The repo is about simple implementation of various algorithms and techniques used in cryptography, namely Simplified DES, Simplified AES, RSA, Caesar Cipher, Monoalphabetic Cipher.

A Java program that decrypts cryptograms without keys using frequency analysis

Modern Cipher Solver, a python program to encrypt, decrypt and brute force some most common ciphers.

Program that encrypts plaintext and (attempts) to decrypt ciphertexts, encrypted via a mono-alphabetic substitution cipher. Replaces letters based on frequency / n-gram analysis. Tried to incorporate hill-climbing algorithm by measuring the fitness of resulting texts to find the best key.

Security Package is a package that includes several security modules - Ciphers, Image Encryption and Decryption, Audio Encryption and Decryption, Steganography, Background Removal, OTP Generation and Authentication.

Monoalphabetic Cipher in python

Implementation of various cipher algorithms

Data security algorithms in C#

Explore classic and modern encryption methods with the Cryptography Toolbox. This open-source project offers a simple command-line interface for six encryption techniques, including Caesar Cipher and Vigenere Cipher. Ideal for learning and experimenting with cryptography.

This a Monoalphabetic Cipher Cryptography Machine.

A nice UI program built with Qt and C++ to perform a letter frequency attack on monoalphabetic cipher.

Monoalphabetic substitution, RSA, vignere and transposition ciphers

Calculadora criptografica com as cifras de César, Monoalfabética, Playfair, Vigenère e Enigma.

A simple cryptographic program relying on a monoalphabetic substitution cipher with steganography support for PNG files.

knowledge of basic concepts of computer security including network security and cryptography.

Network Security and Cryptography Lab Programs

Here are few cipher codes

Security package of some security algorithms is prepared for the Computer and Networks Security course at Ain Shams University.