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.fxa;

 import java.io.UnsupportedEncodingException;

 import java.math.BigInteger;

 import java.security.NoSuchAlgorithmException;

 import org.json.simple.JSONObject;

 import org.mozilla.gecko.background.fxa.FxAccountClient10.CreateDelegate;

 import org.mozilla.gecko.sync.Utils;

 import org.mozilla.gecko.sync.net.SRPConstants;

 public class FxAccount10CreateDelegate implements CreateDelegate {

   protected final String     email;

   protected final String     mainSalt;

   protected final String     srpSalt;

   protected final BigInteger v;

   public FxAccount10CreateDelegate(String email, byte[] stretchedPWBytes, String mainSalt, String srpSalt) throws NoSuchAlgorithmException, UnsupportedEncodingException {

     this.email = email;

     this.mainSalt = mainSalt;

     this.srpSalt = srpSalt;

     byte[] srpSaltBytes = Utils.hex2Byte(srpSalt, FxAccountUtils.SALT_LENGTH_BYTES);

     this.v = FxAccountUtils.srpVerifierLowercaseV(email.getBytes("UTF-8"), stretchedPWBytes, srpSaltBytes, SRPConstants._2048.g, SRPConstants._2048.N);

   }

   @SuppressWarnings("unchecked")

   @Override

   public JSONObject getCreateBody() throws FxAccountClientException {

     final JSONObject body = new JSONObject();

     try {

       body.put("email", FxAccountUtils.bytes(email));

     } catch (UnsupportedEncodingException e) {

       throw new FxAccountClientException(e);

     }

     final JSONObject stretching = new JSONObject();

     stretching.put("type", "PBKDF2/scrypt/PBKDF2/v1");

     stretching.put("PBKDF2_rounds_1", 20000);

     stretching.put("scrypt_N", 65536);

     stretching.put("scrypt_r", 8);

     stretching.put("scrypt_p", 1);

     stretching.put("PBKDF2_rounds_2", 20000);

     stretching.put("salt", mainSalt);

     body.put("passwordStretching", stretching);

     final JSONObject srp = new JSONObject();

     srp.put("type", "SRP-6a/SHA256/2048/v1");

     srp.put("verifier", FxAccountUtils.hexModN(v, SRPConstants._2048.N));

     srp.put("salt", srpSalt);

     body.put("srp", srp);

     return body;

   }

 }