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Hakase
2018-11-07 08:48:19 +09:00
parent 35dea6db7e
commit 6a5fe3f2fd
58 changed files with 1042 additions and 567 deletions
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crypto/rand/drbg_lib.c
+27 -11
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@@ -158,8 +158,10 @@ int RAND_DRBG_set(RAND_DRBG *drbg, int type, unsigned int flags)
}
/* If set is called multiple times - clear the old one */
if (type != drbg->type && drbg->type != 0 && drbg->meth != NULL) {
if (drbg->type != 0 && (type != drbg->type || flags != drbg->flags)) {
drbg->meth->uninstantiate(drbg);
rand_pool_free(drbg->adin_pool);
drbg->adin_pool = NULL;
}
drbg->state = DRBG_UNINITIALISED;
@@ -168,6 +170,7 @@ int RAND_DRBG_set(RAND_DRBG *drbg, int type, unsigned int flags)
if (type == 0) {
/* Uninitialized; that's okay. */
drbg->meth = NULL;
return 1;
} else if (is_ctr(type)) {
ret = drbg_ctr_init(drbg);
@@ -177,12 +180,17 @@ int RAND_DRBG_set(RAND_DRBG *drbg, int type, unsigned int flags)
else
ret = drbg_hash_init(drbg);
} else {
drbg->type = 0;
drbg->flags = 0;
drbg->meth = NULL;
RANDerr(RAND_F_RAND_DRBG_SET, RAND_R_UNSUPPORTED_DRBG_TYPE);
return 0;
}
if (ret == 0)
if (ret == 0) {
drbg->state = DRBG_ERROR;
RANDerr(RAND_F_RAND_DRBG_SET, RAND_R_ERROR_INITIALISING_DRBG);
}
return ret;
}
@@ -287,10 +295,7 @@ static RAND_DRBG *rand_drbg_new(int secure,
return drbg;
err:
if (drbg->secure)
OPENSSL_secure_free(drbg);
else
OPENSSL_free(drbg);
RAND_DRBG_free(drbg);
return NULL;
}
@@ -315,6 +320,7 @@ void RAND_DRBG_free(RAND_DRBG *drbg)
if (drbg->meth != NULL)
drbg->meth->uninstantiate(drbg);
rand_pool_free(drbg->adin_pool);
CRYPTO_THREAD_lock_free(drbg->lock);
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DRBG, drbg, &drbg->ex_data);
@@ -431,6 +437,7 @@ int RAND_DRBG_uninstantiate(RAND_DRBG *drbg)
{
int index = -1, type, flags;
if (drbg->meth == NULL) {
drbg->state = DRBG_ERROR;
RANDerr(RAND_F_RAND_DRBG_UNINSTANTIATE,
RAND_R_NO_DRBG_IMPLEMENTATION_SELECTED);
return 0;
@@ -722,9 +729,18 @@ int RAND_DRBG_bytes(RAND_DRBG *drbg, unsigned char *out, size_t outlen)
unsigned char *additional = NULL;
size_t additional_len;
size_t chunk;
size_t ret;
size_t ret = 0;
additional_len = rand_drbg_get_additional_data(&additional, drbg->max_adinlen);
if (drbg->adin_pool == NULL) {
if (drbg->type == 0)
goto err;
drbg->adin_pool = rand_pool_new(0, 0, drbg->max_adinlen);
if (drbg->adin_pool == NULL)
goto err;
}
additional_len = rand_drbg_get_additional_data(drbg->adin_pool,
&additional);
for ( ; outlen > 0; outlen -= chunk, out += chunk) {
chunk = outlen;
@@ -736,9 +752,9 @@ int RAND_DRBG_bytes(RAND_DRBG *drbg, unsigned char *out, size_t outlen)
}
ret = 1;
err:
if (additional_len != 0)
OPENSSL_secure_clear_free(additional, additional_len);
err:
if (additional != NULL)
rand_drbg_cleanup_additional_data(drbg->adin_pool, additional);
return ret;
}