AuthenticatorAttestationResponse: getPublicKeyAlgorithm() method
Baseline 2023
Newly available
Since October 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
The getPublicKeyAlgorithm() method of the AuthenticatorAttestationResponse interface returns a number that is equal to a COSE Algorithm Identifier, representing the cryptographic algorithm used for the new credential.
This is a convenience function created to allow easy access to the algorithm type. This information will need to be stored in order to verify future authentication operations (i.e., using navigator.credentials.get()).
Syntax
getPublicKeyAlgorithm()
Parameters
None.
Return value
A number that is equal to a COSE Algorithm Identifier, representing the cryptographic algorithm used for the new credential.
Examples
See Creating a public key credential using the WebAuthn API for a detailed example.
Specifications
| Specification |
|---|
| Web Authentication: An API for accessing Public Key Credentials - Level 3 # dom-authenticatorattestationresponse-getpublickeyalgorithm |
Browser compatibility
BCD tables only load in the browser