2019 Summer Mentee Project Update: Git signing with DIDs Hyperledger Indy – Hyperledger Foundation 2025 Update: Off to a Fast Start! Read on → Search Join About About Explore membership Members Technical Advisory Council Governing Board Speakers Bureau Staff FAQ Store Contact us Technologies Ledger technologies Interoperability Integration & implementation Decentralized identity Cryptographic tools & protocols Project matrix Labs All projects Deploy Certified service providers Vendor directory Training partners Participate Why get involved? How to contribute Contribute to code Host your project with us Regional chapters Special interest groups Job board Resources Linux Foundation ID Logos & guidelines Trademarks & guidelines Charter Code of conduct Github repos Discord Wiki Mailing lists Report a security bug Learn Case studies Training & certifications Use case tracker Member webinars Insights News Blog Announcements Newsletters Events Events Meetups Meeting calendar Join Follow Us Hyperledger Indy 2019 Summer Mentee Project Update: Git signing with DIDs Hyperledger Indy Hyperledger | Dec 12, 2019 This year, I had the opportunity to contribute to the open source Hyperledger Indy community as part of the 2019 Hyperledger Summer Mentorship program. This experience also helped me collaborate with other open source communities, mainly the git community. Project presentation Currently git supports signing/verifying commits and tags using GPG only. The goal of this project is to make the git signing interface compatible with external signing tools and with DIDs (Distributed Identities) using programs such as bettersign, for example. This project is the continuation of the work already done by David Huseby on the subject. His previous work is here: https://github.com/dhuseby/did-git-spec https://github.com/dhuseby/did-git-impl This project’s working fork: https://github.com/ibrahimel/did-git-impl The main sections of the project are updating the user configuration and the command handling when a signing or verifying operation occur.  Another aspect of the project is getting the changes accepted in the git community: The request for proposal has been sent to the git mailing list and can be tracked here. The commits that will be submitted as a patch can be found here. What was accomplished Milestones The project had many steps involved: Updating the git code base with a new generic signing interface Sending the first RFC to the git mailing list and receiving feedback Incorporating the changes depending on the received feedback Sending a second RFC to the mailing list … Still waiting for feedback Creating wrapper tools for signing (Indy signing tool and a template script) Challenges Getting to know the git code base from scratch and figure out which parts needed changing was a challenge at first. But the primary challenge we faced was getting the proposal pushed upstream in the git community. We have sent two RFCs and are still waiting for additional feedback. Technical Overview The following figure illustrate modification of git and the expected outcome of the project: What comes next This project can open the door to future signing tools integrations and maybe extended to projects other than git. The mentorship project can be extended in many ways: Create wrappers for additional signing tools like signify for example Write a wrapper for the Assuan protocol to add support for tools that use the Assuan library (like GPG & GPGSM for example) Broaden the project idea to tools other than git (Docker image signing for example) David Huseby will be creating a Hyperledger Lab for the continuity of the project. It will be used to track future milestones and help other persons contribute and broaden the project perspective. For more details, please see my complete project report here. View previous blog post Back to all blog posts View next blog post The latest community news in your inbox Select the checkboxes below for the monthly decentralized digest and dev/weekly newsletters About LF Decentralized Trust The Linux Foundation's flagship organization for the development and deployment of decentralized systems and technologies. About Members TAC Governing board Speakers bureau Staff FAQ Contact us Technologies Ledger technologies Interoperability Integration & implementation Decentralized identity Cryptographic tools & protocols Project matrix Labs Participate Why get involved? How to contribute Contribute to code Host your project with us Regional chapters Special interest groups Job board Deploy Certified service providers Vendor directory Training partners Resources Linux Foundation ID Logos & guidelines Trademarks & guidelines Charter Code of conduct Github repos Discord Wiki Mailing lists Report a security bug Learn Case studies Training & certifications Use case tracker Member webinars Insights Events Events Meetups Meeting calendar News Blog Announcements Newsletters Meeting Calendar Copyright © 2025 The Linux Foundation®. All rights reserved. LF Decentralized Trust is a trademark of The Linux Foundation. For a list of LF Decentralized Trust's trademarks, please see our Trademark Usage page. Linux is a registered trademark of Linus Torvalds. Privacy Policy and Terms of Use.