Show HN: Mistis – a decoupled, E2EE protocol for mid-call user authentication

Category: security

Tags: authentication, e2ee, deepfake-detection, protocol, mobile

Score: 5.7/10 (Innovation: 7, Technical: 5, Documentation: 2, Utility: 5)

Mistis is a proprietary protocol for mid-call identity verification to prevent real-time audio deepfake impersonation. It uses a decoupled E2EE channel inspired by 3DS authentication, with client-side cryptographic operations and a relay server that handles no PII. The approach is novel but documentation is minimal, and adoption requires a mobile app and prior credential pairing.

Target audience: security engineers, backend developers, mobile developers, telecom engineers

Repository: https://mistis.tech

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