Research: MongoDB schema design complete

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- Zero-knowledge encryption for ALL sensitive data + metadata
- Blood pressure example: value + type + unit ALL encrypted
- 9 collections: users, families, profiles, health_data, lab_results, medications, appointments, shares, refresh_tokens
- Client-side encryption (AES-256-GCM, PBKDF2)
- Server NEVER decrypts data
- Privacy-preserving queries (plaintext fields: userId, profileId, familyId, date, tags)
- Tagging system for encrypted data search
- Date range queries (plaintext dates)

Key principle:
- Both value AND metadata encrypted (e.g., "blood_pressure" + "120/80")
- No plaintext metadata leaks
- Server stores ONLY encrypted data

Updated tech stack decisions with MongoDB schema

All major research complete (Rust, Mobile, Web, State, Auth, Database)

Next: Backend development (Axum + MongoDB)

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goose 2026-02-14 13:39:57 -03:00

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