2FA OnChain Auth

A private on-chain 2FA system utilizing passkeys and fhEVM. A decentralised alternative to traditional 2FA apps like Google Authenticator.

A comprehensive on-chain 2FA solution that leverages FHE on fhEVM to generate and verify TOTP codes in a privacy-preserving manner. This will allow decentralized applications to implement robust two-factor authentication without relying on centralized services or exposing user secrets.

The key innovation lies in using FHE to perform encrypted operations on the user's secret key, enabling on-chain TOTP generation and verification without ever decrypting the key. This enhances security and aligns with the core principles of decentralization and user sovereignty.

Authenticator Flow