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

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

Be a part of learnmeabitcoin translation

Hääl - Anonymous Electronic Voting System on Public Blockchains

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

Pure Rust client for YubiHSM2 devices

A pure python implementation of ML-DSA (FIPS 204) and CRYSTALS-Dilithium

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.

Module-Lattice-based Digital Signature Standard (draft) standard by NIST

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.