Monoalphabetic Substitution Cipher

This collection of tools helps cracking texts encrypted with monoalphabetic substitution: 1) Gathering statistics of a certain language, 2) creating keys, 3) encrypting and decrypting texts, 4) cracking texts automatically, 5) fine-tuning of decryption

This function uses frequency analysis to attack and decode messagesencoded using a /substitution cipher/ which exchanges each letter of thealphabet for another. Unlike the famous "Caesar Shift" cipher, which"shifts" the letters of the alphabet along by a certain amount, givingjust 26 possible...

Cryptomak is collection of php script for encrypting and decrypting messages (plain or encrypted text)Cryptomak contains some encryptions such as shift, affine, monoalphabetic substitution, vigenere, permutation, and so on. Also, it contains tools such as frequency distribution and index of...


Platforms: Windows, Mac, *nix, PHP, BSD Solaris

The objective is to demonstrate character/ symbol frequency distribution analysis (reference to the English language) on 2 vintage ciphers, namely Caesar cipher (a mono-alphabetic substitution cipher) and the Vigenere cipher (a poly-alphabetic substitution cipher).Under the symbol frequency...


Platforms: Matlab

Free program, which allows you to change/replace multiple letters and phrases at a time. It is easy to create and save lists of changes/replacements, so that you can reuse them. You can even paste replacement table from your spreadsheet (e.g. Excel/Calc). wReplace resembles Notepad. Like...


Platforms: Windows

Crank is a project to provide a GUI toolkit to facilitate the breaking of cryptosystems. Initial focus is on the cryptanalysis of monoalphabetic substitution ciphers These are some generic installation instructions. The `configure shell script attempts to guess correct values for various...


Platforms: *nix

Free program, which allows you to change/replace multiple letters and phrases at a time. It is easy to create and save lists of changes/replacements, so that you can reuse them. You can even paste replacement table from your spreadsheet (e.g. Excel/Calc). wReplace resembles Notepad. Like...


Platforms: Windows

Software that encrypts and decrypts ciphers Monoalphabetic Cipher is a free software that takes a string and encrypts it with a key and algorithm that you specify. Monoalphabetic Cipher encrypts and decrypts additive and multiplicative ciphers.


Platforms: Mac

Cryptomak Cipher Tools project consists of a collection of PHP scripts for encryption purposes. Cryptomak contains a cipher and tools for encryption utilities written in PHP, including substitution, vigenere, affine, transposition, and index of coincidence. It is powered by the Phrame...


Platforms: *nix

Cryptomak Cipher Tools project consists of a collection of PHP scripts for encryption purposes. Cryptomak contains a cipher and tools for encryption utilities written in PHP, including substitution, vigenere, affine, transposition, and index of coincidence. It is powered by the Phrame platform...


Platforms: *nix

App::SimpleScan::Substitution::Line is a line with optional fixed variable values. SYNOPSIS my $line = App::SimpleScan::Substitution::Line->new(" this "); # Use only this value when substituting " ". $line->fix(substituite => change); # what vars are fixed? my @fixed_ones =...


Platforms: *nix

This script shows a simple (but not hopelessly fragile) approach for string substitution.


Platforms: Windows, Mac, *nix, Python, BSD Solaris

The Blowfish cipher in C and i386 assembler. In cryptography, Blowfish is a keyed, symmetric block cipher, designed in 1993 by Bruce Schneier and included in a large number of cipher suites and encryption products. While no effective cryptanalysis of Blowfish has been found to date, more...


Platforms: *nix

The Algebraic Toy Cipher is a toy cipher for algebraic research. It is scalable in the number of bits and in the number of rounds. Works over two fields GF(2)/P, being one for the s-box invertion and the other for the mixing layer linear transformation.


Platforms: Windows, Mac, Linux

CryptoMAK project contains cipher and tools for encryption utility written in PHP such as substitution, vigenere, affine, transposition and index of coincidence. It is powered by Phrame platform which implements MVC design and Smarty template engine.


Platforms: Windows, Mac, *nix, PHP, BSD Solaris

This is a dedicated mex-file for use with UMFPACK to efficiently complete the permuted forward/back substitution to solve linear systems, A*x = b when A is sparse and b is a dense vector.UMFPACK is used when the MATLAB function "lu" is called with 4 outputs:[L,U,P,Q] = lu(A, tol);The mex-file...


Platforms: Matlab

The code generates binary sequence of a given length and then writes it to a .txt file. the sequence generated is random in nature and this cipher was used in GSM for 2 decades


Platforms: Matlab

CryptoMAK project contains cipher and tools for encryption utility written in PHP such as substitution, vigenere, affine, transposition and index of coincidence. It is powered by Phrame platform which implements MVC design and Smarty template engine.


Platforms: *nix

Deltacrypt OneClick Public Key File and Email Encryption Software application featuring RSA protection in its public keys, encryption and public key integrity protection with hashing functions and digital signatures. Deltacrypt OneClick lets the user create and distribute public keys. Its...


Platforms: Windows

API for work with substitution device (see DOS command "subst"). Win9x ONLY. For WinNT and Win2000 use native API call


Platforms: Windows