 -07:00
parent 3113c8db9b
commit 4834e2d5cf
1 changed files with 15 additions and 3 deletions
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18
wolfcrypt/src/random.c
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@ -1265,17 +1265,29 @@ int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
return 0;
}
#elif defined(WOLFSSL_VXWORKS)
#elif defined(WOLFSSL_VXWORKS) && defined(VXWORKS_SIM)
#include <randomNumGen.h>
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz) {
STATUS status;
unsigned char seed[1024];
int i = 0;
/* cannot generate true entropy with VxWorks simulator */
#warning "VxWorks simulator for testing purposes only!"
for (i = 0; i < sizeof(seed); i++) {
seed[i] = i * 3 % 256;
}
/* build entropy */
(void) randAdd(seed, 0, 0);
for (i = 4; i <= sizeof(seed); i*=2) {
(void) randAdd (seed, i - 1, i);
}
/* RANDOM ENTORPY INJECT component must be enabled in VSB project */
status = randBytes (output, sz);
if (status == ERROR) {
WOLFSSL_MSG("Random seed failed! Enable RANDOM ENTROPY INJECT.");
return RNG_FAILURE_E;
}