Android Hash Code Calculate hash(char[] pin, byte[] salt)

Description

hash

Declaration

private static byte[] hash(char[] pin, byte[] salt)
            throws NoSuchAlgorithmException, InvalidKeySpecException 

Method Source Code

//package com.java2s;

import java.security.NoSuchAlgorithmException;

import java.security.spec.InvalidKeySpecException;
import java.util.Arrays;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;

public class Main {
    private static final int ROUNDS = 100;
    private static final int KEY_LEN = 256;
    private static final String KEY_ALGORITHM = "PBKDF2WithHmacSHA1";

    private static byte[] hash(char[] pin, byte[] salt)
            throws NoSuchAlgorithmException, InvalidKeySpecException {
        PBEKeySpec spec = new PBEKeySpec(pin, salt, ROUNDS, KEY_LEN);
        Arrays.fill(pin, Character.MIN_VALUE);
        try {//from   w  w  w.  j  a  v  a  2 s.  c  om
            SecretKeyFactory skf = SecretKeyFactory
                    .getInstance(KEY_ALGORITHM);
            return skf.generateSecret(spec).getEncoded();
        } finally {
            spec.clearPassword();
        }
    }
}

Related

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2. hash(String input, String algorithm)
3. hash(String password)
4. hash(String s, String algorithm)
5. hash(int seed, Object o)
6. hash(int seed, boolean x)
7. hash(int seed, int x)
8. hash2jsonBytes(Map hash)