diff --git a/src/helma/util/Base64.java b/src/helma/util/Base64.java
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+//////////////////////license & copyright header/////////////////////////
+//                                                                     //
+//    Base64 - encode/decode data using the Base64 encoding scheme     //
+//                                                                     //
+//                Copyright (c) 1998 by Kevin Kelley                   //
+//                                                                     //
+// This library is free software; you can redistribute it and/or       //
+// modify it under the terms of the GNU Lesser General Public          //
+// License as published by the Free Software Foundation; either        //
+// version 2.1 of the License, or (at your option) any later version.  //
+//                                                                     //
+// This library is distributed in the hope that it will be useful,     //
+// but WITHOUT ANY WARRANTY; without even the implied warranty of      //
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the       //
+// GNU Lesser General Public License for more details.                 //
+//                                                                     //
+// You should have received a copy of the GNU Lesser General Public    //
+// License along with this library; if not, write to the Free Software //
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA           //
+// 02111-1307, USA, or contact the author:                             //
+//                                                                     //
+// Kevin Kelley <kelley@ruralnet.net> - 30718 Rd. 28, La Junta, CO,    //
+// 81050  USA.                                                         //
+//                                                                     //
+////////////////////end license & copyright header///////////////////////
+
+package helma.util;
+
+import java.io.*;       // needed only for main() method.
+
+
+/**
+*   Provides encoding of raw bytes to base64-encoded characters, and
+*  decoding of base64 characters to raw bytes.
+*
+* @author Kevin Kelley (kelley@ruralnet.net)
+* @version 1.3
+* @date 06 August 1998
+* @modified 14 February 2000
+* @modified 22 September 2000
+*/
+public class Base64 {
+
+/**
+* returns an array of base64-encoded characters to represent the
+* passed data array.
+*
+* @param data the array of bytes to encode
+* @return base64-coded character array.
+*/
+static public char[] encode(byte[] data)
+{
+    char[] out = new char[((data.length + 2) / 3) * 4];
+
+    //
+    // 3 bytes encode to 4 chars.  Output is always an even
+    // multiple of 4 characters.
+    //
+    for (int i=0, index=0; i<data.length; i+=3, index+=4) {
+        boolean quad = false;
+        boolean trip = false;
+
+        int val = (0xFF & (int) data[i]);
+        val <<= 8;
+        if ((i+1) < data.length) {
+            val |= (0xFF & (int) data[i+1]);
+            trip = true;
+        }
+        val <<= 8;
+        if ((i+2) < data.length) {
+            val |= (0xFF & (int) data[i+2]);
+            quad = true;
+        }
+        out[index+3] = alphabet[(quad? (val & 0x3F): 64)];
+        val >>= 6;
+        out[index+2] = alphabet[(trip? (val & 0x3F): 64)];
+        val >>= 6;
+        out[index+1] = alphabet[val & 0x3F];
+        val >>= 6;
+        out[index+0] = alphabet[val & 0x3F];
+    }
+    return out;
+}
+
+  /**
+   * Decodes a BASE-64 encoded stream to recover the original
+   * data. White space before and after will be trimmed away,
+   * but no other manipulation of the input will be performed.
+   *
+   * As of version 1.2 this method will properly handle input
+   * containing junk characters (newlines and the like) rather
+   * than throwing an error. It does this by pre-parsing the
+   * input and generating from that a count of VALID input
+   * characters.
+   **/
+static public byte[] decode(char[] data)
+{
+    // as our input could contain non-BASE64 data (newlines,
+    // whitespace of any sort, whatever) we must first adjust
+    // our count of USABLE data so that...
+    // (a) we don't misallocate the output array, and
+    // (b) think that we miscalculated our data length
+    //     just because of extraneous throw-away junk
+
+    int tempLen = data.length;
+    for( int ix=0; ix<data.length; ix++ )
+    {
+        if( (data[ix] > 255) || codes[ data[ix] ] < 0 )
+            --tempLen;  // ignore non-valid chars and padding
+    }
+    // calculate required length:
+    //  -- 3 bytes for every 4 valid base64 chars
+    //  -- plus 2 bytes if there are 3 extra base64 chars,
+    //     or plus 1 byte if there are 2 extra.
+
+    int len = (tempLen / 4) * 3;
+    if ((tempLen % 4) == 3) len += 2;
+    if ((tempLen % 4) == 2) len += 1;
+
+    byte[] out = new byte[len];
+
+
+
+    int shift = 0;   // # of excess bits stored in accum
+    int accum = 0;   // excess bits
+    int index = 0;
+
+    // we now go through the entire array (NOT using the 'tempLen' value)
+    for (int ix=0; ix<data.length; ix++)
+    {
+        int value = (data[ix]>255)? -1: codes[ data[ix] ];
+
+        if ( value >= 0 )           // skip over non-code
+        {
+            accum <<= 6;            // bits shift up by 6 each time thru
+            shift += 6;             // loop, with new bits being put in
+            accum |= value;         // at the bottom.
