* Die API überprüft den `username` und das `password` und antwortet mit einem „Token“ (wir haben davon noch nichts implementiert).
    * Ein „Token“ ist lediglich ein String mit einem Inhalt, den wir später verwenden können, um diesen Benutzer zu verifizieren.
    * Normalerweise läuft ein Token nach einiger Zeit ab.

  // Status is filled in by the server and indicates whether the token can be authenticated.
  // +optional
  optional TokenReviewStatus status = 3;
}

// TokenReviewSpec is a description of the token authentication request.
message TokenReviewSpec {
  // Token is the opaque bearer token.
  // +optional
  optional string token = 1;

  // Audiences is a list of the identifiers that the resource server presented

time="2020-07-12T20:45:50Z" level=info msg="config response types accepted: [code token id_token]"
time="2020-07-12T20:45:50Z" level=info msg="config using password grant connector: local"
time="2020-07-12T20:45:50Z" level=info msg="config signing keys expire after: 3h0m0s"
time="2020-07-12T20:45:50Z" level=info msg="config id tokens valid for: 3h0m0s"
time="2020-07-12T20:45:50Z" level=info msg="listening (http) on 0.0.0.0:5556"
```

message TokenRequestStatus {
  // Token is the opaque bearer token.
  optional string token = 1;

  // ExpirationTimestamp is the time of expiration of the returned token.
  optional k8s.io.apimachinery.pkg.apis.meta.v1.Time expirationTimestamp = 2;
}

// TokenReview attempts to authenticate a token to a known user.
// Note: TokenReview requests may be cached by the webhook token authenticator

  // tokens it is mounting volume for to do necessary authentication. Kubelet
  // will pass the tokens in VolumeContext in the CSI NodePublishVolume calls.
  // The CSI driver should parse and validate the following VolumeContext:
  // "csi.storage.k8s.io/serviceAccount.tokens": {
  //   "<audience>": {
  //     "token": <token>,
  //     "expirationTimestamp": <expiration timestamp in RFC3339>,

)

// UnmarshalXML - decodes XML data.
func (tag *Tag) UnmarshalXML(d *xml.Decoder, start xml.StartElement) (err error) {
	var keyAlreadyParsed, valueAlreadyParsed bool
	for {
		// Read tokens from the XML document in a stream.
		t, err := d.Token()
		if err != nil {
			if err == io.EOF {
				break
			}
			return err
		}

		if se, ok := t.(xml.StartElement); ok {
			var s string

<img src="/img/tutorial/security/image11.png">

## JWT-Token mit Scopes

Ändern Sie nun die Token-*Pfadoperation*, um die angeforderten Scopes zurückzugeben.

Wir verwenden immer noch dasselbe `OAuth2PasswordRequestForm`. Es enthält eine Eigenschaft `scopes` mit einer `list`e von `str`s für jeden Scope, den es im Request erhalten hat.

Und wir geben die Scopes als Teil des JWT-Tokens zurück.

/// danger | "Gefahr"

  // tokens it is mounting volume for to do necessary authentication. Kubelet
  // will pass the tokens in VolumeContext in the CSI NodePublishVolume calls.
  // The CSI driver should parse and validate the following VolumeContext:
  // "csi.storage.k8s.io/serviceAccount.tokens": {
  //   "<audience>": {
  //     "token": <token>,
  //     "expirationTimestamp": <expiration timestamp in RFC3339>,

<img src="/img/tutorial/security/image11.png">

## JWT token with scopes

Now, modify the token *path operation* to return the scopes requested.

We are still using the same `OAuth2PasswordRequestForm`. It includes a property `scopes` with a `list` of `str`, with each scope it received in the request.

And we return the scopes as part of the JWT token.

/// danger

			return &secret, nil
		}
	}

	// finally, create the sa token secret manually
	// https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/#manually-create-a-service-account-api-token
	// TODO ephemeral time-based tokens are preferred; we should re-think this
	log.Infof("Creating token secret for service account %q", serviceAccount.Name)
	secretName := tokenSecretName(serviceAccount.Name)