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Phase 1 Sprint 1.2 - Payload Security Layer

Objective

Enforce payload authenticity, replay resistance, and operator burst protections in the telemetry gateway.

Deliverables

• Ed25519 verification for telemetry request signatures.
• Strict header requirements for signed telemetry.
• Redis nonce store for replay prevention.
• ±30s timestamp skew enforcement.
• Per-operator rate limiting and burst anomaly rejection.
• Security tests covering forged/expired/replayed/burst scenarios.

Exit Criteria

• Forged payloads are rejected.
• Expired timestamps are rejected.
• Reused nonces are rejected.
• Burst requests exceed threshold and return 429.

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Docs | VectorVue | Nexus | Nyxera Labs