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1   package org.apache.archiva.redback.integration.filter.authentication.digest;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   * http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  /**
23   * Hex
24   *
25   * @author <a href="mailto:joakim@erdfelt.com">Joakim Erdfelt</a>
26   *
27   */
28  public class Hex
29  {
30      private static final byte[] DIGITS = "0123456789abcdef".getBytes();
31  
32      public static String encode( byte[] data )
33      {
34          int l = data.length;
35  
36          byte[] raw = new byte[l * 2];
37  
38          for ( int i = 0, j = 0; i < l; i++ )
39          {
40              raw[j++] = DIGITS[( 0xF0 & data[i] ) >>> 4];
41              raw[j++] = DIGITS[0x0F & data[i]];
42          }
43  
44          return new String( raw );
45      }
46  
47      public static String encode( String raw )
48      {
49          return encode( raw.getBytes() );
50      }
51  }