Verification SDK

The verification SDK provides server-side credential verification for Node.js applications, using the same Rust core via native bindings.

Installation

npm install @baseid/verify

Quick Start

import { createVerifier } from '@baseid/verify';

const verifier = createVerifier();

const result = await verifier.verifyJwt(jwtString);
console.log('Valid:', result.valid);
console.log('Issuer:', result.issuer);
console.log('Claims:', result.claims);

Verify with DID Resolution

Resolve the issuer’s DID to obtain the public key automatically:

const result = await verifier.verifyWithDidResolution(jwtString);
// Automatically fetches the issuer's DID document
// and extracts the public key for verification

Verify SD-JWT

const result = await verifier.verifySdJwt(sdJwtString, nonce);
console.log('Disclosed claims:', result.disclosedClaims);

Express Middleware

import express from 'express';
import { verifyMiddleware } from '@baseid/verify';

const app = express();

app.post('/present',
    verifyMiddleware({ requiredType: 'UniversityDegree' }),
    (req, res) => {
        const { claims } = req.verifiedCredential;
        res.json({ accepted: true, claims });
    }
);

Configuration

const verifier = createVerifier({
    trustedIssuers: ['did:web:university.example.com'],
    maxClockSkew: 60, // seconds
    checkRevocation: true,
});