YubiKey 5.8 extends passkeys from secure authentication to verifiable authorization

Yubico has officially released YubiKey 5.8, marking an expansion of the role of the passkey from secure authentication to include hardware-backed, verifiable authorization for digital actions. This release also brings full support for the CTAP 2.3 standard and preview support for the emerging WebAuthn signing extension, providing developers with modern standards to implement secure workflows. These enhancements address complex enterprise environments by delivering hardware-backed digital signatures and enabling use cases such as document signing, identity wallets, workflow approvals, and other high-assurance transactions via standardized APIs. Following these advances, YubiKey 5.8 increases scalability and privacy with expanded Enterprise Attestation, allowing a single device to maintain up to 16 unique Relying Party IDs across multiple environments and providers while preserving user privacy. The update also extends support for new digital identity initiatives, including digital ident...