Generates a SHA-1 hash of password and salt and returns it as hex-encoded string. - Android java.security

Android examples for java.security:Password

  1. HOME
  2. Android
  3. java.security
  4. Password

Description

Generates a SHA-1 hash of password and salt and returns it as hex-encoded string.

Demo Code

/*******************************************************************************
 * Copyright (C) 2012 Sven Nobis//from  w w w.jav  a  2  s.  c o  m
 * 
 * This file is part of AndroidRCCar (http://androidrccar.sven.to)
 * 
 * AndroidRCCar is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This source code is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *  
 * You should have received a copy of the GNU General Public License
 * along with this source code; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 ******************************************************************************/
//package com.java2s;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import android.util.Log;

public class Main {
    /**
     * Used as Log Tag.
     * @see Log
     */
    private static final String LOG_TAG = "CryptUtils";

    /**
     * Generates a SHA-1 hash of password and salt and returns it as hex-encoded string.
     * @param password the password to encrypt
     * @param salt random string that should be used to salt the password
     * @return hex-encoded string of hash
     */
    public static String encryptPassword(String password, String salt) {
        final String algorithm = "SHA-1";
        try {
            MessageDigest digester = MessageDigest.getInstance(algorithm);
            byte[] saltedPassword = (password + salt).getBytes();
            byte[] hash = digester.digest(saltedPassword);

            return String.format("%040x", new BigInteger(1, hash));
        } catch (NoSuchAlgorithmException e) {
            Log.e(LOG_TAG, "Algorithm " + algorithm, e);
            return null;
        }
    }
}

Related Tutorials