opmsg message encryption

Securely host your own e-mail accounts, as e-mail was originally designed to work!

Post-quantum command-line encryption tool with recipient anonymity and zero-seek streaming.

general programming stuff

Simple CLI message/file encryption tool supporting passwords or passphrases.

Encrypt & Decrypt Your messages

Shell script that does simple encryption/decryption algorithm for text messages with only alphabet characters. This encryption/decryption is based on the use of XOR logic gate.

A simple Java application that uses AES algorithm to encrypt any text or decrypt the encrypted text back to a meaningful message.

This repository contains the algorithm for the Hill Cipher encryption which use the matrix to encrypt the message and even to decrypt it using the inverse of the same matrix ,this algorithm uses the python program to implement it and of course we can use any language to implement it ,

Security of Networks and Services (Rizomiliotis)

E2E encryption bot and client for Telegram

iKiwi

A complete end-to-end encrypted local mailing system delivered as a single PHP file. Built with zero-knowledge architecture principles, this application ensures that your communications remain private and secure through client-side AES-256-GCM encryption.

Sistema de comunicação distribuído para cenários de coordenação em emergências.

A project in C language for 1st year at BUT Informatique

Simple user-friendly message encryption

Caesar Cipher w/o GUI. Enter a message and a key (number from 1-26) and receive an enciphered message back. Also has decipher functionality if you know the key.

Discrete math lab project on cryptography and RSA algorithm with secure message encryption, key exchange.

web-based application that allows users to encrypt and decrypt messages using AES encryption. The user can input a message and a key (password), and the application will encrypt or decrypt the message accordingly.

Symmetric Encryption and Decryption Algorithm for encrypting the plain text.