sd-jwt-js-qrcode

A toolkit for simulating Selective Disclosure JSON Web Tokens (SD-JWT) workflows using QR codes. This repository demonstrates the interactions between issuer, holder, and verifier roles in a decentralized identifier (DID) ecosystem. The toolkit enables encoding, selective disclosure, issuance and verification of verifiable credentials (VC) and presentations (VP) through QR code interactions.

Features

• SD-JWT Workflow Simulation: Issue, hold, and verify credentials using SD-JWT.
• QR Code Integration: Encode and decode credential data for offline and secure interactions.
• Custom Claims Support: Specify claims and selective disclosure preferences.
• Express Backend: Simulates issuer, holder, and verifier endpoints.
• React Frontend: Interactive UI for holder functionalities and QR code handling.

Basic Workflow

1. Issuer: Issues an SD-JWT containing claims, disclosures, and selective disclosure settings.
2. Holder: Receives and manages the SD-JWT. Selects claims for selective disclosure and generates a verifiable presentation (VP).
3. Verifier: Decodes and verifies the VP to validate the disclosed claims.

Etc.

• Scanning the QR code can be simulated by clicking on it.

Development

Build

cd frontend
npm install
cd ../backend
npm install

Run simulation

In backend directory,

tsc
npm start

In frontend directory,

tsc
npm run build
npm start

Further Plan

Connection to Wallet

• receiving VC using Wallet by scanning QR code.
• generating the QR code of VP in the Wallet and show it to verifier offline.