@zkp2p/reclaim-witness-sdk
Version:
<div> <div> <img src="https://raw.githubusercontent.com/reclaimprotocol/.github/main/assets/banners/Attestor-Core.png" /> </div> </div>
64 lines • 4.95 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.assertValidAuthRequest = assertValidAuthRequest;
exports.createAuthRequest = createAuthRequest;
const ethers_1 = require("ethers");
const config_1 = require("../config");
const api_1 = require("../proto/api");
const env_1 = require("../utils/env");
const error_1 = require("../utils/error");
const generics_1 = require("../utils/generics");
const signatures_1 = require("../utils/signatures");
async function assertValidAuthRequest(request, signatureType) {
const publicKey = (0, env_1.getEnvVariable)('AUTHENTICATION_PUBLIC_KEY');
// nothing to verify
if (!request) {
// if pub key is provided -- but user didn't attempt to
// authenticate, then we should throw an error
if (publicKey) {
throw new error_1.AttestorError('ERROR_AUTHENTICATION_FAILED', 'User must be authenticated');
}
return;
}
if (!publicKey) {
throw new error_1.AttestorError('ERROR_BAD_REQUEST', 'The attestor is not configured for authentication');
}
const { signature, data } = request;
if (!data) {
throw new error_1.AttestorError('ERROR_AUTHENTICATION_FAILED', 'Missing data in auth request');
}
if (data.expiresAt < (0, generics_1.unixTimestampSeconds)()) {
throw new error_1.AttestorError('ERROR_AUTHENTICATION_FAILED', 'Authentication request has expired');
}
const proto = api_1.AuthenticatedUserData.encode(data).finish();
const signatureAlg = signatures_1.SIGNATURES[signatureType];
const address = signatureAlg.getAddress(await ethers_1.ethers.utils.arrayify(publicKey));
const verified = await signatureAlg
.verify(proto, signature, address);
if (!verified) {
throw new error_1.AttestorError('ERROR_AUTHENTICATION_FAILED', 'Signature verification failed');
}
}
/**
* Create an authentication request with the given data and private key,
* which can then be used to authenticate with the service.
*/
async function createAuthRequest(_data, privateKey) {
const createdAt = (0, generics_1.unixTimestampSeconds)();
const data = {
createdAt,
expiresAt: createdAt + config_1.DEFAULT_AUTH_EXPIRY_S,
id: '',
hostWhitelist: [],
..._data,
};
const proto = api_1.AuthenticatedUserData.encode(data).finish();
const signature = await signatures_1.SelectedServiceSignature
.sign(proto, privateKey);
const request = {
data,
signature
};
return request;
}
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