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Add entropy sanity check

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Reviewed-by: Kurt Roeckx <kurt@roeckx.be>
(Merged from https://github.com/openssl/openssl/pull/4092)
This commit is contained in:
Dr. Stephen Henson 2017-08-05 12:04:10 +01:00
parent 78632b6633
commit 4c78ba5918
1 changed files with 5 additions and 0 deletions
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5
crypto/rand/drbg_rand.c
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@ -243,6 +243,9 @@ int ctr_instantiate(RAND_DRBG *drbg,
{
RAND_DRBG_CTR *ctr = &drbg->ctr;
if (ent == NULL)
return 0;
memset(ctr->K, 0, sizeof(ctr->K));
memset(ctr->V, 0, sizeof(ctr->V));
AES_set_encrypt_key(ctr->K, drbg->strength, &ctr->ks);
@ -254,6 +257,8 @@ int ctr_reseed(RAND_DRBG *drbg,
const unsigned char *ent, size_t entlen,
const unsigned char *adin, size_t adinlen)
{
if (ent == NULL)
return 0;
ctr_update(drbg, ent, entlen, adin, adinlen, NULL, 0);
return 1;
}