There are 7 repositories under signing topic.
letsencrypt/acme client implemented as a shell-script – just add water
Step-by-step guide on how to create a GPG key on keybase.io, adding it to a local GPG setup and using it with Git and GitHub.
A cli tool that helps signing and zip aligning single or multiple Android application packages (APKs) with either debug or provided release certificates. It supports v1, v2 and v3 Android signing scheme has an embedded debug keystore and auto verifies after signing.
Disable PatchGuard and Driver Signature Enforcement at boot time
PKI.js is a pure JavaScript library implementing the formats that are used in PKI applications (signing, encryption, certificate requests, OCSP and TSP requests/responses). It is built on WebCrypto (Web Cryptography API) and requires no plug-ins.
Restore/upgrade firmware of iOS devices
The source repository for the Trusted Platform Module (TPM2.0) tools
Fast and efficient ed25519 signing and verification in Rust.
NodeJS module and commandline utility for re-signing iOS applications (IPA files).
A simple, modern, and secure encryption and signing tool that aims to be a better version of age and Minisign.
GitHub Action to import a GPG key
SignServer – Open source, PKI-based signing software to sign code, documents, timestamps and more.
A PKCS#11 interface for TPM2 hardware
A framework for the JOSE standards JWS, JWE, and JWK written in Swift.
Link Identity Editor. Put real or fake signatures in a Mach-O.
Minimal library for Ethereum transactions, addresses and smart contracts.
apksigcopier - copy/extract/patch android apk signatures & compare apks
Mobile user authentication flow with React Native, Expo, and AWS Amplify: Sign In, Sign Up, Confirm Sign Up, Forget Password, Reset Password.
PortableSigner - A Commandline and GUI Tool to digital sign PDF files with X.509 certificates
Libdigidocpp library offers creating, signing and verification of digitally signed documents, according to XAdES and XML-DSIG standards. Documentation http://open-eid.github.io/libdigidocpp