The macOS app Secretive [1] stores SSH keys in the Secure Enclave. To make it work, they’ve selected an algorithm supported by the SE, namely ecdsa-sha2-nistp256.
I don’t think SE supports PQ algorithms, but would it be possible to use a “hybrid key” with a combined algorithm like mlkem768×ecdsa-sha2-nistp256, in a way that the ECDSA part is performed by the SE?
The macOS app Secretive [1] stores SSH keys in the Secure Enclave. To make it work, they’ve selected an algorithm supported by the SE, namely ecdsa-sha2-nistp256.
I don’t think SE supports PQ algorithms, but would it be possible to use a “hybrid key” with a combined algorithm like mlkem768×ecdsa-sha2-nistp256, in a way that the ECDSA part is performed by the SE?
[1]: https://github.com/maxgoedjen/secretive