--- /dev/null
+/* -*- mode:C; c-file-style: "bsd" -*- */
+/*
+ * Copyright (c) 2008, Yubico AB
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __YKPERS_H_INCLUDED__
+#define __YKPERS_H_INCLUDED__
+
+#include <ykcore.h>
+
+int ykp_AES_key_from_passphrase(CONFIG *cfg, const char *passphrase);
+int ykp_random_AES_key(CONFIG *cfg);
+int ykp_set_access_code(CONFIG *cfg, unsigned char *access_code);
+
+int ykp_write_config(CONFIG *cfg,
+ int (*writer)(const void *buf, size_t count,
+ void *userdata));
+int ykp_read_config(CONFIG *cfg,
+ int (*reader)(const void *buf, size_t count,
+ void *userdata));
+
+
+#endif // __YKPERS_H_INCLUDED__