AES/CBC/PKCS5Padding对称加密

 package unit;
 import javax.crypto.Cipher;
 import javax.crypto.spec.IvParameterSpec;
 import javax.crypto.spec.SecretKeySpec;

 import org.apache.commons.codec.binary.Base64;
 /**
  * AES/CBC/PKCS5Padding 对称加密
  * @author jia
  *
  */
 public class AES_CBC {

      private static final String ALGORITHM = "AES/CBC/PKCS5Padding";
         /**
          * 数据加密
          * @param srcData
          * @param key
          * @param iv
          * @return
          */
         public static String encrypt(String srcData,byte[] key,byte[] iv)
         {
             SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
             Cipher cipher;
             String encodeBase64String = null;
             try {
                 cipher = Cipher.getInstance(ALGORITHM);
                 cipher.init(Cipher.ENCRYPT_MODE, keySpec, new IvParameterSpec(iv));
                 byte[] encData = cipher.doFinal(srcData.getBytes());
                 encodeBase64String = Base64.encodeBase64String(encData);
             } catch (Exception e) {
                 e.printStackTrace();
             }
             return encodeBase64String;
         }

         /**
          * 数据解密
          * @param encDataStr
          * @param key
          * @param iv
          * @return
          */
         public static String decrypt(String encDataStr,byte[] key,byte[] iv)
         {
             byte[] encData = Base64.decodeBase64(encDataStr);
             SecretKeySpec keySpec = new SecretKeySpec(key, "AES");
             Cipher cipher;
             byte[] decbbdt = null;
             try {
                 cipher = Cipher.getInstance(ALGORITHM);
                 cipher.init(Cipher.DECRYPT_MODE, keySpec, new IvParameterSpec(iv));
                 decbbdt = cipher.doFinal(encData);
             } catch (Exception e) {
                 e.printStackTrace();
             }
             return new String(decbbdt);
         }

     public static void main(String[] args) throws Exception {
         String str = "fot4Ginq4iey7kLUUmA+dA==";
         byte[] s = Base64.decodeBase64(str);
         String s2 = "12345678ilkljklkjv";
         String iv = "1234567890123456";
         System.out.println("加密前： "+s2);
         String encrypt = AES_CBC.encrypt(s2, s, iv.getBytes());
         System.out.println("加密后： "+new String(encrypt));
         String decrypt = AES_CBC.decrypt(encrypt, s, iv.getBytes());
         System.out.println("解密后： "+decrypt);
     }
 }