handshake: added basic support for TLS 1.3 handshake in client side

That does not include support for client certificates as it
requires extension handling improvements in order for extensions
to be context sensitive (now they cannot distinguish whether the
parsing routine is called during client hello or certificate request
reading)

This does not include proper parsing of extensions present in
the certificate message.

Signed-off-by: Nikos Mavrogiannopoulos <nmav@redhat.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/lib/tls13-sig.h b/lib/tls13-sig.h
new file mode 100644
index 0000000000..b82dbc91b8
--- /dev/null
+++ b/lib/tls13-sig.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2017 Red Hat, Inc.
+ *
+ * Author: Nikos Mavrogiannopoulos
+ *
+ * This file is part of GnuTLS.
+ *
+ * The GnuTLS is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+#ifndef _TLS13_SIG_H
+# define _TLS13_SIG_H
+
+#include "gnutls_int.h"
+
+int
+_gnutls13_handshake_verify_data(gnutls_session_t session,
+			        unsigned verify_flags,
+			        gnutls_pcert_st *cert,
+			        const gnutls_datum_t *context,
+			        const gnutls_datum_t *signature,
+			        const gnutls_sign_entry_st *se);
+
+#endif