CrypTool Transcriber & Solver -- a tool for transcribing and cryptanalyzing historical ciphertexts

A Java program that decrypts classical ciphers without keys using frequency analysis. Includes support for simple (mono alphabetic) substitution cipher, Vigenere cipher, Caesar cipher, Vernam cipher, and variations.

An open-source library supporting simulation and cryptanalysis of stream ciphers based on linear feedback shift registers (LFSRs).

Playing around with Beale Cipher from time to time

Cryptographic algorithms and attacks in Java 8

Entregas de la asignatura Seguridad de la información (criptografía)

Java-based AES-128 round key inverter for reversing key expansion to recover the original encryption key — ideal for cryptography research and security analysis.

To understand the non-uniform distribution of English letters and how that may be exploited in cryptanalysis

A Java console application that uses simulated annealing to break a playfair cipher. Fourth Year, Artificial Intelligence, Software Development.

Cryptanalysis 🔒 assignment to find keys 🔑 of FEAL4 encryption for module: CA642

A program to help analyse the ciphertext of a Vigenere cipher, and solve it