Crank Icon

Crank

Crank is short for "CRyptANalysis toolKit", and its overall purpose is to ……

CrankOverview

Editor: Crank is short for "CRyptANalysis toolKit", and its overall purpose is to provide a powerful and extensible environment for solving classical (pen-and-paper) ciphers, providing as much automation as possible.Classical ciphers include common schemes like monoalphabetic substitutions, where each letter of the alphabet is mapped to another (usually different) letter consistently through the text. The first version of Crank is restricting itself to these special ciphers. Other algorithms forever devoid of Crank's attentions include Enigma, RSA, DES, MurkelFish, or anything else invented after 1900. They're hard(er). Oh, well, maybe Enigma.
Crank has the concept of a source file (the ciphertext), and a view on that file (hopefully this becomes the cleartext). The view on the source is determined by the currently active plugin, which corresponds to a cryptanalysis tool. The bottom text area in the main window is the view of the source after it's been acted on by the tool, and the top part is before. For example, if it's a monoalphabetic substitution decoder, if part of the key isn't complete, unmapped (i.e. still ciphertext) letters will be displayed in upper case, whilst decoded letters will appear as lower case. The various key controls and statistics displays are meant to help you transform the key into the correct decoding one. There is also an automatic cracking tool which will Attempt to crack the Cipher for you. It needs the cipher to have around 2-3000+ alphabetic characters to work reliably, but I've had partial decryptions happen with texts as small as 67 letters. It works by measuring the Frequency of letters, pairs of letters and triples of letters, and comparing them to what you would expect to get in a sample of PlainText (English, in this case). It tries small variations of a key to try and make the frequency counts of the transformed text match standard English frequencies.

NEW

Fixed some bugs.

CrankInformation

Version
0.1.3
Date
11.15.10
License
Free
Language
English
File Size
1.39MB
Category
Operating Systems
Windows XP, 2000, 98
System Requirements
No additional system requirements.
RAR Password Unlocker Icon
Recover password to open and extract RAR files.
Trial
Facebook Password Decryptor Icon
Facebook Password Recovery Tool.
Free
iToolab UnlockGo (Android) Icon
Bypass Samsung/Xiaomi/Redmi/Vivo FRP, remove screen locks, factory reset Samsung
Trial
Google Password Recovery Icon
Recover all saved Google Accounts passwords from your PC
Free
Gmail Password Recovery Icon
Find and recover Gmail passwords for you
Free
Aiseesoft Android Unlocker Icon
remove locks from Android devices, including PIN, pattern, password, FRP lock
Trial
ThunderSoft Free ZIP Password Recovery Icon
A solution to recover zip files password.
Free
ThunderSoft Free RAR Password Recovery Icon
A solution to recover rar files password.
Free
More