Core System Architecture Part 64 — Anonymous Network Testing, Verification, Simulation, Fault Injection, Adversarial Validation & Release Quality Architecture
SIAR — Secure, Local-First, Multi-Transport Communication Platform
Series: Core System Architecture
Part: 64
Status: Architecture specification
Primary language: Rust
Builds on: Core System Architecture Parts 34–63
Primary purpose: define SIAR's complete verification and release-quality architecture, including unit, property, fuzz, model, formal, integration, end-to-end, chaos, adversarial, privacy, compatibility, performance, reproducibility, and release-gating systems across the anonymous network.
1. Purpose
An anonymous network can appear functional while violating critical guarantees.
Examples:
privacy fallback under failure
replay acceptance under race
cross-domain identity leakage
secret logging in one error path
stale key resurrection after restore
unbounded queue under malformed load
policy rollback during partial upgrade
Traditional happy-path testing is insufficient.
The governing principle is:
Every important security, privacy, reliability, and protocol claim should have executable evidence, and release should be blocked when that evidence is missing or failing.
2. Verification Pyramid
Formal / Model Verification
▲
Adversarial / Privacy Validation
▲
Chaos / Fault Injection
▲
End-to-End / Multi-Node
▲
Integration
▲
Property / Fuzz
▲
Unit
3. Core Separation
Keep distinct:
correctness test
security test
privacy test
performance test
compatibility test
reliability test
operational test
release qualification
4. Non-Goals
Part 64 does not allow:
release based only on unit tests
production as the primary test environment
manual-only privacy review
fuzzing without corpus retention
formal models disconnected from implementation
5. Verification Classes
#![allow(unused)] fn main() { pub enum VerificationClass { Unit, Property, Fuzz, Model, Formal, Integration, EndToEnd, Chaos, Adversarial, Privacy, Performance, Compatibility, Reproducibility, } }
6. Test Confidence Levels
#![allow(unused)] fn main() { pub enum VerificationConfidence { Basic, Standard, High, Critical, } }
7. Critical Components
Examples:
identity
ratchet/session security
replay protection
governance quorum
policy merge
recovery
trust roots
federation routing
8. Critical Components Require Multiple Verification Modes
Hard rule.
9. Example
Replay protection should have:
unit
property
fuzz
concurrency
fault injection
not just one test.
10. Test Manifest
#![allow(unused)] fn main() { pub struct VerificationManifest { pub artifact: BuildHash, pub commit: GitCommitHash, pub suites: Vec<VerificationSuiteResult>, pub environment: VerificationEnvironment, } }
11. Artifact Binding
Every release-quality test result must identify exact artifact.
12. No "Tests Passed On Similar Build"
Hard rule.
13. Verification Environment
#![allow(unused)] fn main() { pub struct VerificationEnvironment { pub toolchain: ToolchainVersion, pub host_profile: TestHostProfile, pub config_profile: TestConfigProfile, } }
14. Reproducibility
Store enough metadata to rerun.
15. Determinism
Where possible, tests use fixed:
seed
clock
network schedule
failure sequence
16. Test Seed
#![allow(unused)] fn main() { pub struct TestSeed(pub u64); }
17. Failure Reproduction
Every randomized failure should print/store seed.
18. Unit Tests
Scope:
pure functions
validation
state transitions
serialization
policy checks
19. Unit Test Requirement
Fast.
20. Unit Tests Run
Every commit.
21. Property Testing
Use:
proptest
quickcheck-compatible patterns
22. Property Examples
deserialize(serialize(x)) == x
monotonic epoch never decreases
duplicate message never applied twice
revoked authority never contributes quorum
23. Domain Invariants
Encode as properties.
24. Property Test Corpus
Persist minimal failing cases.
25. Shrinking
Required where supported.
26. Fuzzing
Use:
cargo-fuzz
libFuzzer
27. Fuzz Targets
Priority:
wire parsers
Postcard envelopes
policy bundles
recovery packages
federation envelopes
config parser
naming records
time/replay records
28. Fuzzing Boundaries
Every untrusted input parser should have a target.
29. No Parser Without Bounds
Hard rule.
