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diff --git a/apps/include/netutils/base64.h b/apps/include/netutils/base64.h
new file mode 100644
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+++ b/apps/include/netutils/base64.h
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+/****************************************************************************
+ * apps/include/netutils/base64.h
+ *
+ * This file is part of the NuttX RTOS:
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Darcy Gong
+ *
+ * Reference:
+ *
+ *   Base64 encoding/decoding (RFC1341)
+ *   Copyright (c) 2005, Jouni Malinen <jkmaline@cc.hut.fi>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License version 2 as
+ *   published by the Free Software Foundation.
+ *
+ *   Alternatively, this software may be distributed under the terms of BSD
+ *   license.
+ *
+ *   See README and COPYING for more details.
+ *
+ * And is re-released under the NuttX modified BSD license:
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *   2. 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.
+ *   3. Neither the name of the Institute nor the names of its contributors
+ *      may be used to endorse or promote products derived from this software
+ *      without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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 __APPS_INCLUDE_NETUTILS_BASE64_H
+#define __APPS_INCLUDE_NETUTILS_BASE64_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifdef CONFIG_CODECS_BASE64
+unsigned char *base64_encode(const unsigned char *src, size_t len,
+                             unsigned char *dst, size_t *out_len);
+unsigned char *base64_decode(const unsigned char *src, size_t len,
+                             unsigned char *dst, size_t *out_len);
+unsigned char *base64w_encode(const unsigned char *src, size_t len,
+                              unsigned char *dst, size_t *out_len);
+unsigned char *base64w_decode(const unsigned char *src, size_t len,
+                              unsigned char *dst, size_t *out_len);
+#endif /* CONFIG_CODECS_BASE64 */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __APPS_INCLUDE_NETUTILS_BASE64_H */