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clear potential null dereference

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Ruby Martin
2026-05-06 14:33:14 -06:00
parent 80f971cd6d
commit e085d468d8
1 changed files with 13 additions and 6 deletions
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wolfcrypt/src/evp.c
+13 -6
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@@ -11317,6 +11317,10 @@ int wolfSSL_EVP_MD_type(const WOLFSSL_EVP_MD* type)
unsigned int* s)
{
enum wc_HashType macType;
#if defined(WOLFSSL_SHA3) && (defined(WOLFSSL_SHAKE128) || \
defined(WOLFSSL_SHAKE256))
unsigned int defaultSz = 0;
#endif
WOLFSSL_ENTER("wolfSSL_EVP_DigestFinal");
@@ -11345,18 +11349,21 @@ int wolfSSL_EVP_MD_type(const WOLFSSL_EVP_MD* type)
case WC_HASH_TYPE_SHAKE128:
#if defined(WOLFSSL_SHA3) && defined(WOLFSSL_SHAKE128)
if (s != NULL)
*s = 16; /* if mixing up XOF with plain digest 128 bit is
* default for SHAKE128 */
if (s == NULL)
s = &defaultSz;
*s = 16; /* if mixing up XOF with plain digest 128 bit is
* default for SHAKE128 */
#else
return WOLFSSL_FAILURE;
#endif
break;
case WC_HASH_TYPE_SHAKE256:
#if defined(WOLFSSL_SHA3) && defined(WOLFSSL_SHAKE256)
if (s != NULL)
*s = 32; /* if mixing up XOF with plain digest 256 bit is
* default for SHAKE256 */
if (s == NULL)
s = &defaultSz;
*s = 32; /* if mixing up XOF with plain digest 256 bit is
* default for SHAKE256 */
#else
return WOLFSSL_FAILURE;
#endif