verify vchPubKey matches calculated public key unless fSkipCheck is set

src/key.cpp

@@ -421,6 +421,12 @@ bool CKey::Load(CPrivKey &privkey, CPubKey &vchPubKey, bool fSkipCheck=false) {
     fCompressed = vchPubKey.IsCompressed();
     fValid = true;
     
+    if (fSkipCheck)
+        return true;
+    
+    if (GetPubKey() != vchPubKey)
+        return false;
+    
     return true;
 }