title: IllegalAccessError with Android and BouncyCastle
body: <p>I am trying to implement a timestamp request as seen here:
  <a href="http://bouncy-castle.1462172.n4.nabble.com/Timestamp-request-and-response-td1558231.html" rel="nofollow">http://bouncy-castle.1462172.n4.nabble.com/Timestamp-request-and-response-td1558231.html</a>
  In j2se it works fine, but on android I get an IllegalAccessError.
  Logcat output :</p>
  
  <p>FATAL EXCEPTION: main</p>
  
  <pre><code>java.lang.IllegalAccessError: tried to access method org.bouncycastle.asn1.DERBoolean.&lt;init&gt;:(Z)V from class org.bouncycastle.tsp.TimeStampRequestGenerator
  at org.bouncycastle.tsp.TimeStampRequestGenerator.setCertReq(Unknown Source)
  at org.ats.ats.onCreate(ats.java:30)
  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
  at android.app.ActivityThread.access$2300(ActivityThread.java:125)
  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
  at android.os.Handler.dispatchMessage(Handler.java:99)
  at android.os.Looper.loop(Looper.java:123)
  at android.app.ActivityThread.main(ActivityThread.java:4627)
  at java.lang.reflect.Method.invokeNative(Native Method)
  at java.lang.reflect.Method.invoke(Method.java:521)
  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
  at dalvik.system.NativeStart.main(Native Method)
  
  W/ActivityManager(   59):   Force finishing activity org.ats/.ats
  </code></pre>
  
  <p>It is necessary for me to ask for the Certificate in the TSResponse.
  Android api is 2.2
  My code:</p>
  
  <pre><code>        TimeStampRequestGenerator reqgen = new TimeStampRequestGenerator();
          reqgen.setCertReq(true);
  
          MessageDigest messageDigest = MessageDigest.getInstance("SHA-1");
          messageDigest.update("messageImprint".getBytes());
          byte[] digest = messageDigest.digest();
          String ocspUrl = "http://egtstamp.egroup.hu:80/tsa";
          OutputStream out = null;
  
          TimeStampRequest req = reqgen.generate(TSPAlgorithms.SHA1, digest); 
          byte request[] = req.getEncoded(); 
  
          URL url = new URL(ocspUrl); 
          HttpURLConnection con = (HttpURLConnection) url.openConnection(); 
  
          con.setDoOutput(true); 
          con.setDoInput(true); 
          con.setRequestMethod("POST"); 
          con.setRequestProperty("Content-type", "application/timestamp-query"); 
  
          con.setRequestProperty("Content-length", String.valueOf(request.length)); 
          out = con.getOutputStream(); 
          out.write(request); 
          out.flush(); 
  </code></pre>