Tripper - Hysoft Wiki - Hysoft

Tripper

Outline

1. 1. What this page?
   2. The idea
   3. Why I can't spoof to him?
   4. Implementation code
      1. Notice
   5. How to use it

What this page?

This page is written how to implement the feature to spot imposter

The idea

Actually, if you watch a some topic of 2ch, you can find a poster like:

1 名前：Name◆doui./as  2009/05/17(日) 10:06:30.60

And, if you spoof to him and post something, everybody finds out that you are imposter because of the following difference:

1 名前：Name◇doui./as  2009/05/17(日) 10:06:30.60

Why I can't spoof to him?

The system, which is like that, is called Hitoriyo Cap in 2ch. Posting the following string as your name:

AAA#BBB

the server will crypt "BBB" with first 2 bytes as salt.
Additionally, it joins the crypted string and the name before "#" with "◆" as a glue. If "◆" exists, it can spot imposter by replacing "◇" before that behavior.

Implementation code

The implementation code is here:

 <?php
 function getTripName($name){
  $after_name=str_replace("@","|",$name]);
  $TripArray=explode("#",$after_name,2);
  if(count($TripArray)>1){
   $salt=substr($TripArray[1],0,2);
   $TripArray[1]=strrev($TripArray[1]);
   $TripArray[1]=crypt($TripArray[1],$salt);
   $TripArray[1]=substr($TripArray[1],-10);
   $after_name=implode("@",$TripArray);
  }
 return $after_name;
 }
 ?>

Notice

Unlike 2ch one, This script uses the "reversed" key as salt, because if this script outputs the same of 2ch one, making a lot of thread is expected. Moreover, the glue is different, because "◇" and "◆" is not supported on ASCII; this may cause greeking.

How to use it

1:Execute the function with the name as a argument.
2:The returned name is string after conversion. Thus, it is used as name
3:Use the string returned by execution of 2 as name