The Tor Browser / file revision

 /* This Source Code Form is subject to the terms of the Mozilla Public

  * License, v. 2.0. If a copy of the MPL was not distributed with this

  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

 package org.mozilla.gecko.background.nativecode;

 import java.security.GeneralSecurityException;

 import org.mozilla.gecko.AppConstants;

 import org.mozilla.gecko.mozglue.RobocopTarget;

 import android.util.Log;

 @RobocopTarget

 public class NativeCrypto {

   static {

     try {

       System.loadLibrary("mozglue");

     } catch (UnsatisfiedLinkError e) {

       Log.wtf("NativeCrypto", "Couldn't load mozglue. Trying /data/app-lib path.");

       try {

         System.load("/data/app-lib/" + AppConstants.ANDROID_PACKAGE_NAME + "/libmozglue.so");

       } catch (Throwable ee) {

           try {

             Log.wtf("NativeCrypto", "Couldn't load mozglue: " + ee + ". Trying /data/data path.");

             System.load("/data/data/" + AppConstants.ANDROID_PACKAGE_NAME + "/lib/libmozglue.so");

           } catch (UnsatisfiedLinkError eee) {

               Log.wtf("NativeCrypto", "Failed every attempt to load mozglue. Giving up.");

               throw new RuntimeException("Unable to load mozglue", eee);

           }

       }

     }

   }

   /**

    * Wrapper to perform PBKDF2-HMAC-SHA-256 in native code.

    */

   public native static byte[] pbkdf2SHA256(byte[] password, byte[] salt, int c, int dkLen)

       throws GeneralSecurityException;

   /**

    * Wrapper to perform SHA-1 in native code.

    */

   public native static byte[] sha1(byte[] str);

 }