KeyObject to JWK with v3

[bespokebob]

Is your feature proposal related to a problem? Please describe.

In v3, there does not seem to be any way to generate and export a key as a JWK. There is a utility to parse a JWK into a native key, but not the other way around.

Describe the solution you'd like

An exportJwk that takes KeyObject | CryptoKey and returns JWK

Describe alternatives you've considered

Stay on v2, or copy the keyObjectToJWK and supporting utils

Additional context

The Web Crypto API natively supports parsing and exporting keys as JWK. The Node Crypto API does not, though.

• i have searched the configuration section for this feature and couldn't find it
• i have searched the issues tracker on github for similar requests and couldn't find anything related.

[panva]

See this is tricky, since Web Cryptography API has this affordance i don't feel like putting this in for the other runtime.

How would you feel if, instead, there was a separate, node-specific module for KeyObject to JWK conversion?

[bespokebob]

How would you feel if, instead, there was a separate, node-specific module for KeyObject to JWK conversion?

I could live with that. I understand you're trying to keep the v3 API slimmed down (and coming from node-jose, I appreciate it). Though for users only importing the specific sub-modules they need, it doesn't seem like there would be a disadvantage to just including it in jose. It shouldn't increase the bundle size for anyone who doesn't need it in the browser.

[panva]

That's a fair point. I'll see what can be done. In the meantime, there are established modules for pem -> jwk conversion and since you have a keyObject at hand (see keyobject.export), you can use those for the time being.

[bespokebob]

That's a fair point. I'll see what can be done. In the meantime, there are established modules for pem -> jwk conversion and since you have a keyObject at hand (see keyobject.export), you can use those for the time being.

That's a good suggestion. Exporting the key and using https://npm.io/package/rsa-pem-to-jwk does what I need.

[panva]

@youngbob i think https://www.npmjs.com/package/@trust/keyto is a more general alternative, supporting more key types.

[panva]

Nevertheless, i'll put a util function in for KeyLike to JWK conversion

[panva]

https://github.com/panva/jose/releases/tag/v3.1.0

[bespokebob]

https://github.com/panva/jose/releases/tag/v3.1.0

Perfect, thanks!

[panva]

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