Using Apple p8 private keys

[ValYouW]

Hi,

I am trying to create jws signed with a private key file (.p8) downloaded from apple, when I try to import the key into a keystore I get error: no importer for key

var keyStore = jose.JWK.createKeyStore();
var key = fs.readFileSync('mykey.p8');
await keyStore.add(key, 'pem');

I tried all other forms (private/pkcs8 etc) no luck as well. Is it something that can be done? Thx.

[serdarde]

Hi @ValYouW, I am getting the same error. Did you find a solution?

[ValYouW]

Hi @serdarde I don't recall exactly my scenario when having this issue, but now all api calls to Apple are done using npm package jws. Example:

var fs = require('fs'),
	jws = require('jws');

const KEY_ID = '2X9R4HXF34'; // Your private key ID from App Store Connect
let bundleId = 'com.mycomp.myapp';
let signKey = fs.readFileSync(p8KeyFile).toString();

const timeNow = Math.floor(Date.now() / 1000) - 60;
var header = { alg: 'ES256', kid: KEY_ID, typ: 'JWT' };
const payload = {
	iss: '57246542-96fe-1a63-e053-0824d011072a', // Your issuer ID from the Keys page in App Store Connect
	iat: timeNow,
	exp: timeNow + 600,
	aud: 'appstoreconnect-v1',
	bid: bundleId,
};

let signature = jws.sign({ header, payload, secret: signKey });

let headers = {Authorization: `Bearer ${signature}`};
let url = 'https://api.storekit.itunes.apple.com/inApps/v1/lookup/78678657865';

[serdarde]

Hi @ValYouW, I have already tried the JWS, but it also doesn't support the curve I want (brainpoolp256r1). Now I am writing it manually. Thank you 🙏🏼