001    package org.apache.archiva.checksum;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one
005     * or more contributor license agreements.  See the NOTICE file
006     * distributed with this work for additional information
007     * regarding copyright ownership.  The ASF licenses this file
008     * to you under the Apache License, Version 2.0 (the
009     * "License"); you may not use this file except in compliance
010     * with the License.  You may obtain a copy of the License at
011     *
012     *   http://www.apache.org/licenses/LICENSE-2.0
013     *
014     * Unless required by applicable law or agreed to in writing,
015     * software distributed under the License is distributed on an
016     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017     * KIND, either express or implied.  See the License for the
018     * specific language governing permissions and limitations
019     * under the License.
020     */
021    
022    /**
023     * Hex - simple hex conversions. 
024     *
025     *
026     */
027    public class Hex
028    {
029        private static final byte[] DIGITS = "0123456789abcdef".getBytes();
030    
031        public static String encode( byte[] data )
032        {
033            int l = data.length;
034    
035            byte[] raw = new byte[l * 2];
036    
037            for ( int i = 0, j = 0; i < l; i++ )
038            {
039                raw[j++] = DIGITS[( 0xF0 & data[i] ) >>> 4];
040                raw[j++] = DIGITS[0x0F & data[i]];
041            }
042    
043            return new String( raw );
044        }
045    
046        public static String encode( String raw )
047        {
048            return encode( raw.getBytes() );
049        }
050    
051    }