kdf: Add plugin that provides a default prf+ implementation

src/libstrongswan/plugins/kdf/kdf_plugin.c

@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2022 Tobias Brunner, codelabs GmbH
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "kdf_plugin.h"
+#include "kdf_prf_plus.h"
+
+#include <library.h>
+
+typedef struct private_kdf_plugin_t private_kdf_plugin_t;
+
+/**
+ * Private data
+ */
+struct private_kdf_plugin_t {
+
+	/**
+	 * Public interface
+	 */
+	kdf_plugin_t public;
+};
+
+METHOD(plugin_t, get_name, char*,
+	private_kdf_plugin_t *this)
+{
+	return "kdf";
+}
+
+METHOD(plugin_t, get_features, int,
+	private_kdf_plugin_t *this, plugin_feature_t *features[])
+{
+	static plugin_feature_t f[] = {
+		PLUGIN_REGISTER(KDF, kdf_prf_plus_create),
+			PLUGIN_PROVIDE(KDF, KDF_PRF_PLUS),
+				PLUGIN_SDEPEND(PRF, PRF_HMAC_SHA1),
+				PLUGIN_SDEPEND(PRF, PRF_HMAC_SHA2_256),
+				PLUGIN_SDEPEND(PRF, PRF_HMAC_SHA2_384),
+				PLUGIN_SDEPEND(PRF, PRF_HMAC_SHA2_512),
+				PLUGIN_SDEPEND(PRF, PRF_AES128_XCBC),
+				PLUGIN_SDEPEND(PRF, PRF_AES128_CMAC),
+	};
+	*features = f;
+	return countof(f);
+}
+
+METHOD(plugin_t, destroy, void,
+	private_kdf_plugin_t *this)
+{
+	free(this);
+}
+
+/*
+ * Described in header
+ */
+plugin_t *kdf_plugin_create()
+{
+	private_kdf_plugin_t *this;
+
+	INIT(this,
+		.public = {
+			.plugin = {
+				.get_name = _get_name,
+				.get_features = _get_features,
+				.destroy = _destroy,
+			},
+		},
+	);
+
+	return &this->public.plugin;
+}