README Udate

README.md

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-# Burp-CSId-Calc
-Burpsuite Extension to Session ID Entropy Calculator
+# BurpSuite Extension - Session ID Entropy Calculator(CSId Calc)
+BurpSuite Extension for computing Entropy for Session ID.
+I made it based on what I made with Python.
+- https://github.com/happylie/CSId-Calc
+- https://happylie.tistory.com/145 (Only Korean)
+
+## Description 
+In this extension, when a session ID value is entered, the result value is derived by checking the corresponding session ID based on the contents below.
+- Characters Check
+  - Lower Case : 26
+  - Upper Case : 26
+  - Lower & Upper Case : 52
+  - Arabic numerals : 10
+  - Lower Case & Arabic numerals : 36
+  - Upper Case & Arabic numerals : 36
+  - Lower & Upper Case & Arabic numerals : 62
+
+- Session String Length
+
+## Setup
+1. Download [Jython](https://www.jython.org/download) in Burp Suite
+![](screenshots/jython.png)
+2. Download the extension
+3. In the 'Extensions' tab under 'Extender', select 'Add'
+4. Change the extension type to 'Python'
+5. Provide the path of the file ‘burp_csid.py’ and click on 'Next'
+![](screenshots/burp_extension.png)
+6. Load Burp Extension Output : 'CSId Calc Extension Loaded!!'
+![](screenshots/extension_load.png)
+
+## Usage
+Copy the session ID value, put it in Input, and click the calc button.
+<br>
+When you click the Clear button, all result values checked so far are deleted.
+![](screenshots/burp_cisd_usage.gif)
+
+## Requirements
+- [Jython 2.7.2](https://www.jython.org/download)
+- Burp Suite 
+
+## Todo
+1. We are preparing to calculate the session ID value copied from the Extensions menu by right-clicking anywhere in BurpSuite.
+2. It is a function available only in BurpSuite Pro, but it is being prepared to use the Issue activity.