rs.htec.cms.cms_bulima.helper.Password.java Source code

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Here is the source code for rs.htec.cms.cms_bulima.helper.Password.java

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package rs.htec.cms.cms_bulima.helper;

import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import java.security.SecureRandom;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.commons.codec.binary.Base64;

public class Password {

    private static final int iterations = 5 * 1000;
    private static final int saltLen = 32;
    private static final int desiredKeyLen = 256;

    public static String getSaltedHash(String password) throws Exception {
        byte[] salt = SecureRandom.getInstance("SHA1PRNG").generateSeed(saltLen);
        return Base64.encodeBase64String(salt) + "$" + hash(password, salt);
    }

    public static boolean check(String password, String stored) throws Exception {
        String[] saltAndPass = stored.split("\\$");
        if (saltAndPass.length != 2) {
            throw new IllegalStateException("Password must be in format: 'salt$hash'");
        }
        String hashOfInput = hash(password, Base64.decodeBase64(saltAndPass[0]));
        return hashOfInput.equals(saltAndPass[1]);
    }

    private static String hash(String password, byte[] salt) throws Exception {
        if (password == null || password.length() == 0) {
            throw new IllegalArgumentException("Password must have at least one character");
        }
        SecretKeyFactory f = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1");
        SecretKey key = f.generateSecret(new PBEKeySpec(password.toCharArray(), salt, iterations, desiredKeyLen));
        return Base64.encodeBase64String(key.getEncoded());
    }
}