Open Source Cryptography Software

This project is a C++ library which allows incorporating DKIM into an existing MTA or other application. It provides full support for signing, verifying, and SSP. It is compliant with RFC 4871.

Geheimnis is no longer maintained (use of kpgp is now recommended). Geheimnis was an application for UNIX/KDE that "wraped" around encryption programs and their irksome command-line interface, making it easier for users to use these programs.

SSL-Explorer is a fully-featured, web-based SSL VPN server. This project is no longer actively maintained as the SSL-Explorer technology has now been acquired by Barracuda Networks, Inc.

IMPORTANT -- This is an old project that is no longer supported and should not be relied upon for serious applications. If your looking for encryption software, I suggest OpenSSL or GnuPG which are better equipped.

LavaRnd is a random number generator that converts a digitized chaotic source (such as a lens capped web camera) into cryptographically strong random numbers. LavaRnd comes with both an APIs (currently C and Perl) as well as a number of demos.

alr-encrypt has moved to http://sourceforge.net/projects/encrypt

A program to break the WWII Enigma code.

PKS is an OpenPGP Public Key Server. It allows users to store and lookup public keys from the server's database. It can also synchronize with other servers. (This product includes software developed by Marc Horowitz.)

Java SWING applet to store encrypted files in your box.net account

Questo software permette di decrittografare testi crittografati con il cifrario di Cesare tentando tutte le combinazioni possibili.

DISCONTINUATION OF PROJECT. This project will no longer be maintained by Intel. Intel will not provide or guarantee development of or support for this project, including but not limited to, maintenance, bug fixes, new releases or updates. Patches to this project are no longer accepted by Intel. If you have an ongoing need to use this project, are interested in independently developing it, or would like to maintain patches for the community, please create your own fork of the project. ====>Due to the age of the code, the cryptography should not be used in any new products.<==== This repository may be deleted on or after June 30, 2020. CDSA is a security middleware specification and reference implementation that is open source, cross-platform, interoperable, extensible, and freely exportable

This is cryptographic disk driver for FreeBSD. It provides transparent encryption and decryption of selected devices. It is based on vn(4).

Cryptomak 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.

Crypty is your tool for encrypting and decrypting your private messages and files with security provided by the usage of TripleDES (3DES) or RSA.

DecodeBase64 does exactly what the title says: it decodes strings encoded with the Base64 algorithm. Source code is provided in both Java and C++.

Fast Encryptor is a quick-and-dirty en/decryptor that can operate on files and/or streams. Coded for SPEED as opposed to security.

JCrypTool moved to GitHub! See https://groups.google.com/d/topic/jcryptool-developers/nauEXL6vsbk/discussion for more information and visit our new project home at https://github.com/jcryptool

JCrypTool moved to GitHub! See https://groups.google.com/d/topic/jcryptool-developers/nauEXL6vsbk/discussion for more information and visit our new project home at https://github.com/jcryptool

JFish is a simple Java implementation of the popular Twofish cryptography algorithm. It allows any application to easily implement powerful encryption, using a single small library and minimal code changes.

A java application that allows you to store files into a "data store". These files are encrypted by passphrases and padded with random garbage to provide plausible deniability (you cannot know if there are any more files in the store or not).

JRijndael is a 100% pure Java implementation of the popular Rijndael (aka AES) cryptography algorithm. It's designed to be implemented as easily as possible and features ECB, padding, and a simple API.

JSerpent is an easy to use Java implementation of the powerful Serpent cryptography algorithm. It can be easily implemented into any project, and is complete with ECB, padding, and a simple API.

KWoodhammer is the all-in-one solution for traditional encryption methods as you know from Enigma, the Pope or the Russian Secret Service (KGB).

Sandfish is a small encryption/decryption tool written in Delphi/Kylix.

Secure Distributed Objects provides a mechanism for using socket-based SSL communications in the MacOS X Distributed Objects system, by providing a NSPort subclass - SecureSocketPort - and other utilities.