Contact Locker — AES-256-GCM Encrypted Directory

What it is

AES-256-GCM encryption with PBKDF2 key derivation from a Room Code passphrase. AES-256-GCM Encrypted Directory is a core component of the P31 Labs sovereign cognitive infrastructure stack — built to run offline, deployed to the edge, and designed without dark patterns.

PBKDF2 with 200,000 iterations and a random 16-byte salt derives the AES-256-GCM key. All crypto operations via WebCrypto SubtleCrypto — no third-party crypto library. Short p31ca.org URL 302 → workers.dev (probe: worker-spa-contact-locker).

Core features

AES-256-GCM encryption with PBKDF2 key derivation from a Room Code passphrase

Quick dial panel: one-tap call for emergency contacts without unlocking the full vault

Contact categories: legal, medical, family, support network

Export encrypted bundle — safe to back up to iCloud or Google Drive

No cloud sync, no account — Room Code is the only credential

How to use

1Set a Room Code on first open — this derives your AES-256-GCM key

2Add contacts: name, phone, category, notes — all encrypted immediately

3Emergency panel: tap ☎ to quick-dial without full decrypt

Architecture

P31 Labs, Inc. (Georgia nonprofit, EIN 42-1888158) builds open tools for cognitive sovereignty, communication clarity, and family coordination. This page is technical documentation, not medical or legal advice. Mission and support: phosphorus31.org.

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