added API for random number generators, served through credential factory

ported randomizer_t to a rng_t on top of /dev/(u)random (plugin random)

1 files changed, 62 insertions, 0 deletions

diff --git a/src/libstrongswan/plugins/random/random_plugin.c b/src/libstrongswan/plugins/random/random_plugin.c
new file mode 100644
index 000000000..3eff81ee0
--- /dev/null
+++ b/src/libstrongswan/plugins/random/random_plugin.c
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2008 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program 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 General Public License
+ * for more details.
+ *
+ * $Id$
+ */
+
+#include "random_plugin.h"
+
+#include <library.h>
+#include "random_rng.h"
+
+typedef struct private_random_plugin_t private_random_plugin_t;
+
+/**
+ * private data of random_plugin
+ */
+struct private_random_plugin_t {
+
+	/**
+	 * public functions
+	 */
+	random_plugin_t public;
+};
+
+/**
+ * Implementation of random_plugin_t.gmptroy
+ */
+static void destroy(private_random_plugin_t *this)
+{
+	lib->crypto->remove_rng(lib->crypto,
+							(rng_constructor_t)random_rng_create);
+	free(this);
+}
+
+/*
+ * see header file
+ */
+plugin_t *plugin_create()
+{
+	private_random_plugin_t *this = malloc_thing(private_random_plugin_t);
+	
+	this->public.plugin.destroy = (void(*)(plugin_t*))destroy;
+	
+	lib->crypto->add_rng(lib->crypto, RNG_STRONG, 
+						 (rng_constructor_t)random_rng_create);
+	lib->crypto->add_rng(lib->crypto, RNG_REAL, 
+						 (rng_constructor_t)random_rng_create);
+	
+	return &this->public.plugin;
+}
+