# Development Requirements

This document defines development implementation requirements.

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### REQ-d00001: Authentication Module

**Level**: DEV | **Implements**: p00001, o00001 | **Status**: Active

The authentication module SHALL implement secure user verification using industry-standard protocols.

**Rationale**: Security best practices require proven authentication mechanisms.

**Acceptance Criteria**:
- OAuth 2.0 / OIDC support
- Password hashing with bcrypt
- JWT token management
- Refresh token rotation

*End* *Authentication Module* | **Hash**: 343879f1
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### REQ-d00002: Privacy Controls

**Level**: DEV | **Implements**: p00002, o00002 | **Status**: Active

The privacy module SHALL implement data protection controls as specified in product requirements.

**Rationale**: Implementation of data privacy features.

**Acceptance Criteria**:
- AES-256 encryption for PII
- Data masking in logs
- GDPR export endpoint
- Data deletion workflow

*End* *Privacy Controls* | **Hash**: 48edab8c
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### REQ-d00003: Audit Trail Implementation

**Level**: DEV | **Implements**: p00003 | **Status**: Active

The audit module SHALL implement comprehensive event logging with tamper-evident storage.

**Rationale**: FDA compliance requires verifiable audit trails.

**Acceptance Criteria**:
- Event sourcing architecture
- Cryptographic hash chains
- Immutable log storage
- Query API for auditors

*End* *Audit Trail Implementation* | **Hash**: 3329f7a0
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