Java 3DES加密解密（Commons.Codec Base64）

依赖包

import org.apache.commons.codec.digest.DigestUtils;
import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
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 = DemoApplication.encode3Des(key, idcard);  
        System.out.println("原串：" + idcard);  
        System.out.println("加密后的串：" + encode);  
        System.out.println("解密后的串：" + DemoApplication.decode3Des(key, encode));  

输出

原文