Learn Tessera
A self-guided tour of the cryptography, privacy mechanisms, and network architecture behind Tessera — an open-source privacy protocol for authenticated, metadata-private, one-to-one delivery. Each article is written to be self-contained and citable.
What is Metadata Privacy?
Why metadata (who, when, how often) reveals your social graph — and how Tessera hides it.
CryptographySchnorr / Fiat–Shamir Zero-Knowledge Proofs Explained
The math behind Tessera’s non-interactive authentication: prove you know a key without revealing it.
PrivacyDifferential Privacy for Messaging Metadata
How (ε,δ)-differentially-private cover traffic hides per-bucket delivery counts from a global observer.
ProtocolPer-Recipient Blinded Pseudonyms
How per-delivery blinding Y′ = Y + t·G gives cross-recipient and cross-delivery unlinkability.
NetworkingBucketed Broadcast Routing
Tessera’s decentralized routing layer: commitments, buckets, Bloom fingerprints, and P2P gossip.
SecurityTessera Threat Model
Adversaries, security properties, assumptions, and what Tessera does — and does not — protect.