Show HN: FIDO2 PRF with TPM and Fingerprint Auth for Confer on Linux (vitorpy.com)

A new project aims to enable platform authentication for Linux users through a novel implementation of the FIDO2 PRF (Pseudo-Random Function) extension, specifically for the end-to-end encrypted AI chat service, Confer.to. This solution bypasses the need for traditional password and server-side key storage by relying on biometric authentication through fingerprints. While systems like Windows Hello and macOS Touch ID offer robust platform support, Linux has struggled with the lack of integrated authenticators, limiting users' access to these advanced security features. The proposed solution consists of a two-component system: a native Go application that utilizes the system’s TPM (Trusted Platform Module) to implement FIDO2/CTAP2, and a Chrome extension that facilitates interaction with WebAuthn API calls, effectively simulating a platform authenticator. This setup allows Linux users to derive encryption keys securely from their fingerprints, leveraging hardware-backed security without exposing sensitive keys to external systems. As the landscape of biometric authentication continues to evolve, this initiative not only addresses significant gaps in Linux security but also showcases the potential for integrating advanced encryption standards into AI-driven applications, promoting a more secure user experience.