🏠 New in High Baseline Support: Web authentication easy public key access

April 24, 2026

caniuse · mdn · spec

The getAuthenticatorData(), getPublicKey(), and getPublicKeyAlgorithm() methods of AuthenticatorAttestationResponse access credential data inside attestationObject without the need to parse it.

Source features

• api.AuthenticatorAttestationResponse.getAuthenticatorData [mdn]
• api.AuthenticatorAttestationResponse.getPublicKey [mdn]
• api.AuthenticatorAttestationResponse.getPublicKey.algorithm_es256 [mdn]
• api.AuthenticatorAttestationResponse.getPublicKeyAlgorithm [mdn]
• api.AuthenticatorAttestationResponse.getPublicKey.algorithm_eddsa [mdn]
• api.AuthenticatorAttestationResponse.getPublicKey.algorithm_rs256 [mdn]