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diff --git a/include/yaz/base64.h b/include/yaz/base64.h
new file mode 100644
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+++ b/include/yaz/base64.h
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+/* This file is part of the YAZ toolkit.
+ * Copyright (C) 1995-2011 Index Data.
+ * 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.
+ *     * Neither the name of Index Data 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 REGENTS 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 REGENTS AND 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.
+ */
+
+/**
+ * \file base64.h
+ * \brief Header for Base64 utilities
+ */
+
+#ifndef YAZ_BASE64_H
+#define YAZ_BASE64_H
+
+#include <yaz/yconfig.h>
+ 
+YAZ_BEGIN_CDECL
+
+/** \brief encodes Base64 string
+    \param in input string
+    \param out resulting Base64 string
+
+    The out buffer should at least be of size:
+
+    (strlen(in)*8) / 6 + 12
+*/
+YAZ_EXPORT
+void yaz_base64encode(const char *in, char *out);
+
+/** \brief decodes Base64 string
+    \param in input Base64 encoded string
+    \param out result string
+    \retval 0 OK
+    \retval -1 invalid character
+
+    The out buffer should at least be of size:
+
+    strlen(in)
+*/
+YAZ_EXPORT
+int yaz_base64decode(const char *in, char *out);
+
+YAZ_END_CDECL
+
+#endif
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+