What is rainbow table ???

Rainbow table

A rainbow table is a precomputed table for reversing cryptographic hash functions, usually for cracking password hashes. Tables are usually used in recovering the plaintext password, up to a certain length consisting of a limited set of characters. 

You can download the official rainbow project from here, where you can download the latest version of RainbowCrack . 

Rainbow crack is a tool where we can apply traditional brute force attack by guessing all the possible password one by one for cracking the passwords but this process consumes lot of time for cracking the passwords  .  The idea of time-memory trade-off is to do all cracking time computation in advance and store the result in files so called “rainbow table”.

These types of password crackers are implemented with pre-calculated hashes of ALL passwords available within a certain character space, be that a-z or a-zA-z or a-zA-Z0-9 etc. These are nothing but RainbowTables .

So where can i get these RainbowTables ???

Answer to this question is very simple , you can generate these Rainbow Tables by yourself but this will take lot of time and lot of diskspace. 

The project shmoo is offering collection of rainbow tables via bit torrent and you can download them from here .

Paid Rainbow Tables 

If you want to buy the Rainbow Tables you can buy from http://www.rainbowtables.net/.  Or these tables are not free but they are cheap http://www.rainbowcrack-online.com/.. 

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