Avoid null pointer dereference in md2_digest

Legrandin · Aug 18, 2024 · 38033a3 · 38033a3
1 parent 959c93a
commit 38033a3
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/MD2.c b/src/MD2.c
@@ -138,12 +138,12 @@ EXPORT_SYM int md2_digest(const hash_state *hs, uint8_t digest[16])
     uint8_t padding[16];
     unsigned padlen, i;
     hash_state temp;
-
-    assert(hs->count < 16);
 
     if (NULL==hs || digest==NULL)
         return ERR_NULL;
-
+
+    assert(hs->count < 16);
+
     temp = *hs;
     padlen = 16 - hs->count;  /** 1..16 **/
     for(i=0; i<padlen; i++) {