Java 3DES加密解密（Commons.Codec Base64）

浅浅的花香味﹌ 2022-05-22 08:17 261阅读 0赞

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

![70][]

[原文][Link 1]

[70]: /images/20220522/2636eff97d174adeb80a26a10a280a56.png
[Link 1]: https://blog.csdn.net/softwave/article/details/76975272