How to decrypting the php encrypted string using android?

Question

Hi I want to decrypting my php encrypted string. My code is

UsingPHP.java

import java.io.UnsupportedEncodingException;
import java.u         


        

Answer 1

Well there are two things:

1. Your encode5t function returns invalid base64 data. If I call encode5t("malavika") then the string ==AUVVVeZhlQhdlRspnUsRW is returned which is not valid base64. The = sign is the padding and is only allowed at the end of the base64-string. I guess what you wanted is:

   function encode5t($value1)
   {
       for($i=0;$i<3;$i++)
       {
           $value1=base64_encode(strrev($value1));
       }
   
       return $value1;
   }
   

   That means you just have to first call strrev and then base64_encode. And in the decode-function you first call base64_decode and then strrev (or the Java counter-parts).

2. As I've said in the comment, the second Parameter to Base64.decode in your Java-code is expects flags for the base64-processing and not the length of the string. This might for example turn on the URL_SAFE flag which makes it incompatible with the output of PHP's base64_encode.