+            if ( shift >= 8 )       // whenever there are 8 or more shifted in,
+            {
+                shift -= 8;         // write them out (from the top, leaving any
+                out[index++] =      // excess at the bottom for next iteration.
+                    (byte) ((accum >> shift) & 0xff);
+            }
+        }
+        // we will also have skipped processing a padding null byte ('=') here;
+        // these are used ONLY for padding to an even length and do not legally
+        // occur as encoded data. for this reason we can ignore the fact that
+        // no index++ operation occurs in that special case: the out[] array is
+        // initialized to all-zero bytes to start with and that works to our
+        // advantage in this combination.
+    }
+
+    // if there is STILL something wrong we just have to throw up now!
+    if( index != out.length)
+    {
+        throw new Error("Miscalculated data length (wrote " + index + " instead of " + out.length + ")");
+    }
+
+    return out;
+}
+
+
+//
+// code characters for values 0..63
+//
+static private char[] alphabet =
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="
+        .toCharArray();
+
+//
+// lookup table for converting base64 characters to value in range 0..63
+//
+static private byte[] codes = new byte[256];
+static {
+    for (int i=0; i<256; i++) codes[i] = -1;
+    for (int i = 'A'; i <= 'Z'; i++) codes[i] = (byte)(     i - 'A');
+    for (int i = 'a'; i <= 'z'; i++) codes[i] = (byte)(26 + i - 'a');
+    for (int i = '0'; i <= '9'; i++) codes[i] = (byte)(52 + i - '0');
+    codes['+'] = 62;
+    codes['/'] = 63;
+}
+
+
+
+
+///////////////////////////////////////////////////
+// remainder (main method and helper functions) is
+// for testing purposes only, feel free to clip it.
+///////////////////////////////////////////////////
+
+public static void main(String[] args)
+{
+    boolean decode = false;
+
+    if (args.length == 0) {
+        System.out.println("usage:  java Base64 [-d[ecode]] filename");
+        System.exit(0);
+    }
+    for (int i=0; i<args.length; i++) {
+        if ("-decode".equalsIgnoreCase(args[i])) decode = true;
+        else if ("-d".equalsIgnoreCase(args[i])) decode = true;
+    }
+
+    String filename = args[args.length-1];
+    File file = new File(filename);
+    if (!file.exists()) {
+        System.out.println("Error:  file '" + filename + "' doesn't exist!");
+        System.exit(0);
+    }
+
+    if (decode)
+    {
+        char[] encoded = readChars(file);
+        byte[] decoded = decode(encoded);
+        writeBytes(file, decoded);
+    }
+    else
+    {
+        byte[] decoded = readBytes(file);
+        char[] encoded = encode(decoded);
+        writeChars(file, encoded);
+    }
+}
+
+private static byte[] readBytes(File file)
+{
+    ByteArrayOutputStream baos = new ByteArrayOutputStream();
+    try
+    {
+        InputStream fis = new FileInputStream(file);
+        InputStream is = new BufferedInputStream(fis);
+        int count = 0;
+        byte[] buf = new byte[16384];
+        while ((count=is.read(buf)) != -1) {
+            if (count > 0) baos.write(buf, 0, count);
+        }
+        is.close();
+    }
+    catch (Exception e) { e.printStackTrace(); }
+
+    return baos.toByteArray();
+}
+
+private static char[] readChars(File file)
+{
+    CharArrayWriter caw = new CharArrayWriter();
+    try
+    {
+        Reader fr = new FileReader(file);
+        Reader in = new BufferedReader(fr);
+        int count = 0;
+        char[] buf = new char[16384];
+        while ((count=in.read(buf)) != -1) {
+            if (count > 0) caw.write(buf, 0, count);
+        }
+        in.close();
+    }
+    catch (Exception e) { e.printStackTrace(); }
+
+    return caw.toCharArray();
+}
+
+private static void writeBytes(File file, byte[] data) {
+    try {
+        OutputStream fos = new FileOutputStream(file);
+        OutputStream os = new BufferedOutputStream(fos);
+        os.write(data);
+        os.close();
+    }
+    catch (Exception e) { e.printStackTrace(); }
+}
+
+private static void writeChars(File file, char[] data) {
+    try {
+        Writer fos = new FileWriter(file);
+        Writer os = new BufferedWriter(fos);
+        os.write(data);
+        os.close();
+    }
+    catch (Exception e) { e.printStackTrace(); }
+}
+///////////////////////////////////////////////////
+// end of test code.
+///////////////////////////////////////////////////
+
+}