adjust post auth support with TLS 1.3

Author: JacobBarthelmeh

src/tls13.c

@@ -8487,7 +8487,11 @@ int DoTls13Finished(WOLFSSL* ssl, const byte* input, word32* inOutIdx,
         }
         else
 #endif
-        if (!ssl->options.havePeerCert || !ssl->options.havePeerVerify) {
+        if (
+        #ifdef WOLFSSL_POST_HANDSHAKE_AUTH
+            !ssl->options.verifyPostHandshake &&
+        #endif
+            (!ssl->options.havePeerCert || !ssl->options.havePeerVerify)) {
             ret = NO_PEER_CERT; /* NO_PEER_VERIFY */
             WOLFSSL_MSG("TLS v1.3 client did not present peer cert");
             DoCertFatalAlert(ssl, ret);
@@ -9961,6 +9965,9 @@ static int SanityCheckTls13MsgReceived(WOLFSSL* ssl, byte type)
                  * no certificate available.
                  */
                 if (ssl->options.verifyPeer &&
+                #ifdef WOLFSSL_POST_HANDSHAKE_AUTH
+                    !ssl->options.verifyPostHandshake &&
+                #endif
                                            !ssl->msgsReceived.got_certificate) {
                     WOLFSSL_MSG("Finished received out of order - "
                                 "missing Certificate message");