📄️ Overview
The Authentication Layer of Interstellar is responsible for verifying user identity and validating intent across sensitive operations such as transaction approvals and account recovery. It leverages both biometric factors and hardware-backed signatures via the device’s Secure Element (SE).
📄️ TAVP Protocol
The Trusted Action Validation Protocol (TAVP) — formerly referred to as Trusted Transaction Validation Protocol (TTVP) — enforces user intent verification and transaction-level authentication inside a Trusted Execution Environment (TEE). It enables DSP-SCA-compliant validation by binding biometric confirmation and user input directly to the device’s Secure Element (SE), ensuring that sensitive actions are cryptographically confirmed by the user.
📄️ Beyond Traditional Authenticators
Traditional 2FA solutions like Google Authenticator and Microsoft Authenticator rely on static, time-based one-time passwords (TOTP). While simple to deploy, these methods have significant limitations:
📄️ Passkey-Compatible Authentication
Interstellar accounts are designed to be compatible with the WebAuthn/Passkey standard at the cryptographic level, while avoiding centralized credential anchors and external attestation services. This design allows users to benefit from secure, biometric-first authentication on mobile devices—without relying on custodial wallets or third-party identity providers.