Open Source Java Cryptography Software - Page 5

CryptoHelper is a Java program designed to aid in the decryption of classical ciphers, ie pre WWII ciphers. It brings together tools like frequency analysis, friedman tests, enciphering/deciphering for several clasical ciphers, and brute force algorithm

TextConverter is a graphical text editor allowing the user to encrypt/decrypt the textual contents displayed on the screen using a 128-bit AES (Advanced Encryption Standard) cipher.

Starting July 2026, StrongKey will start distributing new releases of its open-source software with digital signatures using the W3C XMLSignature (DSIG) standard. This project distributes CLI and GUI versions of software that can verify the signed package containing the content, signature and certificate chain.

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

Encrypti is a multi platform, easy to use encrypting tool for keeping your files secure. This application offers portability of encrypted files between various platforms. Secure your files with Encrypti!

Enfomi is a cross-platform standalone password-based encryption/decryption program that supports 27 algorithm variants (including AES 256bit). Archives can be self-decrypting, thus making it perfect for mobile applications.

Java application for encryption with a GUI. It is based in the XOR symetric encryption combined with a pseudorandom resorting of the bytes. Strenth and time to encrypt/decyrpt per MB adapted to size of input file. Multithread. zoom Multilanguage Dark mode JDK-17 compatibility It includes detailed documentation in English, Spanish and Catalan. You will find more about it at this web site: https://www.frojasg1.com:8443/downloads_web/web/html/encriptadorDeArchivos.html?origin=sourceforge

Fileprivacy is a small tool which easily encrypts and decrypts files with common algorithms like AES, Blowfish, Triple DES and RSA. You can either use passwords or keyfiles. Since Fileprivacy is coded in Java it should run on all popular operating systems. #######BETA 2####### Bugfix - Beta 1 stopped working if filename was too short or long - added .exe file ####### NOTE ####### This is an early beta implying there are some issues left. The Keygenerator stops working if you change the algorithm after setting the keylength. It has to be restarted for further use. Because there are no start scripts, yet, you have to start Fileprivacy from console by typing: java -jar Fileprivacy-1.0_<version>.jar ####### ALSO NOTE ####### The author of this software is not responsible for the safety of your data. There is no guarantee that one or more of the implemented algorithms cannot be compromised.

A very simple file encryption tool. Release 1 is a text editor that saves encrypted files. Release 1.1 will include the ability to convert any file, even binary, to a GEF (Gulosh Encrypted File). Release 2.0 brings the strong encryption into play.

HashSum is a .NET port from GNU's md5sum and sha1sum. It supports: hash algorithm selection between MD5 and SHA1 (more could be added later) and compatibility between HashSum and GNU's checksum file format

Suite of services and tools for handling PKI requirements. The initial list of programs contains: 1) a viewer/encoding converter for X.509 certificates, 2) a viewer/editor/generator for PKCS#7 and 3) a viewer/editor/generator for various keystores types.

A pure java library to operate on OpenPGP cards directly using javax.smartcard apis with no need of external dlls/frameworks (such as pkcs11 or opensc-java). Includes sample OpenPGP card edit application.

JavaLightServer is a multi-purpose server that can be used to share our desktop across the Internet with other authorized clients. It provides also a secure connection using SSL certificates.

Java implementation of the RSA cryptosystem. RSA is a splitkey cryptosystem developed by Rivest, Shamir, and Adleman @ MIT in '77. RSA is thought to be secure except by factoring large primes. Jsymmetric is more proof of concept than actually useful.

The Moonbounce API is a set of high level objects that encapsulate pieces of the Bouncycastle lightweight crypto API. Moonbounce significantly simplifies RSA key generation, signing, encryption/decryption and verification of both byte arrays and files.

MyPGP provides a graphical user interface for pgp encryption and signing. It is fully compatible with OpenPGP, and GnuPG. It relies on BouncyCastle libraries for the cryptographic primitives. It uses file system folders to store keys, either single or key rings, organized as a nested tree of folders. It can also create lists of keys for bulk operations.

NimpSmartCard is a framework to interact with smart cards through PC/SC readers as well as test/production readers such as Micropross and Smartware. The framework comes with sample tasks and a sample terminal manager which supports scripts and logs

Secrets for Android is an app that allows you to securely store and manage passwords and secrets on your Android device. PCSecrets is an application that provides similar facilities for a PC. PCSecrets Sync is an Android app that provides a synchronization capability between the two. It makes use of the new synchronization interface introduced in Secrets for Android (SfA) 2.4. The app is essentially a service and has no direct user interaction (no user interface). The app can be installed from Google Play or the .apk file can be downloaded from here. Secrets for Android is available on Google Play. PCSecrets is available on SourceForge. Click on the web site link below for full documentation.

This proyect is an implementation of OpenPGP (RFC2440) written entirely in Java. It let's you sign, encrypt, decrypt messages and files, using public key cryptography.

A command-line to help encipher and decipher your password based on a simple algorithm. Java version provides GUI.

The goal of the project is to create an example of Java ME based application for SMS message encryption. This aplication is only of academic interest and is not suitable for real safe SMS encryption.

A plattform independent encryption-tool with a simple user interface (swing/java). It uses 'Password Based Encryption' (PBE) to encrypt and/or decrpyt files on the filesystem. Encryted files will also be compressed using the zip-format.

This is a JavaScript library which gives the ability to use cryptographic functionality abstracted of available technologies on the browser side. It executes a cryptographic function with the fastest technology including Java, JavaScript and Flash.

SecretBox is an open-source, high-safety password manager for Windows/Linux/J2ME devices. You can build the passwords list conveniently in PC side, encrypt it by a master password, and upload to your mobile phone.

SwiftCrack is a wireless LAN (WLAN) tool which recovers encryption keys. SwiftCrack operates by proactively monitoring transmissions, injecting traffic with known key streams, computing the encryption key when enough packets have been gathered.