PBETest.java

package com.timliu.security.symmetric_encryption;

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.Hex;

public class PBETest {
	public static final String src = "pbe test";
	public static void main(String[] args) 
	{
		jdkPBE();

	}

	// 用jdk实现:
	public static void jdkPBE()
	{
		try 
		{
			// 初始化盐
			SecureRandom random = new SecureRandom();
			byte[] salt = random.generateSeed(8);
			
			// 口令与密钥
			String password = "timliu";
			PBEKeySpec pbeKeySpec = new PBEKeySpec(password.toCharArray()); 
			SecretKeyFactory factory = SecretKeyFactory.getInstance("PBEWITHMD5andDES");
			Key key = factory.generateSecret(pbeKeySpec);
			
									
			// 加密
			PBEParameterSpec pbeParameterSpac = new PBEParameterSpec(salt, 100);
			Cipher cipher = Cipher.getInstance("PBEWITHMD5andDES");
			cipher.init(Cipher.ENCRYPT_MODE, key, pbeParameterSpac);
			byte[] result = cipher.doFinal(src.getBytes());
			System.out.println("jdk pbe encrypt:" + Hex.encodeHexString(result));
			
			// 解密
			cipher.init(Cipher.DECRYPT_MODE, key, pbeParameterSpac);
			result = cipher.doFinal(result);
			System.out.println("jdk pbe decrypt:" + new String(result));
			
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	

}