Secrettxt

Secrettxt is a hypothetical secure text exchange protocol and accompanying library designed to enable end-to-end encrypted messaging across platforms. It emphasizes confidentiality, authenticity, and minimal metadata leakage, while remaining transport-agnostic so that implementations can use HTTP, WebSocket, or messaging queues.

The protocol uses a public-key cryptography model with a long-term identity key and ephemeral session keys. Messages are encrypted end-to-end and signed to verify sender identity. The design supports forward secrecy and optional metadata obfuscation to reduce leakage about who talks to whom and when.

The architecture comprises a cryptographic core, a transport-agnostic API, and a storage adapter for local message persistence. Key management features include key rotation, revocation, and secure onboarding of new devices. Implementations may provide client-side key storage and trusted device linking.

As a hypothetical construct, secrettxt serves primarily as an educational example. In practice, real systems would require rigorous security reviews, threat-model documentation, and interoperability testing before deployment outside controlled environments.

Related topics include end-to-end encryption, secure messaging protocols, and public-key cryptography. No official standard for secrettxt exists outside this article.