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A rainbow table is a password cracking tool that uses a pre-generated data set of password hashes to decrypt hashed passwords into plaintext.
Ophcrack is a free Windows password cracker based on rainbow tables. It is a very efficient implementation of rainbow tables done by the inventors of the method. It comes with a Graphical User Interface and runs on multiple platforms. Features: » Runs on Windows, Linux/Unix, Mac OS X, ... » Cracks LM and NTLM hashes.
A rainbow table is a database that is used to gain authentication by cracking the password hash. It is a precomputed dictionary of plaintext passwords and their corresponding hash values that can be used to find out what plaintext password produces a particular hash.
Hash cracking with rainbow tables on YouTube: NTLM MD5 SHA1. Rainbow Table Performance. Two figures below are based on log files of 380 tests. Each test uses hashes of randomly generated plaintexts. "Hash Cracking Performance" equals to "Key Space of Rainbow Table" divide by "Hash Cracking Time". Rainbow Table Specification
A rainbow table is a precomputed table for caching the outputs of a cryptographic hash function, usually for cracking password hashes. Passwords are typically stored not in plain text form, but as hash values.
It crack hashes with rainbow tables. Features. Rainbow table generation, sort, merge, conversion and lookup; Rainbow table of LM, NTLM, MD5, SHA1, SHA256 and customizable hash algorithms; Rainbow table of customizable charset; GPU acceleration with AMD GPUs (OpenCL technology) GPU acceleration with NVIDIA GPUs (CUDA technology)
Today we aren't going to be cracking passwords per se, rather, we are going to learn the basics of generating rainbow tables and how to use them. First, let's go over how passwords are stored and recovered.