lestrrat-go/jwx v2.0.15

on GitHub

v2.0.15 19 20 Oct 2023
[Bug fixes]
  * [jws] jws.Sign() now properly check for valid algorithm / key type pair when
    the key implements crypto.Signer. This was caused by the fact that when 
    jws.WithKey() accepted keys that implemented crypto.Signer, there really
    is no way to robustly check what algorithm the crypto.Signer implements.

    The code has now been modified to check for KNOWN key types, i.e. those
    that are defined in Go standard library, and those that are defined in
    this library. For example, now calling jws.Sign() with jws.WithKey(jwa.RS256, ecdsaKey)
    where ecdsaKey is either an instance of *ecdsa.PrivateKey or jwk.ECDSAPrivateKey
    will produce an error.

    However, if you use a separate library that wraps some KMS library which implements
    crypto.Signer, this same check will not be performed due to the fact that
    it is an unknown library to us. And there's no way to query a crypto.Signer
    for its algorithm family.