hash And Salt Password - Java Security

Java examples for Security:Password

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Description

hash And Salt Password

Demo Code


//package com.java2s;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.Random;
import java.util.Base64;

public class Main {
    public static String hashAndSaltPassword(String password)
            throws NoSuchAlgorithmException {
        String salt = getSalt();//from   w  w w. j  ava  2s . c  o  m
        return hashPassword(password + salt);
    }

    public static String getSalt() {
        Random r = new SecureRandom();
        byte[] saltBytes = new byte[32];
        r.nextBytes(saltBytes);
        return Base64.getEncoder().encodeToString(saltBytes);
    }

    public static String hashPassword(String password)
            throws NoSuchAlgorithmException {
        MessageDigest md = MessageDigest.getInstance("SHA-256");
        md.reset();
        md.update(password.getBytes());
        byte[] mdArray = md.digest();
        StringBuilder sb = new StringBuilder(mdArray.length * 2);
        for (byte b : mdArray) {
            int v = b & 0xff;
            if (v < 16) {
                sb.append('0');
            }
            sb.append(Integer.toHexString(v));
        }
        return sb.toString();
    }
}

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