cadi/core/src/test/java/org/onap/aaf/cadi/test/JU_Base64.java

   1 /*******************************************************************************
   2  * ============LICENSE_START====================================================
   3  * * org.onap.aaf
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   5  * * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
   6  * * ===========================================================================
   7  * * Licensed under the Apache License, Version 2.0 (the "License");
   8  * * you may not use this file except in compliance with the License.
   9  * * You may obtain a copy of the License at
  10  * *
  11  *  *      http://www.apache.org/licenses/LICENSE-2.0
  12  * *
  13  *  * Unless required by applicable law or agreed to in writing, software
  14  * * distributed under the License is distributed on an "AS IS" BASIS,
  15  * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * * See the License for the specific language governing permissions and
  17  * * limitations under the License.
  18  * * ============LICENSE_END====================================================
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  21  ******************************************************************************/
  22 package org.onap.aaf.cadi.test;
  23
  24 import static org.junit.Assert.*;
  25 import static org.hamcrest.CoreMatchers.*;
  26
  27 import java.io.ByteArrayInputStream;
  28 import java.io.ByteArrayOutputStream;
  29 import java.io.IOException;
  30 import java.security.SecureRandom;
  31
  32 import org.junit.Test;
  33 import org.onap.aaf.cadi.Symm;
  34 import org.onap.aaf.cadi.config.Config;
  35
  36 public class JU_Base64 {
  37         private static final String encoding = "Man is distinguished, not only by his reason, but by this singular " +
  38                         "passion from other animals, which is a lust of the mind, that by a " +
  39                         "perseverance of delight in the continued and indefatigable generation of " +
  40                         "knowledge, exceeds the short vehemence of any carnal pleasure.";
  41
  42         private static final String expected =
  43                         "TWFuIGlzIGRpc3Rpbmd1aXNoZWQsIG5vdCBvbmx5IGJ5IGhpcyByZWFzb24sIGJ1dCBieSB0aGlz\n" +
  44                         "IHNpbmd1bGFyIHBhc3Npb24gZnJvbSBvdGhlciBhbmltYWxzLCB3aGljaCBpcyBhIGx1c3Qgb2Yg\n" +
  45                         "dGhlIG1pbmQsIHRoYXQgYnkgYSBwZXJzZXZlcmFuY2Ugb2YgZGVsaWdodCBpbiB0aGUgY29udGlu\n" +
  46                         "dWVkIGFuZCBpbmRlZmF0aWdhYmxlIGdlbmVyYXRpb24gb2Yga25vd2xlZGdlLCBleGNlZWRzIHRo\n" +
  47                         "ZSBzaG9ydCB2ZWhlbWVuY2Ugb2YgYW55IGNhcm5hbCBwbGVhc3VyZS4=";
  48
  49         @Test
  50         public void test() throws Exception {
  51                 // Test with different Padding
  52                 assertEncoded("leas",     "bGVhcw==");
  53                 assertEncoded("leasu",    "bGVhc3U=");
  54                 assertEncoded("leasur",   "bGVhc3Vy");
  55                 assertEncoded("leasure",  "bGVhc3VyZQ==");
  56                 assertEncoded("leasure.", "bGVhc3VyZS4=");
  57
  58                 // Test with line ends
  59                 assertEncoded(encoding, expected);
  60         }
  61
  62         @Test
  63         public void symmetric() throws IOException {
  64                 String symmetric = new String(Symm.keygen());
  65                 Symm bsym = Symm.obtain(symmetric);
  66                 String result = bsym.encode(encoding);
  67                 assertThat(bsym.decode(result), is(encoding));
  68
  69                 char[] manipulate = symmetric.toCharArray();
  70                 int spot = new SecureRandom().nextInt(manipulate.length);
  71                 manipulate[spot]|=0xFF;
  72                 String newsymmetric = new String(manipulate);
  73                 assertThat(symmetric, is(not(newsymmetric)));
  74                 try {
  75                         bsym = Symm.obtain(newsymmetric);
  76                         result = bsym.decode(result);
  77                         assertThat(result, is(encoding));
  78                 } catch (IOException e) {
  79                         // this is what we want to see if key wrong
  80                 }
  81         }
  82
  83         private void assertEncoded(String toEncode, String expected) throws IOException {
  84                 String result = Symm.base64.encode(toEncode);
  85                 assertThat(result, is(expected));
  86                 ByteArrayOutputStream baos = new ByteArrayOutputStream();
  87                 Symm.base64.decode(new ByteArrayInputStream(result.getBytes()), baos);
  88                 result = baos.toString(Config.UTF_8);
  89                 assertThat(result, is(toEncode));
  90         }
  91
  92 }