Support parsing JWE with RSA-OAEP

[ptman]

Seems like #78 removed this ability that existed in v3. Given that ParseSignedAndEncrypted() now requires specifying which algorithms are allowed, wouldn't this be the perfect way to not include public key crypto if desired? I receive RSA-OAEP encrypted JWE from a source that cannot be changed, and am unable to parse them using v4.

[jsha]

Note that #78 affects only the JWT library. If you just need to decrypt a JWE, you should be able to use jose.ParseEncryptedCompact (as opposed to jwt.ParseSignedAndEncrypted(). I'd be curious to hear more about your use case and whether it's more JWT-like or JWE-like. Are you using the claims features?

[ptman]

It's a JWT with claims. Coming from IDP tied to the national electronic authentication infrastructure. Finnish Trust Network.