RSA key in JWK format can't be imported with createPublicKey()

[gnarea]

Version

v16.13.0

Platform

Linux relaybox 5.15.0-52-generic #58-Ubuntu SMP Thu Oct 13 08:03:55 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

Subsystem

crypto

What steps will reproduce the bug?

// Taken from https://www.rfc-editor.org/rfc/rfc5702.html#section-6.1
const modulus = 'wVwaxrHF2CK64aYKRUibLiH30KpPuPBjel7E8ZydQW1HYWHfoGmidzC2RnhwCC293hCzw+TFR2nqn8OVSY5t2Q==';
const exponent = 'AQAB';
createPublicKey({key: { n: modulus, e: exponent }, format: 'jwk'}); // Error thrown; see below

How often does it reproduce? Is there a required condition?

Always

What is the expected behavior?

PublicKeyObject instance is returned.

What do you see instead?

TypeError: The "key.key" property must be of type string or an instance of ArrayBuffer, Buffer, TypedArray, DataView, KeyObject, or CryptoKey. Received an instance of Object
    at new NodeError (node:internal/errors:371:5)
    at prepareAsymmetricKey (node:internal/crypto/keys:528:13)
    at createPublicKey (node:internal/crypto/keys:589:5)
    at Object.<anonymous> (/home/gus/repos/dnssec-verifier-js/src/lib/utils/crypto.spec.ts:53:25)
    at Promise.then.completed (/home/gus/repos/dnssec-verifier-js/node_modules/jest-circus/build/utils.js:333:28)
    at new Promise (<anonymous>)
    at callAsyncCircusFn (/home/gus/repos/dnssec-verifier-js/node_modules/jest-circus/build/utils.js:259:10)
    at _callCircusTest (/home/gus/repos/dnssec-verifier-js/node_modules/jest-circus/build/run.js:277:40)
    at _runTest (/home/gus/repos/dnssec-verifier-js/node_modules/jest-circus/build/run.js:209:3)
    at _runTestsForDescribeBlock (/home/gus/repos/dnssec-verifier-js/node_modules/jest-circus/build/run.js:97:9)

However, key must be an object since we're trying to import the key by specifying its exponent and modulus.

Additional information

No response

[panva]

Hey Gus ;)

The key.key must be a valid JWK for the import to kick in (FYI the latest v16.x would also give you a more useful error message).

const modulus = 'wVwaxrHF2CK64aYKRUibLiH30KpPuPBjel7E8ZydQW1HYWHfoGmidzC2RnhwCC293hCzw+TFR2nqn8OVSY5t2Q==';
const exponent = 'AQAB';
const kty = 'RSA'
createPublicKey({key: { n: modulus, e: exponent, kty }, format: 'jwk'}); // 🎉 

[gnarea]

Hey Filip! 👋🏾 I hope you're well! 🙌🏾

Thank you so much for looking into this!. Indeed, adding the kty made it all work as expected! I'll close the (non-)issue in that case. :)