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diff --git a/src/org/apache/commons/codec/binary/Hex.java b/src/org/apache/commons/codec/binary/Hex.java
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+++ b/src/org/apache/commons/codec/binary/Hex.java
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+/*
+ * Copyright 2001-2004 The Apache Software Foundation.
+ * 
+ * Licensed 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.
+ */ 
+
+package org.apache.commons.codec.binary;
+
+import org.apache.commons.codec.BinaryDecoder;
+import org.apache.commons.codec.BinaryEncoder;
+import org.apache.commons.codec.DecoderException;
+import org.apache.commons.codec.EncoderException;
+
+/**
+ * Hex encoder and decoder.
+ * 
+ * @since 1.1
+ * @author Apache Software Foundation
+ * @version $Id: Hex.java,v 1.13 2004/04/18 18:22:33 ggregory Exp $
+ */
+public class Hex implements BinaryEncoder, BinaryDecoder {
+
+    /** 
+     * Used building output as Hex 
+     */
+    private static final char[] DIGITS = {
+        '0', '1', '2', '3', '4', '5', '6', '7',
+           '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'
+    };
+
+    /**
+     * Converts an array of characters representing hexidecimal values into an
+     * array of bytes of those same values. The returned array will be half the
+     * length of the passed array, as it takes two characters to represent any
+     * given byte. An exception is thrown if the passed char array has an odd
+     * number of elements.
+     * 
+     * @param data An array of characters containing hexidecimal digits
+     * @return A byte array containing binary data decoded from
+     *         the supplied char array.
+     * @throws DecoderException Thrown if an odd number or illegal of characters 
+     *         is supplied
+     */
+    public static byte[] decodeHex(char[] data) throws DecoderException {
+
+        int len = data.length;
+
+        if ((len & 0x01) != 0) {
+            throw new DecoderException("Odd number of characters.");
+        }
+
+        byte[] out = new byte[len >> 1];
+
+        // two characters form the hex value.
+        for (int i = 0, j = 0; j < len; i++) {
+            int f = toDigit(data[j], j) << 4;
+            j++;
+            f = f | toDigit(data[j], j);
+            j++;
+            out[i] = (byte) (f & 0xFF);
+        }
+
+        return out;
+    }
+
+    /**
+     * Converts a hexadecimal character to an integer.
+     *  
+     * @param ch A character to convert to an integer digit
+     * @param index The index of the character in the source
+     * @return An integer
+     * @throws DecoderException Thrown if ch is an illegal hex character
+     */
+    protected static int toDigit(char ch, int index) throws DecoderException {
+        int digit = Character.digit(ch, 16);
+        if (digit == -1) {
+            throw new DecoderException("Illegal hexadecimal charcter " + ch + " at index " + index);
+        }
+        return digit;
+    }
+
+    /**
+     * Converts an array of bytes into an array of characters representing the hexidecimal values of each byte in order.
+     * The returned array will be double the length of the passed array, as it takes two characters to represent any
+     * given byte.
+     * 
+     * @param data
+     *                  a byte[] to convert to Hex characters
+     * @return A char[] containing hexidecimal characters
+     */
+    public static char[] encodeHex(byte[] data) {
+
+        int l = data.length;
+
+           char[] out = new char[l << 1];
+
+           // two characters form the hex value.
+           for (int i = 0, j = 0; i < l; i++) {
+               out[j++] = DIGITS[(0xF0 & data[i]) >>> 4 ];
+               out[j++] = DIGITS[ 0x0F & data[i] ];
+           }
+
+           return out;
+    }
+    
+    /**
+     * Converts an array of character bytes representing hexidecimal values into an
+     * array of bytes of those same values. The returned array will be half the
+     * length of the passed array, as it takes two characters to represent any
+     * given byte. An exception is thrown if the passed char array has an odd
+     * number of elements.
+     * 
+     * @param array An array of character bytes containing hexidecimal digits
+     * @return A byte array containing binary data decoded from
+     *         the supplied byte array (representing characters).
+     * @throws DecoderException Thrown if an odd number of characters is supplied
+     *                   to this function
+     * @see #decodeHex(char[])
+     */
+    public byte[] decode(byte[] array) throws DecoderException {
+        return decodeHex(new String(array).toCharArray());
+    }
+    
+    /**
+     * Converts a String or an array of character bytes representing hexidecimal values into an
+     * array of bytes of those same values. The returned array will be half the
+     * length of the passed String or array, as it takes two characters to represent any
+     * given byte. An exception is thrown if the passed char array has an odd
+     * number of elements.
+     * 
+     * @param object A String or, an array of character bytes containing hexidecimal digits
+     * @return A byte array containing binary data decoded from
+     *         the supplied byte array (representing characters).
+     * @throws DecoderException Thrown if an odd number of characters is supplied
+     *                   to this function or the object is not a String or char[]
+     * @see #decodeHex(char[])
+     */
+    public Object decode(Object object) throws DecoderException {
+        try {
+            char[] charArray = object instanceof String ? ((String) object).toCharArray() : (char[]) object;
+            return decodeHex(charArray);
+        } catch (ClassCastException e) {
+            throw new DecoderException(e.getMessage());
+        }
+    }
+    
+    /**
+     * Converts an array of bytes into an array of bytes for the characters representing the
+     * hexidecimal values of each byte in order. The returned array will be
+     * double the length of the passed array, as it takes two characters to
+     * represent any given byte.
+     *
+     * @param array a byte[] to convert to Hex characters
+     * @return A byte[] containing the bytes of the hexidecimal characters
+     * @see #encodeHex(byte[])
+     */
+    public byte[] encode(byte[] array) {
+        return new String(encodeHex(array)).getBytes();
+    }
+
+    /**
+     * Converts a String or an array of bytes into an array of characters representing the
+     * hexidecimal values of each byte in order. The returned array will be
+     * double the length of the passed String or array, as it takes two characters to
+     * represent any given byte.
+     *
+     * @param object a String, or byte[] to convert to Hex characters
+     * @return A char[] containing hexidecimal characters
+     * @throws EncoderException Thrown if the given object is not a String or byte[]
+     * @see #encodeHex(byte[])
+     */
+    public Object encode(Object object) throws EncoderException {    
+        try {
+            byte[] byteArray = object instanceof String ? ((String) object).getBytes() : (byte[]) object;
+            return encodeHex(byteArray);
+        } catch (ClassCastException e) {
+            throw new EncoderException(e.getMessage());
+        }
+    }
+
+}
+