[password4321]

> relaying auth requests to your phone for approval and storing secrets in the Secure Enclave

Like the acquired/abandoned https://github.com/kryptco/kr [key stored in a [...] mobile app] with iOS and Android apps all under an "All Rights Reserved"-source license?

Also, newer Macs have a Secure Enclave (supports 256-bit secp256r1 ECC keys):

https://github.com/maxgoedjen/secretive [storing and managing SSH keys in the Secure Enclave [...] or a Smart Card (such as a YubiKey)]

https://github.com/sekey/sekey [Use Touch ID / Secure Enclave for SSH Authentication!]

[danstiner]

Yep exactly, Krypton looked interesting, sorry to see it's dead.

And yep Apple is way ahead on this imo, the touch sensor securely communicates with the Secure Enclave, I'm not aware of other laptop hardware doing that. (https://support.apple.com/en-bh/guide/security/sec067eb0c9e/...)

I'd love to have something equivalent for Linux, but given that requires hardware support I think relaying auth requests to your phone is the closest equivalent.