PublicKeyCredential: rawId property

{{APIRef("Web Authentication API")}}{{securecontext_header}}

The rawId read-only property of the {{domxref("PublicKeyCredential")}} interface is an {{jsxref("ArrayBuffer")}} object containing the identifier of the credentials.

The {{domxref("PublicKeyCredential.id")}} property is a base64url encoded version of this identifier.

[!NOTE] This property may only be used in top-level contexts and will not be available in an {{HTMLElement("iframe")}} for example.

Value

An {{jsxref("ArrayBuffer")}} containing the identifier of the credentials. This identifier is expected to be globally unique and is appointed for the current PublicKeyCredential and its associated {{domxref("AuthenticatorAssertionResponse")}}.

Examples

const options = {
  challenge: new Uint8Array(26) /* from the server */,
  rp: {
    name: "Example CORP",
    id: "login.example.com",
  },
  user: {
    id: new Uint8Array(26) /* To be changed for each user */,
    name: "[email protected]",
    displayName: "Carina Anand",
  },
  pubKeyCredParams: [
    {
      type: "public-key",
      alg: -7,
    },
  ],
};

navigator.credentials
  .create({ publicKey: options })
  .then((pubKeyCredential) => {
    const rawId = pubKeyCredential.rawId;
    // Do something with rawId
  })
  .catch((err) => {
    // Deal with any error
  });

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}