Java 3DES加密解密

本博文转载：https://blog.csdn.net/softwave/article/details/76975272

依赖包

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

 

算法代码

     /**
         * 转换成十六进制字符串
         * @param username
         * @return
         *
         * lee on 2017-08-09 10:54:19
         */
        public static byte[] hex(String key){  
            String f = DigestUtils.md5Hex(key);  
            byte[] bkeys = new String(f).getBytes();  
            byte[] enk = new byte[24];  
            for (int i=0;i<24;i++){  
                enk[i] = bkeys[i];  
            }  
            return enk;  
        }
        
        /**
         * 3DES加密
         * @param key 密钥，24位
         * @param srcStr 将加密的字符串
         * @return
         *
         * lee on 2017-08-09 10:51:44
         */
        public static String  encode3Des(String key,String srcStr){  
            byte[] keybyte = hex(key);
            byte[] src = srcStr.getBytes();
            try {  
               //生成密钥  
               SecretKey deskey = new SecretKeySpec(keybyte, "DESede");
               //加密  
               Cipher c1 = Cipher.getInstance("DESede");
               c1.init(Cipher.ENCRYPT_MODE, deskey);  
               
               String pwd = Base64.encodeBase64String(c1.doFinal(src));
    //           return c1.doFinal(src);//在单一方面的加密或解密  
               return pwd;
           } catch (java.security.NoSuchAlgorithmException e1) {  
               // TODO: handle exception  
                e1.printStackTrace();  
           }catch(javax.crypto.NoSuchPaddingException e2){  
               e2.printStackTrace();  
           }catch(java.lang.Exception e3){  
               e3.printStackTrace();  
           }  
           return null;  
       }
        
       /**
        * 3DES解密
        * @param key 加密密钥，长度为24字节  
        * @param desStr 解密后的字符串
        * @return
        *
        * lee on 2017-08-09 10:52:54
        */
        public static String decode3Des(String key, String desStr){  
            Base64 base64 = new Base64();
            byte[] keybyte = hex(key);
            byte[] src = base64.decode(desStr);
                    
            try {  
                //生成密钥  
                SecretKey deskey = new SecretKeySpec(keybyte, "DESede");  
                //解密  
                Cipher c1 = Cipher.getInstance("DESede");  
                c1.init(Cipher.DECRYPT_MODE, deskey);  
                String pwd = new String(c1.doFinal(src));
    //            return c1.doFinal(src);  
                return pwd;
            } catch (java.security.NoSuchAlgorithmException e1) {  
                // TODO: handle exception  
                e1.printStackTrace();  
            }catch(javax.crypto.NoSuchPaddingException e2){  
                e2.printStackTrace();  
            }catch(java.lang.Exception e3){  
                e3.printStackTrace();  
            }  
            return null;          
        }

调用

    String key = "xUHdKxzVCbsgVIwTnc1jtpWn";
            String idcard = "130682199606071234";
            String encode = PasswordUtil.encode3Des(key, idcard);
            log.info("原串：" + idcard);
            log.info("加密后的串：" + encode);
            log.info("解密后的串：" + PasswordUtil.decode3Des(key, encode));