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rainbow-table's Introduction

rainbow-table

Implemented a Rainbow table using Haskell. The goal was to create a program that would use a rainbow table to crack a password based on a given hash.

Files:

  • rainbow_assign.hs: A module used inside rainbow.hs which provides a function such as pwHash.
  • rainbow.hs: A module responsible for creating a rainbow table and cracking passwords.

Features:

  • pwHash: a function that converts a string password into a hash value.
  • pwReduce: a function that converts a hash value to possible password.

Steps to load:

1) Open ghci  
2) Use ':c' at the location of your saved files  
3) Use ':l assignment1.hs' 
4) Creating a table:  
*Main> :t rainbowTable  
  rainbowTable :: Int -> [Passwd] -> Map.Map Hash Passwd  
*Main> rainbowTable 2 ["dccdecee","cdeccaed","acbcaeec","eeeeaebd","ccdccbeb"]  

Demo:

*Main> let table = rainbowTable 40 ["abcdeabc", "aabbccdd", "eeeeeeee"]  
*Main> findPassword table 40 1726491528  
*Just "abcdeabc"*  
*Main> findPassword table 40 (-206342227)  
*Just "dbddecab"*    
*Main> findPassword table 40 1726491529  
*Nothing*  
*Main> findPassword table 40 0  
*Nothing*  

Note:

  • Do "Steps to load" before "Demo".

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