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diff --git a/include/apr_base64.h b/include/apr_base64.h
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+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * The apr_vsnprintf/apr_snprintf functions are based on, and used with the
+ * permission of, the  SIO stdio-replacement strx_* functions by Panos
+ * Tsirigotis <panos@alumni.cs.colorado.edu> for xinetd.
+ */
+
+/**
+ * @file apr_base64.h
+ * @brief APR-UTIL Base64 Encoding
+ */
+#ifndef APR_BASE64_H
+#define APR_BASE64_H
+
+#include "apu.h"
+#include "apr_general.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup APR_Util_Base64 Base64 Encoding
+ * @ingroup APR_Util
+ * @{
+ */
+
+/* Simple BASE64 encode/decode functions.
+ * 
+ * As we might encode binary strings, hence we require the length of
+ * the incoming plain source. And return the length of what we decoded.
+ *
+ * The decoding function takes any non valid char (i.e. whitespace, \0
+ * or anything non A-Z,0-9 etc as terminal.
+ * 
+ * plain strings/binary sequences are not assumed '\0' terminated. Encoded
+ * strings are neither. But probably should.
+ *
+ */
+
+/**
+ * Given the length of an un-encoded string, get the length of the
+ * encoded string.
+ * @param len the length of an unencoded string.
+ * @return the length of the string after it is encoded, including the
+ * trailing \0
+ */ 
+APU_DECLARE(int) apr_base64_encode_len(int len);
+
+/**
+ * Encode a text string using base64encoding.
+ * @param coded_dst The destination string for the encoded string.
+ * @param plain_src The original string in plain text
+ * @param len_plain_src The length of the plain text string
+ * @return the length of the encoded string
+ */ 
+APU_DECLARE(int) apr_base64_encode(char * coded_dst, const char *plain_src, 
+                                 int len_plain_src);
+
+/**
+ * Encode an EBCDIC string using base64encoding.
+ * @param coded_dst The destination string for the encoded string.
+ * @param plain_src The original string in plain text
+ * @param len_plain_src The length of the plain text string
+ * @return the length of the encoded string
+ */ 
+APU_DECLARE(int) apr_base64_encode_binary(char * coded_dst, 
+                                        const unsigned char *plain_src,
+                                        int len_plain_src);
+
+/**
+ * Determine the maximum buffer length required to decode the plain text
+ * string given the encoded string.
+ * @param coded_src The encoded string
+ * @return the maximum required buffer length for the plain text string
+ */ 
+APU_DECLARE(int) apr_base64_decode_len(const char * coded_src);
+
+/**
+ * Decode a string to plain text
+ * @param plain_dst The destination string for the plain text
+ * @param coded_src The encoded string 
+ * @return the length of the plain text string
+ */ 
+APU_DECLARE(int) apr_base64_decode(char * plain_dst, const char *coded_src);
+
+/**
+ * Decode an EBCDIC string to plain text
+ * @param plain_dst The destination string for the plain text
+ * @param coded_src The encoded string 
+ * @return the length of the plain text string
+ */ 
+APU_DECLARE(int) apr_base64_decode_binary(unsigned char * plain_dst, 
+                                        const char *coded_src);
+
+/** @} */
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* !APR_BASE64_H */