Open Source Cryptography Software

JSignPdf is an open-source Java application that adds digital signatures to PDF documents.

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.

Digital Signer is a powerful and user-friendly software designed to secure and sign your digital documents with ease. Ideal for Tender filling, individuals, businesses, and professionals, this software ensures that your sensitive documents are protected from unauthorized editing and tampering, maintaining their integrity and authenticity. Key Features Sign PDFs with Hardware Devices: Ensuring the highest level of security. Digital Signature Certificates (DSC): Apply digital signatures using DSCs, Smart Cards, providing a secure and legally binding way to authenticate your documents. Your Privacy, Our Priority Protect Your Data with Complete Confidence. Our software is designed to keep your information 100% secure. Unlike cloud-based solutions, there’s no need to share your private or confidential files with unknown servers. Everything works entirely 100% offline on your local machine, delivering 10x faster performance while maintaining the highest level of privacy.

Bias is a cross-platform versatile information management application / Organizer

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

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.

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.

ReHash is an easy-to-use console-based hash calculation tool written in C++. It supports many algorithms and output formats and it can be fully configured using some of the many command-line arguments which can be passed to the tool.

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).

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.

BitResurrector v3.0.3 is a high-performance security research tool designed for digital archaeological tasks: recovering access to abandoned Bitcoin assets. The engine exploits specific entropy vulnerabilities (CVE-2013-7372) and uses a 9-echelon statistical filter to segregate mathematical "corpses" from potentially valid keys. Technological Stack: - Zero-Latency Bloom Filter: Real-time matching against 58M+ active addresses (Loyce Club data). - Turbo Core: C++/AVX-512 optimization with processor affinity. - GPU Mode: Massive parallel computation via NVIDIA CUDA. - Memory Management: Zero disk I/O lag using mmap (Memory-Mapped Files). BitResurrector is a closed-source, proprietary tool for researchers and professionals.

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.

This project is devoted to provide a simple software layer for digital signature, when an hardware cryptographic token is required. The default implementation tries to comply as strictly as possible with the italian law digital signature directives.

OpenSignature is an open source project for the digital signature of documents. It works with all cards supported by OpenSC and focuses on adding support for cards from accredited Italian CAs. The goal of the project is to provide a first single product

A quick and easy to use SHA1 calculator for Windows, using C# & .net. (very) Similiar in style to winMD5Sum; supports filenames passed on the command line & files drag+dropped on!

An application to provide a worldwide mobile secure/confidential payment system over the internet and other kinds of insecure/unreliable networks

New, Improved version of VB.Net Registration System. It sends emails to alert you when someone registers your program, if they try to use a used key, and if they try to use a banned key/their key has been banned. Checks every time against ban list.

PalmSecure (pSecure for short) is the opensource adaptation of the discontinued Toysoft program, SecureX. The source rights were purchased from them, and, after meeting their conditions, it was made free for everyone to use. Please use it!!!!

StrongKey CryptoEngine (SKCE) 2.0 is a "crypto Swiss Army knife" server to perform cryptographic functions through web services, while freeing application developers to focus on business functionality. Its modules include: - A FIDO Engine to support FIDO U2F key registrations/authentications - An encryption engine to encrypt/decrypt files using AES/TDES keys - Escrowing keys to on-premises key management system (StrongAuth KeyAppliance/SAKA) - Integration to cloud storage services (AWS S3, Azure and Eucalyptus Walrus) - A signing engine to digitally sign documents, code, etc. with FIPS 140-2 HSM support - An LDAP Engine for AD/LDAP integration for authorization decisions SKCE is battle-tested and in production at one of the largest e-commerce companies in the world, protecting more than 50M documents within the business process; see http://bit.ly/14VPYlO for the case study. Download StrongKey CryptoCabinet (SKCC) on this site to see how to use SKCE.

Command-line strong encryption tools including: triple cascaded encryptor, multiple hash calculator and multiple block cipher encryptor. Supports AES, Serpent, Twofish, SHA-512, RIPEMD-160, MD5 and other algorithms.

A software written in java to compute the digital signature on documents and verify them, using a smart card or a token file in p12 format

Ampare Hide Link is a script which auto hide link on your website to prevent user from knowing the final destination. Ampare Hide Link is using Defat Technology and other to protect your link on iframe and other tags. If you want to share some content but want to keep the url private. You can use Ampare Hide Link . It is free

SyncShare Server is a secure messaging and real-time collaboration platform. Build solutions to connect people, data, and applications through firewalls and mobile devices. It handles all networking, security issues and lets one focus on the business

Pixeloid is a free piece of software that lets users encode data, in the form of text or an image(β), into a Pixeloid Matrix. Pixeloid additionally provides impenetrable security to users by enabling them to password protect their matrices.

Password manager is a software that helps a user organize passwords. PwdManager is a free, open source password manager for home users. Good password management is essential to stay safe, on and offline. These days, services and programs are so many and varied that keeping track of your passwords across devices, websites and apps can be near-on impossible. That's where a password manager like PwdManager comes into play.