message-encryption

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

Hesar is an Android app for local message encryption (AES‑256‑GCM) with Persian‑encoded output.

Detects passwords, tokens and secrets in messaging apps and secures them with end-to-end encrypted SecNote links.

Encrypt & Decrypt Your messages

A Java application implementing the AES encryption algorithm, allowing users to securely encrypt text and decrypt it back to its original, readable form.

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.

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 ,

iKiwi

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

Security of Networks and Services (Rizomiliotis)

E2E encryption bot and client for Telegram

Sistema de comunicação distribuído para cenários de coordenação em emergências.

Transparent compression and authenticated encryption for Symfony Messenger payloads. Opt in per message with a stamp or enforce per transport — deflate/gzip/zstd, XChaCha20-Poly1305 via libsodium, key rotation, zero handler changes.

SecureChat Pro — Encrypted message payloads for terminal chat + GUI crypto tool. AES-256-GCM, scrypt, SC2 envelope, replay protection, and local simulation. Transport metadata is not hidden. Created and powered by DERNOUNI SAMI "Cyber Security Expert".

Chat Server Application

Message encryptor and decryptor based on an Ethereum implementation of ECIES with a GUI

Simple user-friendly message encryption