botan: Add support for Ed25519 keys

src/libstrongswan/plugins/botan/botan_ed_public_key.h

@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2018 Tobias Brunner
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * 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.
+ */
+
+#ifndef BOTAN_ED_PUBLIC_KEY_H_
+#define BOTAN_ED_PUBLIC_KEY_H_
+
+#include <botan/ffi.h>
+
+#include <credentials/builder.h>
+#include <credentials/keys/public_key.h>
+
+#define ED25519_KEY_LEN 32
+
+/**
+ * Load an EdDSA public key by adopting a botan_pubkey_t object.
+ *
+ * @param key		public key object (adopted)
+ * @return			loaded key, NULL on failure
+ */
+public_key_t *botan_ed_public_key_adopt(botan_pubkey_t key);
+
+/**
+ * Load an EdDSA public key using Botan.
+ *
+ * @param type		type of the key, must be KEY_ED25519
+ * @param args		builder_part_t argument list
+ * @return 			loaded key, NULL on failure
+ */
+public_key_t *botan_ed_public_key_load(key_type_t type, va_list args);
+
+#endif /** BOTAN_ED_PUBLIC_KEY_H_ @}*/