Android Key Create getKeyFromPassphrase(String passphrase, byte[] salt)

Description

get Key From Passphrase

License

Open Source License

Declaration

private static SecretKey getKeyFromPassphrase(String passphrase,
            byte[] salt) throws GeneralSecurityException 

Method Source Code

//package com.java2s;
/** /*from  w  w  w  . j a  v  a 2s. co m*/
 * Copyright (C) 2011 Whisper Systems
 * 
 * This program 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 program 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 program.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.security.GeneralSecurityException;

import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;

public class Main {
    private static SecretKey getKeyFromPassphrase(String passphrase,
            byte[] salt) throws GeneralSecurityException {
        PBEKeySpec keyspec = new PBEKeySpec(passphrase.toCharArray(), salt,
                100);
        SecretKeyFactory skf = SecretKeyFactory
                .getInstance("PBEWITHSHA1AND128BITAES-CBC-BC");
        return skf.generateSecret(keyspec);
    }
}

Related

1. generateKey(byte[] seed)
2. generateKey(char[] passphraseOrPin, byte[] salt)
3. generateKey(char[] passphraseOrPin, byte[] salt)
4. generateMacSecret()
5. getKey(String keyRule)
6. getKeyFromPassphrase(String passphrase, byte[] salt, int iterations)
7. createDESedeKeySpec(SecretKey key)
8. createSecretKey(byte[] rawkey)
9. generatePBEKey(char[] password, byte[] salt, String algorthm, int iterations, int keyLength)