fix: only import RSA, EC and oct successfully

lib/jwk/import.js

@@ -28,14 +28,17 @@ const importKey = (key, parameters) => {
  }
 
  if (key instanceof KeyObject) {
- if (key.type === 'private') {
- privateKey = key
- } else if (key.type === 'public') {
- publicKey = key
- } else if (key.type === 'secret') {
- secret = key
- } else {
- throw new errors.JOSENotSupported()
+ switch (key.type) {
+ case 'private':
+ privateKey = key
+ break
+ case 'public':
+ publicKey = key
+ break
+ case 'secret':
+ secret = key
+ break
+ default:
  }
  } else if ('kty' in key && key.kty === 'oct') { // symmetric key <Object>
  try {
@@ -69,20 +72,23 @@ const importKey = (key, parameters) => {
  } catch (err) {}
  }
 
- if (!privateKey && !publicKey && !secret) {
- throw new errors.JWKImportFailed('import failed')
- }
-
  const keyObject = privateKey || publicKey || secret
 
- switch (keyObject.asymmetricKeyType) {
- case 'rsa':
- return new RSAKey(keyObject, parameters)
- case 'ec':
- return new ECKey(keyObject, parameters)
- default:
- return new OctKey(keyObject, parameters)
+ if (privateKey || publicKey) {
+ switch (keyObject.asymmetricKeyType) {
+ case 'rsa':
+ return new RSAKey(keyObject, parameters)
+ case 'ec':
+ return new ECKey(keyObject, parameters)
+ default:
+ // TODO: test this branch once https://github.com/nodejs/node/pull/26319 is released
+ throw new errors.JOSENotSupported('only RSA ane EC asymmetric keys are supported')
+ }
+ } else if (secret) {
+ return new OctKey(keyObject, parameters)
  }
+
+ throw new errors.JWKImportFailed('import failed')
 }
 
 module.exports = importKey