The Hachimail Protocol.
A decentralized, zero-knowledge messaging architecture for sovereign communication implementation.
00. Abstract
We propose a peer-to-peer messaging system that eliminates the need for trusted third parties. Current electronic mail protocols (SMTP, IMAP) rely on centralized authorities that inherently compromise user privacy through metadata retention and content scanning. Hachimail introduces a double-ratchet encryption mechanism layered over a distributed hash table (DHT) based storage network, ensuring that neither message content nor relationship graphs can be reconstructed by any single entity. By integrating local-first AI models for spam filtering and categorization, we restore user sovereignty without sacrificing modern utility.
01.The Centralization Trap
The fundamental promise of the internet was decentralization. Yet, email—the digital equivalent of a public utility—has collapsed into a triopoly of providers. These entities trade free service for total surveillance access.
- Metadata Sovereignty: Even "encrypted" services often leak sender/receiver graph data.
- Censorship Resistance: Centralized providers can—and do—deplatform users at the protocol level.
- AI Training: Your personal correspondence is currently being used to train the very models that will replace you.
02.Architecture Overview
Hachimail is not a server; it is a protocol. The network serves as a "dead drop" system where encrypted blobs are deposited and retrieved using ephemeral keys.
[ APPLICATION LAYER ] <-- React/Electron Client (Local AI) ----------------------------------------------------------- [ ENCRYPTION LAYER ] <-- Signal Double-Ratchet + PQ-NTRU ----------------------------------------------------------- [ TRANSPORT LAYER ] <-- QUIC / libp2p streams ----------------------------------------------------------- [ STORAGE LAYER ] <-- IPFS / Arweave Shards
2.1 Quantum-Resistant Handshakes
We anticipate the breakdown of RSA-2048 within the decade. Hachimail implements CRYSTALS-Kyber for key encapsulation mechanisms (KEM), ensuring that messages engaged today cannot be decrypted retroactively by future quantum actors ("store now, decrypt later" attacks).
03.Bio-Metric Identity & Anonymity
Identity on Hachimail is decoupled from legal personhood. A user generates a Identity_Keylocally. This key allows for the signing of messages and the reservation of a specialized @hachimail.com alias.
The code is law.
Join the network. Run a node. Be free.