1 files changed, 131 insertions, 0 deletions
diff --git a/lib/auth/anon.c b/lib/auth/anon.c
new file mode 100644
index 0000000..2fc2cd7
--- /dev/null
+++ b/lib/auth/anon.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2000-2012 Free Software Foundation, Inc.
+ * 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 <https://www.gnu.org/licenses/>
+ *
+ */
+
+/* This file contains the Anonymous Diffie-Hellman key exchange part of
+ * the anonymous authentication. The functions here are used in the
+ * handshake.
+ */
+
+#include "gnutls_int.h"
+
+#if defined(ENABLE_ANON) && defined(ENABLE_DHE)
+
+#include "auth.h"
+#include "errors.h"
+#include "dh.h"
+#include "auth/anon.h"
+#include "num.h"
+#include "mpi.h"
+#include <state.h>
+#include <auth/dh_common.h>
+
+static int gen_anon_server_kx(gnutls_session_t, gnutls_buffer_st *);
+static int proc_anon_client_kx(gnutls_session_t, uint8_t *, size_t);
+static int proc_anon_server_kx(gnutls_session_t, uint8_t *, size_t);
+
+const mod_auth_st anon_auth_struct = {
+	"ANON",
+	NULL,
+	NULL,
+	gen_anon_server_kx,
+	_gnutls_gen_dh_common_client_kx,	/* this can be shared */
+	NULL,
+	NULL,
+
+	NULL,
+	NULL,			/* certificate */
+	proc_anon_server_kx,
+	proc_anon_client_kx,
+	NULL,
+	NULL
+};
+
+static int
+gen_anon_server_kx(gnutls_session_t session, gnutls_buffer_st * data)
+{
+	int ret;
+	gnutls_anon_server_credentials_t cred;
+
+	cred = (gnutls_anon_server_credentials_t)
+	    _gnutls_get_cred(session, GNUTLS_CRD_ANON);
+	if (cred == NULL) {
+		gnutls_assert();
+		return GNUTLS_E_INSUFFICIENT_CREDENTIALS;
+	}
+
+	if ((ret =
+	     _gnutls_auth_info_init(session, GNUTLS_CRD_ANON,
+				   sizeof(anon_auth_info_st), 1)) < 0) {
+		gnutls_assert();
+		return ret;
+	}
+
+	ret = _gnutls_figure_dh_params(session, cred->dh_params, cred->params_func, cred->dh_sec_param);
+	if (ret < 0) {
+		return gnutls_assert_val(ret);
+	}
+
+	ret =
+	    _gnutls_dh_common_print_server_kx(session, data);
+	if (ret < 0) {
+		gnutls_assert();
+	}
+
+	return ret;
+}
+
+
+static int
+proc_anon_client_kx(gnutls_session_t session, uint8_t * data,
+		    size_t _data_size)
+{
+	return
+	    _gnutls_proc_dh_common_client_kx(session, data, _data_size, NULL);
+
+}
+
+int
+proc_anon_server_kx(gnutls_session_t session, uint8_t * data,
+		    size_t _data_size)
+{
+
+	int ret;
+
+	/* set auth_info */
+	if ((ret =
+	     _gnutls_auth_info_init(session, GNUTLS_CRD_ANON,
+				   sizeof(anon_auth_info_st), 1)) < 0) {
+		gnutls_assert();
+		return ret;
+	}
+
+	ret = _gnutls_proc_dh_common_server_kx(session, data, _data_size);
+	if (ret < 0) {
+		gnutls_assert();
+		return ret;
+	}
+
+	return 0;
+}
+
+#endif				/* ENABLE_ANON */