/**
     * The key for user roles in the request attribute.
     */
    protected static final String USER_ROLES = "userRoles";

    /**
     * The cached cipher for encryption and decryption.
     */
    protected CachedCipher cipher;

    /**
     * The separator for values in the role string.
     */
    protected String valueSeparator = "\n";

    /**

## Changelog since v1.32.3

## Changes by Kind

### Bug or Regression

- Fix a bug where kube-apiserver could emit an further watch even even if decryption failed for earlier event and it was not emitted. ([#131159](https://github.com/kubernetes/kubernetes/pull/131159), [@wojtek-t](https://github.com/wojtek-t)) [SIG API Machinery and Etcd]

- Fix a bug where kube-apiserver could emit an further watch even even if decryption failed for earlier event and it was not emitted. ([#131020](https://github.com/kubernetes/kubernetes/pull/131020), [@wojtek-t](https://github.com/wojtek-t)) [SIG API Machinery and Etcd]