add NULL validation to wolfCrypt APIs

Author: JeremiahM37

wolfcrypt/src/camellia.c

@@ -1521,7 +1521,7 @@ int wc_CamelliaSetKey(wc_Camellia* cam, const byte* key, word32 len, const byte*
 {
     int ret = 0;
 
-    if (cam == NULL) return BAD_FUNC_ARG;
+    if (cam == NULL || key == NULL) return BAD_FUNC_ARG;
 
     XMEMSET(cam->key, 0, WC_CAMELLIA_TABLE_BYTE_LEN);
 

wolfcrypt/src/compress.c

@@ -81,6 +81,9 @@ int wc_Compress_ex(byte* out, word32 outSz, const byte* in, word32 inSz,
     z_stream stream;
     int result = 0;
 
+    if (out == NULL || in == NULL)
+        return BAD_FUNC_ARG;
+
     stream.next_in = (Bytef*)in;
     stream.avail_in = (uInt)inSz;
 #ifdef MAXSEG_64K
@@ -149,6 +152,9 @@ int wc_DeCompress_ex(byte* out, word32 outSz, const byte* in, word32 inSz,
     z_stream stream;
     int result = 0;
 
+    if (out == NULL || in == NULL)
+        return BAD_FUNC_ARG;
+
     stream.next_in = (Bytef*)in;
     stream.avail_in = (uInt)inSz;
     /* Check for source > 64K on 16-bit machine: */

wolfcrypt/src/hmac.c

@@ -1395,7 +1395,7 @@ int  wc_HmacInit_Id(Hmac* hmac, unsigned char* id, int len, void* heap,
 
     if (ret == 0)
         ret = wc_HmacInit(hmac, heap, devId);
-    if (ret == 0) {
+    if (ret == 0 && id != NULL && len != 0) {
         XMEMCPY(hmac->id, id, (size_t)len);
         hmac->idLen = len;
     }

wolfcrypt/src/wc_lms.c

@@ -1159,7 +1159,8 @@ int wc_LmsKey_ExportPubRaw(const LmsKey* key, byte* out, word32* outLen)
     int ret = 0;
 
     /* Validate parameters. */
-    if ((key == NULL) || (out == NULL) || (outLen == NULL)) {
+    if ((key == NULL) || (out == NULL) || (outLen == NULL) ||
+            (key->params == NULL)) {
         ret = BAD_FUNC_ARG;
     }
     /* Check size of out is sufficient. */