Coverage report

  %line %branch
org.apache.java.security.MessageDigest
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 1  
 package org.apache.java.security;
 2  
 
 3  
 /*
 4  
  * Copyright 2001-2005 The Apache Software Foundation.
 5  
  *
 6  
  * Licensed under the Apache License, Version 2.0 (the "License")
 7  
  * you may not use this file except in compliance with the License.
 8  
  * You may obtain a copy of the License at
 9  
  *
 10  
  *     http://www.apache.org/licenses/LICENSE-2.0
 11  
  *
 12  
  * Unless required by applicable law or agreed to in writing, software
 13  
  * distributed under the License is distributed on an "AS IS" BASIS,
 14  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 15  
  * See the License for the specific language governing permissions and
 16  
  * limitations under the License.
 17  
  */
 18  
 
 19  
 /**
 20  
  * This interface abstracts a message digest algorithm.
 21  
  *
 22  
  * <p><b>Note:</b> even if standard Java 1.1 APIs already provide a
 23  
  * message digest implementation, this class is used on those Java
 24  
  * runtime environments (like Kaffe) where the package
 25  
  * <code>java.security</code> is highly improbable to be found.
 26  
  *
 27  
  * @author <a href="mailto:mazzocchi@mbox.systemy.it">Stefano Mazzocchi</a>
 28  
  * @version $Id: MessageDigest.java 264148 2005-08-29 14:21:04Z henning $
 29  
  * @deprecated Use the java.security package.
 30  
  */
 31  
 public abstract class MessageDigest
 32  
 {
 33  
     /**
 34  
      * Creates the algorithm and reset its state.
 35  
      */
 36  
     public MessageDigest()
 37  0
     {
 38  0
         this.reset();
 39  0
     }
 40  
 
 41  
     /**
 42  
      * Append another block to the message.
 43  
      *
 44  
      * @param block A byte[].
 45  
      */
 46  
     public void append(byte[] block)
 47  
     {
 48  0
         this.append(block, 0, block.length);
 49  0
     }
 50  
 
 51  
     /**
 52  
      * Append another block of specified length to the message.
 53  
      *
 54  
      * @param block A byte[].
 55  
      * @param length An int.
 56  
      */
 57  
     public void append(byte[] block,
 58  
                        int length)
 59  
     {
 60  0
         this.append(block, 0, length);
 61  0
     }
 62  
 
 63  
     /**
 64  
      * Append another block of specified length to the message
 65  
      * starting at the given offset.
 66  
      *
 67  
      * @param block A byte[].
 68  
      * @param offset An int.
 69  
      * @param length An int.
 70  
      */
 71  
     public abstract void append(byte[] block,
 72  
                                 int offset,
 73  
                                 int length);
 74  
 
 75  
     /**
 76  
      * Appends a message block and return its message digest.
 77  
      *
 78  
      * @param block A byte[].
 79  
      * @return A byte[].
 80  
      */
 81  
     public byte[] digest(byte[] block)
 82  
     {
 83  0
         return this.digest(block, 0, block.length);
 84  
     }
 85  
 
 86  
     /**
 87  
      * Appends a message block with specified length and return its
 88  
      * message digest.
 89  
      *
 90  
      * @param block A byte[].
 91  
      * @param length An int.
 92  
      * @return A byte[].
 93  
      */
 94  
     public byte[] digest(byte[] block,
 95  
                          int length)
 96  
     {
 97  0
         return this.digest(block, 0, length);
 98  
     }
 99  
 
 100  
     /**
 101  
      * Appends a message block with specified length starting from the
 102  
      * given offset and return its message digest.
 103  
      *
 104  
      * @param block A byte[].
 105  
      * @param offset An int.
 106  
      * @param length An int.
 107  
      * @return A byte[].
 108  
      */
 109  
     public abstract byte[] digest(byte[] block,
 110  
                                   int offset,
 111  
                                   int length);
 112  
 
 113  
     /**
 114  
      * Resets the state of the class.  <b>Beware</b>: calling this
 115  
      * method erases all data previously inserted.
 116  
      */
 117  
     public abstract void reset();
 118  
 }

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