Use jdk PBE - Java Security

Java examples for Security:Key

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Description

Use jdk PBE

Demo Code


import java.security.Key;
import java.security.SecureRandom;

import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;

import org.apache.commons.codec.binary.Base64;

public class ImoocPBE {

    private static String src = "imooc security pbe";

    public static void main(String[] args) {
        jdkPBE();/* ww w  . j  ava  2s .  c  o m*/
    }

    public static void jdkPBE() {
        try {
            SecureRandom random = new SecureRandom();
            byte[] salt = random.generateSeed(8);

            String password = "imooc";
            PBEKeySpec pbeKeySpec = new PBEKeySpec(password.toCharArray());
            SecretKeyFactory factory = SecretKeyFactory
                    .getInstance("PBEWITHMD5andDES");
            Key key = factory.generateSecret(pbeKeySpec);

            PBEParameterSpec pbeParameterSpec = new PBEParameterSpec(salt,
                    100);
            Cipher cipher = Cipher.getInstance("PBEWITHMD5andDES");
            cipher.init(Cipher.ENCRYPT_MODE, key, pbeParameterSpec);
            byte[] result = cipher.doFinal(src.getBytes());
            System.out.println("jdk pbe encrypt : "
                    + Base64.encodeBase64String(result));

            cipher.init(Cipher.DECRYPT_MODE, key, pbeParameterSpec);
            result = cipher.doFinal(result);
            System.out.println("jdk pbe decrypt : " + new String(result));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

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