@iden3/js-iden3-auth/dist/node/esm/circuits/ownershipVerifier.js

iden3-auth implementation in JavaScript

import { DID } from '@iden3/js-iden3-core';
export class IDOwnershipPubSignals {
    async verifyIdOwnership(sender, challenge) {
        const senderId = DID.idFromDID(DID.parse(sender));
        if (senderId.string() !== this.userId.string()) {
            throw new Error(`sender id is not used for proof creation, expected ${senderId}, user from public signals: ${this.userId.string()}`);
        }
        if (challenge !== this.challenge) {
            throw new Error(`challenge is not used for proof creation, expected ${challenge}, challenge from public signals: ${this.challenge}  `);
        }
    }
}