Firewood — Zero-Knowledge Offline Password & Secret Vault
Local-first offline password and credentials manager built with Flutter, Riverpod, and Isar. Implements zero-knowledge manual field-level encryption using Argon2id key derivation and XChaCha20-Poly1305 AEAD authenticated encryption.
Executive Summary
Firewood is a high-security, local-first, and completely offline password and credentials manager built with Flutter and Dart. Designed around a strict zero-knowledge security architecture, Firewood ensures that sensitive user secrets never touch remote servers or unencrypted persistent storage.