1 /*
   2  * reserved comment block
   3  * DO NOT REMOVE OR ALTER!
   4  */
   5 /*
   6  * Copyright 1999-2008 The Apache Software Foundation.
   7  *
   8  *  Licensed under the Apache License, Version 2.0 (the "License");
   9  *  you may not use this file except in compliance with the License.
  10  *  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, software
  15  *  distributed under the License is distributed on an "AS IS" BASIS,
  16  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  *  See the License for the specific language governing permissions and
  18  *  limitations under the License.
  19  *
  20  */
  21 package com.sun.org.apache.xml.internal.security.utils;
  22 
  23 import java.io.ByteArrayOutputStream;
  24 
  25 import com.sun.org.apache.xml.internal.security.algorithms.MessageDigestAlgorithm;
  26 
  27 /**
  28  * @author raul
  29  *
  30  */
  31 public class DigesterOutputStream extends ByteArrayOutputStream {
  32     final MessageDigestAlgorithm mda;
  33     static java.util.logging.Logger log =
  34         java.util.logging.Logger.getLogger
  35         (DigesterOutputStream.class.getName());
  36 
  37     /**
  38      * @param mda
  39      */
  40     public DigesterOutputStream(MessageDigestAlgorithm mda) {
  41         this.mda=mda;
  42     }
  43 
  44     /** @inheritDoc */
  45     public void write(byte[] arg0) {
  46         write(arg0, 0, arg0.length);
  47     }
  48 
  49     /** @inheritDoc */
  50     public void write(int arg0) {
  51         mda.update((byte)arg0);
  52     }
  53 
  54     /** @inheritDoc */
  55     public void write(byte[] arg0, int arg1, int arg2) {
  56         if (log.isLoggable(java.util.logging.Level.FINE)) {
  57             log.log(java.util.logging.Level.FINE, "Pre-digested input:");
  58             StringBuffer sb = new StringBuffer(arg2);
  59             for (int i=arg1; i<(arg1+arg2); i++) {
  60                 sb.append((char) arg0[i]);
  61             }
  62             log.log(java.util.logging.Level.FINE, sb.toString());
  63         }
  64         mda.update(arg0, arg1, arg2);
  65     }
  66 
  67     /**
  68      * @return the digest value
  69      */
  70     public byte[] getDigestValue() {
  71          return mda.digest();
  72     }
  73 }