Mercurial > hg > Members > kono > jpf-core

annotate src/classes/java/security/MessageDigest.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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12 * Unless required by applicable law or agreed to in writing, software
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18
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19 package java.security;
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20
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21 /**
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22 * forwarding implementation of MessageDigest.
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23 * <2do> only partially implemented (as required by serialization)
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24 */
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25 public class MessageDigest extends MessageDigestSpi {
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26
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27 String algorithm;
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28 int id; // set by native peer
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29
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30 private native int init0 (String algorithm);
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31
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32 protected MessageDigest (String algorithm) throws NoSuchAlgorithmException {
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33 if (!algorithm.equalsIgnoreCase("SHA") && !algorithm.equalsIgnoreCase("MD5")){
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34 throw new NoSuchAlgorithmException("unknown algorithm: " + algorithm);
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35 }
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36
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37 this.algorithm = algorithm;
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38 id = init0(algorithm);
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39 }
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40
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41 public static MessageDigest getInstance (String algorithm) throws NoSuchAlgorithmException {
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42 return new MessageDigest(algorithm); // keep it simple
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43 }
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44
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45 public native byte[] digest (byte[] input);
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46
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47 public native byte[] digest ();
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48
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49 public native void update(byte[] input);
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50
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51 @Override
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52 protected native void finalize(); // to clean up
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53
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54 // those are required by the compiler, but never used since we forward
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55 // all public methods
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56 @Override
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57 protected native byte[] engineDigest ();
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58
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59 @Override
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60 protected native void engineReset ();
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61
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62 @Override
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63 protected native void engineUpdate (byte input);
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64
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65 @Override
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66 protected native void engineUpdate (byte[] input, int offset, int len);
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67
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68 }