30. Fuzz Corpus
Version controlled or artifact stored.
31. Regression Corpus
Every discovered bug becomes permanent regression case.
32. Differential Fuzzing
Useful across:
protocol versions
old/new parser
reference implementation
33. Mutation Testing
Optional but valuable.
34. Goal
Detect weak tests.
35. State-Machine Testing
Critical for:
recovery
governance
mailbox
upgrade
federation
settlement
36. Model State
#![allow(unused)] fn main() { pub trait StateMachineModel { type State; type Command; fn apply( &self, state: &mut Self::State, command: Self::Command, ) -> ModelResult; } }
37. Implementation Adapter
Run same generated command sequence against real implementation.
38. Compare
model result
vs
implementation result
39. Model-Based Testing
Especially valuable for crash/retry semantics.
40. Crash Injection
Inject after each durable step.
41. Restart
Verify recovery.
42. Crash Point ID
#![allow(unused)] fn main() { pub struct CrashPointId(pub &'static str); }
43. Instrumented Crash Points
Development/test only.
44. No Test Hook In Production Behavior
Hard rule.
45. Integration Tests
Combine:
database
transport
storage
crypto
policy
46. Integration Environment
Ephemeral.
47. Containers/VMs
Useful.
48. No Shared Long-Lived Integration Environment Required
Hard rule.
49. End-to-End Tests
Synthetic user workflow.
50. Examples
pair devices
send message
offline recipient
resume
rotate mailbox
revoke device
51. E2E Test Identity
Synthetic only.
52. No Real User Accounts
Hard rule.
53. Multi-Node Testbed
Need reusable harness.
54. Testbed Topology
#![allow(unused)] fn main() { pub struct TestTopology { pub clients: usize, pub mix_nodes: usize, pub mailboxes: usize, pub relays: usize, pub federation_domains: usize, } }
55. Deterministic Network Simulation
Core capability.
56. Simulated Network
Controls:
latency
loss
duplication
reordering
partition
bandwidth
57. Network Event
#![allow(unused)] fn main() { pub enum NetworkFault { Drop, Duplicate, Delay(Duration), Reorder, Partition, BandwidthLimit(u64), } }
58. Test Transport Adapter
Swap real transport for deterministic simulated transport.
59. Same Protocol Logic
Hard rule.
60. Simulation Clock
Virtual.
61. Why
Allows:
hours/days of protocol time
in seconds.
62. Virtual Clock Trait
#![allow(unused)] fn main() { pub trait VirtualClock { fn now(&self) -> SimulatedTime; fn advance(&mut self, by: Duration); } }
63. Deterministic Scheduler
Useful for concurrency tests.
64. Concurrency Verification
Use:
loom
for selected primitives.
65. Loom Targets
Examples:
replay cache
config reload
recovery authorization
bounded queue
66. Data Race
Rust prevents many memory races.
Not logical races.
67. Fault Injection
Need systematic failure classes.
68. Fault Classes
#![allow(unused)] fn main() { pub enum FaultClass { Network, Process, Storage, Clock, Dependency, Resource, Security, } }
69. Process Faults
crash
kill
pause
restart
70. Storage Faults
write failure
fsync failure
disk full
corruption
slow IO
71. Clock Faults
rollback
jump forward
skew
source unavailable
72. Dependency Faults
DB unavailable
secret store unavailable
directory unavailable
73. Resource Faults
CPU saturation
memory pressure
FD exhaustion
network saturation
74. Security Faults
revoked key
malformed signature
stale policy
compromised peer
75. Fault Schedule
#![allow(unused)] fn main() { pub struct FaultSchedule { pub events: Vec<ScheduledFault>, } }
76. Chaos Engineering
Staging/pre-prod.
77. Chaos Principles
bounded blast radius
known hypothesis
automatic stop
reproducible scenario
78. No Unbounded Random Production Chaos
Hard rule.
79. Production Chaos
Only safe infrastructure failure drills.
80. Privacy Chaos
Never inject real user deanonymization risk.
81. Disaster Drills
Part 50.
82. Scenarios
region loss
authority loss
mailbox failover
directory quorum loss
83. Adversarial Validation
Think like attacker.
