纯java实现AES加解密

引用jdk中jce.jar模块AES加解密实现

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
 
public class Encryption
{
    public static void main(String args[]) throws Exception {
    	String data = "Test String啊啊啊啊啊啊啊啊啊啊啊啊啊啊";
    	String s=encrypt(data);
        System.out.println(s);
        System.out.println(desEncrypt(s));


    }
 
    public static String encrypt(String data) throws Exception {
        try {
            
            String key = "1234567812345678";
            String iv = "1234567812345678";
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            int blockSize = cipher.getBlockSize();
 
            byte[] dataBytes = data.getBytes();
            int plaintextLength = dataBytes.length;
//            if (plaintextLength % blockSize != 0) {
//                plaintextLength = plaintextLength + (blockSize - (plaintextLength % blockSize));
//            }
 
            byte[] plaintext = new byte[plaintextLength];
            System.arraycopy(dataBytes, 0, plaintext, 0, dataBytes.length);
             
            SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
            IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
 
            cipher.init(Cipher.ENCRYPT_MODE, keyspec, ivspec);
            byte[] encrypted = cipher.doFinal(plaintext);
 
            return new sun.misc.BASE64Encoder().encode(encrypted);
 
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
 
    public static String desEncrypt(String data) throws Exception {
        try
        {
            String key = "1234567812345678";
            String iv = "1234567812345678";
             
            byte[] encrypted1 = new BASE64Decoder().decodeBuffer(data);
             
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            SecretKeySpec keyspec = new SecretKeySpec(key.getBytes(), "AES");
            IvParameterSpec ivspec = new IvParameterSpec(iv.getBytes());
             
            cipher.init(Cipher.DECRYPT_MODE, keyspec, ivspec);
  
            byte[] original = cipher.doFinal(encrypted1);
            String originalString = new String(original);
            return originalString;
        }
        catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}