The Tor Browser: mobile/android/tests/background/junit3/src/healthreport/TestEnvironmentV1HashAppender.java@fc2d59ddac77 (annotated)

mobile/android/tests/background/junit3/src/healthreport/TestEnvironmentV1HashAppender.java@fc2d59ddac77 (annotated)

mobile/android/tests/background/junit3/src/healthreport/TestEnvironmentV1HashAppender.java

Wed, 31 Dec 2014 07:22:50 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:22:50 +0100
branch: TOR_BUG_3246
changeset 4: fc2d59ddac77
permissions: -rw-r--r--

Correct previous dual key logic pending first delivery installment.

 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 package org.mozilla.gecko.background.healthreport;
 import java.io.UnsupportedEncodingException;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.Arrays;
 import java.util.LinkedList;
 import org.mozilla.apache.commons.codec.binary.Base64;
 import org.mozilla.gecko.background.healthreport.EnvironmentV1.EnvironmentAppender;
 import org.mozilla.gecko.background.healthreport.EnvironmentV1.HashAppender;
 import org.mozilla.gecko.background.helpers.FakeProfileTestCase;
 import org.mozilla.gecko.sync.Utils;
 /**
  * Tests the HashAppender functionality. Note that these tests must be run on an Android
  * device because the SHA-1 native library needs to be loaded.
  */
 public class TestEnvironmentV1HashAppender extends FakeProfileTestCase {
   // input and expected values via: http://oauth.googlecode.com/svn/code/c/liboauth/src/sha1.c
   private final static String[] INPUTS = new String[] {
     "abc",
     "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
     "" // To be filled in below.
   };
   static {
     final String baseStr = "01234567";
     final int repetitions = 80;
     final StringBuilder builder = new StringBuilder(baseStr.length() * repetitions);
     for (int i = 0; i < 80; ++i) {
       builder.append(baseStr);
     }
     INPUTS[2] = builder.toString();
   }
   private final static String[] EXPECTEDS = new String[] {
     "a9993e364706816aba3e25717850c26c9cd0d89d",
     "84983e441c3bd26ebaae4aa1f95129e5e54670f1",
     "dea356a2cddd90c7a7ecedc5ebb563934f460452"
   };
   static {
     for (int i = 0; i < EXPECTEDS.length; ++i) {
       EXPECTEDS[i] = new Base64(-1, null, false).encodeAsString(Utils.hex2Byte(EXPECTEDS[i]));
     }
   }
   public void testSHA1Hashing() throws Exception {
     for (int i = 0; i < INPUTS.length; ++i) {
       final String input = INPUTS[i];
       final String expected = EXPECTEDS[i];
       final HashAppender appender = new HashAppender();
       addStringToAppenderInParts(appender, input);
       final String result = appender.toString();
       assertEquals(expected, result);
     }
   }
   /**
    * Tests to ensure output is the same as the former MessageDigest implementation (bug 959652).
    */
   public void testAgainstMessageDigestImpl() throws Exception {
     // List.add doesn't allow add(null) so we make a LinkedList here.
     final LinkedList<String> inputs = new LinkedList<String>(Arrays.asList(INPUTS));
     inputs.add(null);
     for (final String input : inputs) {
       final HashAppender hAppender = new HashAppender();
       final MessageDigestHashAppender mdAppender = new MessageDigestHashAppender();
       hAppender.append(input);
       mdAppender.append(input);
       final String hResult = hAppender.toString();
       final String mdResult = mdAppender.toString();
       assertEquals(mdResult, hResult);
     }
   }
   public void testIntegersAgainstMessageDigestImpl() throws Exception {
     final int[] INPUTS = {Integer.MIN_VALUE, -1337, -42, 0, 42, 1337, Integer.MAX_VALUE};
     for (final int input : INPUTS) {
       final HashAppender hAppender = new HashAppender();
       final MessageDigestHashAppender mdAppender = new MessageDigestHashAppender();
       hAppender.append(input);
       mdAppender.append(input);
       final String hResult = hAppender.toString();
       final String mdResult = mdAppender.toString();
       assertEquals(mdResult, hResult);
     }
   }
   private void addStringToAppenderInParts(final EnvironmentAppender appender, final String input) {
     int substrInd = 0;
     int substrLength = 1;
     while (substrInd < input.length()) {
       final int endInd = Math.min(substrInd + substrLength, input.length());
       appender.append(input.substring(substrInd, endInd));
       substrInd = endInd;
       ++substrLength;
     }
   }
   // --- COPY-PASTA'D CODE, FOR TESTING PURPOSES. ---
   public static class MessageDigestHashAppender extends EnvironmentAppender {
     final MessageDigest hasher;
     public MessageDigestHashAppender() throws NoSuchAlgorithmException {
       // Note to the security-minded reader: we deliberately use SHA-1 here, not
       // a stronger hash. These identifiers don't strictly need a cryptographic
       // hash function, because there is negligible value in attacking the hash.
       // We use SHA-1 because it's *shorter* -- the exact same reason that Git
       // chose SHA-1.
       hasher = MessageDigest.getInstance("SHA-1");
     }
     @Override
     public void append(String s) {
       try {
         hasher.update(((s == null) ? "null" : s).getBytes("UTF-8"));
       } catch (UnsupportedEncodingException e) {
         // This can never occur. Thanks, Java.
       }
     }
     @Override
     public void append(int profileCreation) {
       append(Integer.toString(profileCreation, 10));
     }
     @Override
     public String toString() {
       // We *could* use ASCII85… but the savings would be negated by the
       // inclusion of JSON-unsafe characters like double-quote.
       return new Base64(-1, null, false).encodeAsString(hasher.digest());
     }
   }
 }

The Tor Browser / annotate

mobile/android/tests/background/junit3/src/healthreport/TestEnvironmentV1HashAppender.java@fc2d59ddac77 (annotated)

mobile/android/tests/background/junit3/src/healthreport/TestEnvironmentV1HashAppender.java