Converting PEM to JWK in V3

[justin0108]

I am migrating from V2 to V3.
Previously in V2 I am able to use JWK.asKey to convert the file content to JWK.
In V3 api, I cannot find such API anymore.
parseJWK requires an object but all I have is the PEM contents.

[panva]

crypto.createPublicKey or crypto.createPrivateKey to end up with KeyObject then use jose/jwk/from_key_like to get a JWK.

[justin0108]

Thank you so much for the prompt reply.
I have tested its working fine according to your suggestion.
In case anybody face the same issue, below is the code snippet I used

const pemPublicKey = Buffer.from(pemPublicKeyBase64String, 'base64').toString();
const cryptoKeyObj = crypto.createPublicKey(pemPublicKey);
const jwk = await fromKeyLike(cryptoKeyObj);
const rsaPublicKey = await parseJwk(jwk, 'RS256');

Another thing to note is the node version.
You need minimum version of node 12.19.0.
Originally I was facing issue of importing the module as I was using 12.14.0

[panva]

You need minimum version of node 12.19.0.
Originally I was facing issue of importing the module as I was using 12.14.0

That's documented in the readme.

[justin0108]

Yup that's right. I miss that out and proceed to try the library.
So I pointed it here again in case anybody stumble the same issue with importing.
Initially I didn't expect the node version will cause importing issue.
Thanks

[rambabusaravanan]

@panva How do I use this in browser.

I receive a rsa public key string and I'll need to create JWE. Trying to parse JWK from string but crypto.createPublicKey is available only in nodejs api and not in browser api. Even it's not available in 'crypto-browserify'

[panva]

https://github.com/panva/jose/blob/v3.11.3/docs/types/types.keylike.md

use https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/importKey

[rambabusaravanan]

Thanks a lot @panva for very quick reply