AuthenticatorAttestationResponse: getAuthenticatorData() method
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since October 2023.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The getAuthenticatorData() method of the AuthenticatorAttestationResponse interface returns an ArrayBuffer containing the authenticator data contained within the AuthenticatorAttestationResponse.attestationObject property.
This is a convenience function, created to allow easy access to the authenticator data without having to write extra parsing code to extract it from the attestationObject.
Syntax
getAuthenticatorData()
Parameters
None.
Return value
An ArrayBuffer with a byteLength of at least 37 bytes, which contains the data structure explained in Authenticator data.
This will be equivalent to the authenticator data contained within the AuthenticatorAttestationResponse.attestationObject property.
Examples
See Creating a public key credential for a detailed example.
Specifications
| Specification |
|---|
| Web Authentication: An API for accessing Public Key Credentials - Level 3 # dom-authenticatorattestationresponse-getauthenticatordata |