Open Source Java Cryptography Software

JSignPdf is a free, open-source Java application for signing PDF documents with digital certificates. It provides a graphical desktop interface for everyday users and a command-line mode for scripted and server-side workflows. Supported capabilities include PKCS#12 keystores, smartcards and hardware tokens (PKCS#11), Windows keystore integration, visible signatures with custom images and positioning, timestamp authority (TSA) support, OCSP/CRL revocation checks, certification signatures, and PDF encryption. Cross-platform (Windows, Linux, macOS), built on the OpenPDF library, and translated into many languages by its community, JSignPdf is a trusted choice for anyone who needs reliable PDF signing without commercial licensing.

Portecle is a user friendly GUI application for creating, managing and examining key stores, keys, certificates, certificate requests, certificate revocation lists and more.

EJBCA is an enterprise class PKI Certificate Authority built on JEE technology. It is a robust, high performance, platform independent, flexible, and component based CA to be used standalone or integrated in other JEE applications.

BeeCrypt is an ongoing project to provide a strong and fast cryptography toolkit. Includes entropy sources, random generators, block ciphers, hash functions, message authentication codes, multiprecision integer routines, and public key primitives.

Cryptomator is a free and open source project that offers multi-platform, transparent client side encryption of your files in the cloud. It works with just about any cloud storage service; is totally transparent so you can work with your files how you normally would; and secure with a 256-bit key length AES encryption. It’s also simple and easy to use with no need for different accounts, key management, cloud access grants or cipher configurations.

mendelson AS2 is the JAVA-based open source EDIINT AS2 solution. Monitoring- and configuration GUI, async & sync MDN, signatures, encryption, TLS, web interface, pluggable into any servlet container, partner manager, certificate manager, data compression, optional profiles: MA, FN. Localized to Spanish, Italian, Portuguese, German, English, French, Polish

KeyStore Explorer is a free GUI replacement for the Java command-line utilities keytool and jarsigner.

This project provides a jCryption 2.0 implementation for Java (http://www.jcryption.org/).

jPBC is a Java porting of the PBC Library, a Pairing-Based Cryptography Library written in C. It supports symmetric and asymmetric pairing. With jPBC it is really easy to use such a strong cryptographic primitive.

Keytool is an Eclipse plugin that maintains keystores and certificates. It allows you to create certificates and put them in a keystore. You can from Eclipse, open and inspect certificates that are stored as .cer, or in a given keystore.

Portable PGP is a fully featured lightweight java based PGP tool. It allows to encrypt,decrypt,sign and verify text and files with a nice and absolutely straight graphical interface.

PLEASE NOTE that we are in the process of moving to GitHub: https://github.com/jasypt/jasypt Jasypt (Java Simplified Encryption) is a java library which allows the developer to add basic encryption capabilities to his/her projects with minimum effort, and without the need of having deep knowledge on how cryptography works. PLEASE NOTE that we are in the process of moving to GitHub: https://github.com/jasypt/jasypt

PortableSigner is a tool for digital signing (with X.509 certificates) of PDF files

encrypt is a multi-platform, file encryption application. Binary packages are currently provided for Arch, Debian, Fedora, MS Windows, Android and OS X. For further details, including the latest source code, visit https://albinoloverats.net/projects/encrypt

UPDATE 2024: Get a new version here: https://github.com/ivoras/EncryptedNotepad2 "Encrypted Notepad" does only one thing, but aims to do it perfectly - a Notepad-like simple text editor where files are saved (and later loaded) encrypted with industrial strength algorithms. Available both for the desktop (as a Java application) and on Android. Unencrypted data is never stored on-disk. Source is released (on SourceForge) under the BSD license.

Web AND Mobile (Apple iPhone) based, multi user, java port of the KeePass project. A free, easy to use password manager which helps you to manage your passwords in a secure way. Focused on deep encryption and ease of use.

Trexo PDF Signer is a professional-grade, open-source application designed for creating legally binding digital signatures on PDF documents. Built with enterprise security standards in mind, it provides seamless integration with hardware security modules (HSM), software certificates, and native platform keystores.

An open source implementation of the FIDO2 protocol to support passwordless strong authentication using public-key cryptography. Supports registration, authentication (all platforms), and transaction authorization (for native Android apps).

This is a Hash Calculating tool that calculates MD2,MD5,SHA-1,SHA-256,SHA-384,SHA-512 hash of text or a file. This has GUI developed in java swings.All it needs is sun jre installed.

Free portable cross-platform multi-user password manager, 100%-pure Java. DB for each pkg-user is encrypted and protected by pkg-user hash. In addition - passwords in DB are stored in encrypted form. In result - stored passwords are double encrypted ! Passwords of pkg-users are not stored in program - stored and compared only hashes. Support md2, md5, sha1, sha256, sha384 and sha512 hash. Support export DB to CSV, HTML, XLS or XML and import from CSV, XLS or XML. Simple and intuitive GUI - Graphical User Interface. PKG use crypto security random generator. Developed with Java Spring Framework. Tested in Windows/Linux. Need Jre-1.8 - https://www.oracle.com/java/technologies/javase/javase8-archive-downloads.html. Source - https://github.com/harp077/pkg . If you like this - put a star on https://github.com/harp077/pkg/ for support project please.

PCSecrets is a PC application that holds secret text data - protected by a master password and strong encryption. Use it as a password manager or just somewhere to hold any text data securely in one place. It can hold a second, hidden set of secrets that is undetectable and plausibly deniable. The program is also a PC counterpart of the Secrets for Android app. It uses the same data structure and provides synchronization that allows easy transfer of secrets between the two. For those who find the personal computer environment more comfortable for data entry and editing (i.e. a real keyboard), PCSecrets provides an alternative way to manage your secrets. Sync is also effectively a form of backup. To enable the sync feature with Secrets for Android, you need to install the PCSecrets Sync app, downloadable from SourceForge or Google Play. PCSecrets import plus PCSecrets Sync provides a route to importing secret data into Secrets for Android that would not otherwise be possible.

CrococryptFile is a file encryption tool which creates encrypted archives of files and folders. The encryption features of CrococryptFile can be compared to a ZIP utility that uses ZIP's AES encryption. However, there are significant differences. CrococryptFile... - encrypts all file and folder information including filenames, time/date and filesize information, - disguises any information of the archive's content, because all data and meta-data is simply integrated into a giant file dump. =Crypto Suites= For a full list of and details about supported crypto suites, please visit the CrococryptFile Homepage. Examples: - Password-based encryption (following PBKDF2) with AES-256, Twofish, Serpent, ... - Public key encryption using GPG/OpenPGP, Windows Keystore/CAPI with RSA/X.509 certificates - Cloaked (headerless) Password-based Encryption (AES-Twofish-256 cascaded) - ...

The SignServer is an application for server side signatures called by other systems. It is flexible and can be customized to specific needs. The SignServer have a ready to use TimeStamp server and signers for PDF, XML, ODF, PGP, OOXML and MRTD (ePassport DS).

ShredBitz is a free and simple file shredder tool that can wipe selected files from any hard disk drive. ShredBitz is written in the java programming language and uses a custom written algorithm for shredding. ShredBitz is a very powerful tool.

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.