PublicKeyCredentialRequestOptions.allowCredentials

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句法
范例
规范
浏览器兼容性
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安全上下文
此特征只可用于安全上下文 (HTTPS)，在某些或所有支持浏览器 .

allowCredentials is an optional property of the PublicKeyCredentialRequestOptions dictionary which indicates the existing credentials acceptable for retrieval. This is an 数组 of credential descriptors.

注意： PublicKeyCredentialCreationOptions.excludeCredentials may be used during the creation of the credentials in order to avoid creating new credentials for an existing user with existing public key credential. Contrary to allowCredentials , it is used to filter out credentials.

句法

allowCredentials = publicKeyCredentialRequestOptions.allowCredentials

值

数组 whose elements are objects with the following properties:

type

A string describing type of public-key credential to be created. As of this writing (March 2019), only


								"public-key"

may be used.

id


									BufferSource

matching an existing public key credential identifier (


									PublicKeyCredential.rawId

). This identifier is generated during the creation of the


								PublicKeyCredential

实例。

传输 可选


									数组

of strings describing the possible transports between the client and the authenticator. The value of the strings may be:

"usb" : the authenticator can be contacted via a removable USB link
"nfc" : the authenticator may be used over NFC (Near Field Communication)
"ble" : the authenticator may be used over BLE (Bluetooth Low Energy)
"internal" : the authenticator is specifically bound to the client device (cannot be removed).

If the authenticator does not contain any of these public key credentials, the client will throw a DOMException "NotAllowedError" .

范例

var options = {
  allowCredentials: [
    {
      transports: ["usb"],
      type: "public-key",
      id: new Uint8Array(26) // actually provided by the server
    },
    {
      transports: ["internal"],
      type: "public-key",
      id: new Uint8Array(26) // actually provided by the server
    }
  ],
  challenge: new Uint8Array([/* bytes sent from the server */])
};
navigator.credentials.get({ "publicKey": options })
    .then(function (credentialInfoAssertion) {
    // send assertion response back to the server
    // to proceed with the control of the credential
}).catch(function (err) {
     console.error(err);
});

规范

规范	状态	注释
Web Authentication: An API for accessing Public Key Credentials Level 1 The definition of 'allowCredentials' in that specification.	推荐	初始定义。

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`allowCredentials`	Chrome 67	Edge ≤79	Firefox 60	IE ?	Opera Yes	Safari 13	WebView Android 67	Chrome Android 67	Firefox Android ?	Opera Android Yes	Safari iOS 13.3	Samsung Internet Android No

图例

完整支持
不支持
兼容性未知 ?
实验。期望将来行为有所改变。

另请参阅

PublicKeyCredentialCreationOptions.excludeCredentials which is used to filter out existing credentials during creation and avoid creating new credentials for an existing user

元数据

最后修改： Jul 14, 2020

Web 身份验证 API
PublicKeyCredentialRequestOptions
特性
1. allowCredentials
2. challenge
3. extensions
4. rpId
5. timeout
6. userVerification
Related pages for Web Authentication API

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句法

值

范例

规范

浏览器兼容性

图例

另请参阅

相关话题