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add ForceZero() to force memset(0)

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This commit is contained in:
toddouska
2015-02-20 15:51:21 -08:00
parent 732a0dd39a
commit 608da64ece
15 changed files with 105 additions and 70 deletions
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10
wolfcrypt/src/random.c
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@@ -227,7 +227,7 @@ static int Hash_DRBG_Reseed(DRBG* drbg, const byte* entropy, word32 entropySz)
}
XMEMCPY(drbg->V, seed, sizeof(drbg->V));
XMEMSET(seed, 0, sizeof(seed));
ForceZero(seed, sizeof(seed));
if (Hash_df(drbg, drbg->C, sizeof(drbg->C), drbgInitC, drbg->V,
sizeof(drbg->V), NULL, 0) != DRBG_SUCCESS) {
@@ -304,7 +304,7 @@ static int Hash_gen(DRBG* drbg, byte* out, word32 outSz, const byte* V)
outSz = 0;
}
}
XMEMSET(data, 0, sizeof(data));
ForceZero(data, sizeof(data));
return DRBG_SUCCESS;
}
@@ -396,7 +396,7 @@ static int Hash_DRBG_Instantiate(DRBG* drbg, const byte* seed, word32 seedSz,
/* Returns: DRBG_SUCCESS */
static int Hash_DRBG_Uninstantiate(DRBG* drbg)
{
XMEMSET(drbg, 0, sizeof(DRBG));
ForceZero(drbg, sizeof(DRBG));
return DRBG_SUCCESS;
}
@@ -428,7 +428,7 @@ int wc_InitRng(RNG* rng)
else
ret = DRBG_FAILURE;
XMEMSET(entropy, 0, ENTROPY_NONCE_SZ);
ForceZero(entropy, ENTROPY_NONCE_SZ);
if (ret == DRBG_SUCCESS) {
rng->status = DRBG_OK;
@@ -477,7 +477,7 @@ int wc_RNG_GenerateBlock(RNG* rng, byte* output, word32 sz)
else
ret = DRBG_FAILURE;
XMEMSET(entropy, 0, ENTROPY_SZ);
ForceZero(entropy, ENTROPY_SZ);
}
if (ret == DRBG_SUCCESS) {