pure-python ECDSA signature/verification and ECDH key agreement

📡 An AX.25 packet radio chat protocol with support for digital signatures and binary compression. Like IRC over radio waves.

A simple, modern, and secure encryption and signing tool that aims to be a better version of age and Minisign.

⭐ Приложение-сервер для работы с Электронно Цифровой Подписью (ЭЦП) РК

Multi-provider digital signature library for Rust

A linked data proof suite for BBS+ signatures

Be a part of learnmeabitcoin translation

Ed25519 high-performance public-key signature system as a RubyGem (MRI C extension and JRuby Java extension)

Simple and Agnostic PDF Document Parser in PHP - sign PDF docs using PHP

Hääl - Anonymous Electronic Voting System on Public Blockchains

Pure Rust client for YubiHSM2 devices

Make Instructions: Airgapped raspberry pi computer for working with blockchains featuring LUKS full disk encryption and using qr-codes to pass encrypted files and offline transaction instructions across the airgap.

Bash script that verifies your GOG offline installers' authenticity and checksums. Made to scan large collections.

Kudelski Security's 2018 pre-Black Hat crypto challenge

A simple Dart library for asymmetric encryption and digital signatures

PDF-Signer is a Library that allows you to add Digital Signatures to Any PDF file by picking a signature from a gallery or handwriting

An Advanced PHP Cryptography Framework

WeasySign is a small simple to use high level library for digitally signing pdf's generated with the WeasyPrint PDF library.

CRyptogrAphic COnstructions

Official PHP client for SignRequest.com