PublicKeyCredential: rawId property

Secure context

The rawId read-only property of the PublicKeyCredential interface is an ArrayBuffer object containing the identifier of the credentials.

The 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 <iframe> for example.

Value

An 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 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: "canand@example.com",
    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

Browser compatibility