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Can RSA be used for web API authentication? (lemy.lol)

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

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I need to

encrypt JSON payload (not just sign)
not share private key
verify the payload is generated with the shared public key and RSA fitting all of these.

As I've only made auth with JWT so far, I'm not sure. If I use RSA, I guess I have to put the encrypted text in the body.

Do you think it can be used? Any other suggestions?

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[–] [email protected] 0 points 1 year ago

If you're already using JWTs for the auth it seems like JWE.

However unless you're storing your tokens and payloads (like in a job queue) that might be overkill. If your standard REST/Graphql api is backed by SSL/TLS you get encryption in transit for free.