### SIG Auth

### External credential providers

# HTTP 基础授权

最简单的用例是使用 HTTP 基础授权（HTTP Basic Auth）。

在 HTTP 基础授权中，应用需要请求头包含用户名与密码。

如果没有接收到 HTTP 基础授权，就返回 HTTP 401 `"Unauthorized"` 错误。

并返回含 `Basic` 值的请求头 `WWW-Authenticate`以及可选的 `realm` 参数。

HTTP 基础授权让浏览器显示内置的用户名与密码提示。

输入用户名与密码后，浏览器会把它们自动发送至请求头。

## 简单的 HTTP 基础授权

* 导入 `HTTPBasic` 与 `HTTPBasicCredentials`
* 使用 `HTTPBasic` 创建**安全概图**
* 在*路径操作*的依赖项中使用 `security`
* 返回类型为 `HTTPBasicCredentials` 的对象：

- The following features are unconditionally enabled and the corresponding `--feature-gates` flags have been removed: `PodPriority`,...

Requests to a deprecated API are returned with a warning containing a target removal release and any replacement API.
Warnings can also be returned by [admission webhooks](https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/#admissionreview-response-warning),

**Note**: This only impacts the cluster if the ServiceAccount admission plugin is used (most cluster should have this on by default as recommended in https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/#serviceaccount), the `kubernetes.io/enforce-mountable-secrets` annotation is used by a service account (this annotation is not added by default), and Pods are using ephemeral containers.

                    session.removeAttribute(SAML_STATE);
                    try {
                        final Auth auth = new Auth(getSettings(), request, response);
                        auth.processResponse();

                        if (!auth.isAuthenticated()) {
                            if (logger.isDebugEnabled()) {
                                logger.debug("Authentication failed.");

- Temporary credentials have a limited lifetime, there is no need to rotate them or explicitly revoke them. Expired temporary credentials cannot be reused.

## Identity Federation

| AuthN                                                                                  | Description                                                                                                                                   |

### API Change

- Add auth API to get self subject attributes (new selfsubjectreviews API is added). 
  The corresponding command for kubctl is provided - `kubectl auth whoami`. ([#111333](https://github.com/kubernetes/kubernetes/pull/111333), [@nabokihms](https://github.com/nabokihms)) [SIG API Machinery, Auth, CLI and Testing]

- DRA: new API and several new features ([#125488](https://github.com/kubernetes/kubernetes/pull/125488), [@pohly](https://github.com/pohly)) [SIG API Machinery, Apps, Auth, CLI, Cluster Lifecycle, Etcd, Node, Release, Scheduling, Storage and Testing]