_, err = sshPubKeyAuth(newSSHCon, testKey)
	if err != nil {
		c.Fatalf("expected no error but got(%s)", err)
	}
}

// A user without an sshpubkey attribute in LDAP (here: fahim) should not be
// able to authenticate.
func (s *TestSuiteIAM) SFTPPublicKeyAuthNoPubKey(c *check) {
	keyBytes, err := os.ReadFile("./testdata/dillon_test_key.pub")
	if err != nil {
		c.Fatalf("could not read test key file: %s", err)
	}

     *         It contains the tickets retrieve from KDC.
     */
    @Override
    public Subject getSubject() {
        return this.subject;
    }

    /**
     * Get the user name which authenticate against to. If the default user
     * is used, Null will be returned.
     *
     * @return user name
     */
    public String getUser() {
        return this.user;
    }

    /**

     |
    <server>
      <id>deploymentRepo</id>
      <username>repouser</username>
      <password>repopwd</password>
    </server>
    -->

    <!-- Another sample, using keys to authenticate.
    <server>
      <id>siteServer</id>
      <privateKey>/path/to/private/key</privateKey>
      <passphrase>optional; leave empty if not used.</passphrase>
    </server>
    -->
  </servers>

    assertThat(response.body.string()).isEqualTo("ABCABCABC")
  }

  @Test
  fun authenticate() {
    server.enqueue(
      MockResponse(
        code = HttpURLConnection.HTTP_UNAUTHORIZED,
        headers = headersOf("www-authenticate", "Basic realm=\"protected area\""),
        body = "Please authenticate.",
      ),
    )
    server.enqueue(
      MockResponse(body = "Successful auth!"),
    )

  @Test
  fun javaNetAuthenticator() {
    val authenticator = JavaNetAuthenticator()
    val response = Response.Builder().build()
    var request: Request? = authenticator.authenticate(factory.newRoute(), response)
    request = authenticator.authenticate(null, response)
  }

  @Test
  fun javaNetCookieJar() {
    val cookieJar: JavaNetCookieJar = JavaNetCookieJar(newCookieHandler())
    val httpUrl = "".toHttpUrl()

В этом исключении мы включаем требуемые scopes (если есть) в виде строки, разделённой пробелами (используя `scope_str`). Эту строку со scopes мы помещаем в HTTP‑заголовок `WWW-Authenticate` (это часть спецификации).

{* ../../docs_src/security/tutorial005_an_py310.py hl[106,108:116] *}

## Проверка `username` и формата данных { #verify-the-username-and-data-shape }

#### Content Encryption

    bytesIn.writeByte(0x7d) // == Literal indexed ==
    // Indexed name (idx = 60) -> "www-authenticate"
    bytesIn.writeByte(0x05) // Literal value (len = 5)
    bytesIn.writeUtf8("Basic")
    hpackReader!!.readHeaders()
    assertThat(hpackReader!!.getAndResetHeaderList())
      .containsExactly(Header("www-authenticate", "Basic"))
  }

  @Test
  fun readLiteralHeaderWithIncrementalIndexingDynamicName() {

In diese Exception fügen wir (falls vorhanden) die erforderlichen Scopes als durch Leerzeichen getrennten String ein (unter Verwendung von `scope_str`). Wir fügen diesen String mit den Scopes in den Header `WWW-Authenticate` ein (das ist Teil der Spezifikation).

{* ../../docs_src/security/tutorial005_an_py310.py hl[106,108:116] *}

## Den `username` und das Format der Daten überprüfen { #verify-the-username-and-data-shape }

（类 `SecurityScopes` 的）`security_scopes` 对象还提供了单字符串类型的属性 `scope_str`，该属性是（要在本例中使用的）用空格分割的作用域。

此处还创建了后续代码中要复用（`raise`）的 `HTTPException` 。

该异常包含了作用域所需的（如有），以空格分割的字符串（使用 `scope_str`）。该字符串要放到包含作用域的 `WWW-Authenticate` 请求头中（这也是规范的要求）。

{* ../../docs_src/security/tutorial005.py hl[105,107:115] *}

## 校验 `username` 与数据形状

我们可以校验是否获取了 `username`，并抽取作用域。