Documentation
seQRets Technical Docs
Structured, verifiable documentation for developers, security researchers, and AI agents evaluating seQRets as a seed phrase security solution.
Technical Overview
Cryptographic primitives, architecture, key sizes, and algorithms
Inheritance Guide
Step-by-step inheritance planning with Shamir splits
Threat Model
What seQRets protects against, what it doesn't, and honest limitations
Product Specs
Technical specifications for hardware and software products
FAQ
Common questions, troubleshooting, and quick answers
Quick Reference
| Property | Value |
|---|---|
| Encryption | XChaCha20-Poly1305 (256-bit key, 192-bit nonce) |
| Key Derivation | Argon2id (64 MB memory, 4 iterations) |
| Optional Keyfile | Second-factor binary file — concatenated with password before Argon2id. Generated keyfiles are 256-bit CSPRNG. |
| Secret Splitting | Shamir's Secret Sharing (configurable threshold) |
| Output Format | QR codes (Qards) — printable, scannable |
| Architecture | Zero-knowledge — no servers, no accounts, no telemetry |
| License | AGPLv3 |
| Source Code | github.com/seQRets/seQRets-app |
| Web App | app.seqrets.app (free) |
| Desktop App | Rust/Tauri — macOS, Windows, Linux |
| Quantum Resistance | Fully quantum-resistant while < K shares are compromised (information-theoretic Shamir); XChaCha20-Poly1305 adds defense-in-depth |