package org.apache.archiva.checksum;
   
   /*
    * 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.
   */
  
  import javax.xml.bind.DatatypeConverter;
  
  /**
   * Hex - simple hex conversions. 
   *
   *
   */
  public class Hex
  {
  
      public static String encode( byte[] data )
      {
          try
          {
              return DatatypeConverter.printHexBinary( data ).trim( ).toLowerCase( );
          } catch (IllegalArgumentException e) {
              return "";
          }
      }
  
      public static String encode( String raw )
      {
          return encode( raw.getBytes() );
      }
  
      public static byte[] decode( String data ) {
          try
          {
              return DatatypeConverter.parseHexBinary( data.trim( ) );
          } catch (IllegalArgumentException e) {
              return new byte[0];
          }
      }
  }