# 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.

## Assertions

A. The module SHALL support OAuth 2.0 and OIDC.
B. The module SHALL hash passwords with bcrypt.
C. The module SHALL manage JWT tokens with expiry.
D. The module SHALL implement refresh token rotation.

## Rationale

Security best practices require proven authentication mechanisms.

*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.

## Assertions

A. The module SHALL use AES-256 encryption for PII.
B. The module SHALL mask sensitive data in logs.
C. The module SHALL provide a GDPR export endpoint.
D. The module SHALL implement a data deletion workflow.

## Rationale

Implementation of data privacy features.

*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.

## Assertions

A. The module SHALL use event sourcing architecture.
B. The module SHALL use cryptographic hash chains.
C. The module SHALL store logs in immutable storage.
D. The module SHALL provide a query API for auditors.

## Rationale

FDA compliance requires verifiable audit trails.

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