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# System prepended metadata

title: Post-Quantum Signature Chaos Engineering Testing Plan

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# Post-Quantum Signature Chaos Engineering Testing Plan.

## 1. Chaos Injection Scenarios 



| **Chaos Type**       | **Description**             | **Test Case (Implied)**                                           |
|----------------------|-----------------------------|-------------------------------------------------------------------|
| Network Partition    | 30/70 node split            | Test fork choice recovery and partition healing                  |
| Clock Skew           | Shift clocks ±1–2s          | Test slot boundary and signature timing issues                   |
| Signature Spam       | Inject 10k fake sigs/slot   | Test aggregation DoS and validator resilience                    |
| Validator Failures   | Random validator shutdowns  | Test finality under partial failure                              |
| Peer Flapping        | Rapid peer connect/disconnect | Test gossip resilience and redundancy                          |
| Latency Injection    | 500ms–2s delay on QUIC packets | Test validator slot timing thresholds                        |

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## 2. Structural Fault Simulation Test Cases

Fault injection scenarios to test protocol resilience.

| **Fault**               | **Description**                             | **Test Case (Implied)**                                             |
|-------------------------|---------------------------------------------|----------------------------------------------------------------------|
| Attestation Delay       | One client delays attestations by 2s        | Test impact on finality and fork choice                             |
| Bad BLS Params          | One client uses incorrect BLS parameters    | Test detection and isolation of cryptographic failure               |
| Premature Aggregate     | One client aggregates too early             | Test attestation agreement and client divergence                    |

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## 3. Synthetic Load Tactics Test Cases



| **Tactic / Persona**  | **Description**                                 | **Test Case (Implied)**                                            |
|------------------------|-------------------------------------------------|---------------------------------------------------------------------|
| Ghost messages         | Valid-looking but invalid messages             | Test message validation and resource exhaustion                    |
| Signature flooding     | Inject high signature volume                   | Test memory/CPU limits, spam mitigation                            |
| Historical replay      | Replay traffic time-compressed                 | Test validator behavior under real-time pressure                   |
| Lazy persona           | Delays in processing                           | Test sync/finality robustness                                      |
| Bursty persona         | Periodic drop and reconnect                    | Test gossip and fork stability                                     |
| Remote persona         | Inject latency to simulate geographic distance | Test signature timing and gossip delay handling                    |

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## 4. Adversarial Failure Modes Test Cases



| **Scenario**               | **Description**                                  | **Test Case (Implied)**                                          |
|----------------------------|--------------------------------------------------|-------------------------------------------------------------------|
| Signature Bottleneck       | Increase signature complexity                    | Test validator throughput, missed attestations                   |
| Partition + Sig Load       | Partition then spam both halves                  | Test view divergence and recovery                                |
| Memory Exhaustion          | Extend sig lifetimes to grow memory              | Test memory leak, GC, and crash protection                       |
| Eclipse + PQ Overhead      | Isolate validators with old-but-valid sigs       | Test view divergence and CPU cost of mitigation                  |
| Signature Grinding DoS     | Expensive crafted signatures                     | Test mitigation like rate limiting and rejection heuristics      |
