FIDO2 PRF with TPM and Fingerprint Auth for Confer on Linux

Show HN: FIDO2 PRF with TPM and Fingerprint Auth for Confer on Linux

FIDO2 PRF with TPM and Fingerprint Auth for Confer on Linux is active in the show hn launch space.

Profile

I wanted to try Confer — Moxie Marlinspike’s private AI chat — but I don’t have a Mac lying around. Since it requires isUserVerifyingPlatformAuthenticatorAvailable(), and most Linux setups don’t qualify, I put together a minimal platform authenticator that works with what I have: a TPM and a fingerprint reader.It’s a small bridge: Chrome extension + Go backend, using the TPM for key storage and fprintd for user verification.Write-up: https://vitorpy.com/blog/2025-12-25-confer-to-linux-tpm-fido... Code: https://github.com/vitorpy/tpm-fido2-prfNothing fancy. No guarantees — it was a quick hack. But if it helps someone else get Confer working on Linux :)

Within the show hn launch space, the company focuses on its core offering rather than a broad product line.

Directory data places it at the Show HN launch stage.

Website: vitorpy.com/blog/2025-12-25-confer-to-linux-tpm-fido2-prf