Java Key Create getKey(String salt, String password)

Description

get Key

License

Open Source License

Declaration

private static SecretKey getKey(String salt, String password) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.security.NoSuchAlgorithmException;

import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;

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

public class Main {
    private static SecretKey getKey(String salt, String password) {
        try {/*from w  w  w .  j a v  a2  s  . c o m*/
            // https://tools.ietf.org/html/rfc2898
            // sha1 with 1000 iterations and 256 bits is good enough here http://stackoverflow.com/questions/6126061/pbekeyspec-what-do-the-iterationcount-and-keylength-parameters-influence
            SecretKeyFactory factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
            KeySpec spec = new PBEKeySpec(password.toCharArray(), salt.getBytes(), 1000, 256);
            SecretKey tmp = factory.generateSecret(spec);
            return new SecretKeySpec(tmp.getEncoded(), "AES");
        } catch (NoSuchAlgorithmException | InvalidKeySpecException e) {
            throw new IllegalStateException("cannot create key: " + e.getMessage(), e);
        }
    }
}

Related

1. getKey(KeyStore keyStore, String password, String orgName)
2. getKey(KeyStore ks, String alias, String pass)
3. getKey(Object obj)
4. getKey(String keyString)
5. getKey(String keyString)
6. getKey(String siteSecret)
7. getKeyedDigest(String strSrc, String key)
8. getKeyExchangeCipher()
9. getKeyFactory()