84. Adversary Classes
malicious client
malicious provider
malicious peer domain
compromised operator
passive network observer
active network attacker
85. Attack Harness
#![allow(unused)] fn main() { pub trait AdversarialScenario { fn prepare(&self, harness: &mut AdversarialHarness); fn execute(&self) -> AdversarialResult; } }
86. Malformed Input
Basic.
87. Protocol Abuse
Examples:
replay storm
fragment flood
reservation spam
fake capacity
equivocation
88. Privacy Adversarial Tests
Examples:
timing correlation
volume fingerprint
handle enumeration
federation linkage
clock fingerprint
89. Privacy Testbed
Generate synthetic population.
90. Privacy Trace
Test-only.
91. Observable Event
#![allow(unused)] fn main() { pub struct ObservableEvent { pub observer: ObserverClass, pub timestamp_bucket: u64, pub metadata: ObservableMetadata, } }
92. Never Enable Full Privacy Trace In Production
Hard rule.
93. Adversary Metrics
Potential:
classifier accuracy
mutual information
correlation
entropy
advantage
94. Privacy Threshold
Defined by test profile.
95. Privacy Regression
Release blocker.
96. Correlation Lab
Need repeatable synthetic experiment.
97. Traffic Analysis Profiles
light observer
ISP observer
two-provider collusion
global passive approximation
98. No Absolute Anonymity Claim
Hard rule.
99. Security Testing
Includes:
static analysis
dependency scan
secret scan
binary hardening checks
100. Static Analysis
Use:
clippy
rustc lints
101. Clippy
Warnings as errors for selected lint profile.
102. Unsafe Code
Track explicitly.
103. Unsafe Policy
deny by default
reviewed exceptions
104. Unsafe Inventory
Machine-readable.
105. Miri
Useful for selected unsafe/UB-sensitive code.
106. Sanitizers
Where supported:
ASan
TSan
UBSan
107. Rust Limitations
Sanitizers still useful around FFI/native libraries.
108. Dependency Security
Use:
cargo audit
cargo deny
109. Secret Scanning
CI.
110. Binary Scanning
Check:
debug symbols policy
unexpected strings
embedded secret
111. Supply-Chain Tests
Part 62.
112. Reproducibility Verification
Independent rebuild where possible.
113. Artifact Hash Match
Critical release signal.
114. Golden Vectors
Protocol serialization/crypto compatibility.
115. Golden Vector
#![allow(unused)] fn main() { pub struct GoldenVector { pub protocol: ProtocolDomain, pub version: ProtocolVersion, pub input_digest: [u8; 32], pub output_bytes: Vec<u8>, } }
116. Golden Vector Stability
Intentional changes only.
117. Wire Compatibility
Old/new implementations tested.
118. Compatibility Matrix
#![allow(unused)] fn main() { pub struct CompatibilityMatrix { pub entries: Vec<CompatibilityCase>, } }
119. Matrix Dimensions
current ↔ current
current ↔ previous
previous ↔ current
120. Federation Matrix
Across domains.
121. Upgrade Matrix
Part 52.
122. Migration Tests
Test every supported schema migration.
123. Crash During Migration
Mandatory.
124. Rollback Migration
Only when declared reversible.
125. Backup/Restore Tests
Part 33/50/57.
126. Recovery Tests
Restore:
durable state
fresh device
fresh credentials
127. Never Accept Test That Restores Stale Session Secret
Hard rule.
128. Persistence Verification
Use checksums/invariants.
129. Database Corruption
Inject.
130. Partial Write
Inject.
131. Power-Loss Simulation
Where practical.
132. Filesystem Semantics
Test target systems.
133. Property: Persist-Before-Send
Critical.
134. Test
Crash between:
persist
send
ack
135. Delivery Correctness
No lost/duplicate semantic message.
136. Dedup Test
Repeated network copy -> one application delivery.
137. Outbox Test
Restart resumes correctly.
138. Mailbox ACK Test
No ACK before durable persist.
139. Group Tests
Membership/rekey races.
140. Calls
Signaling/media session races.
141. Notification Tests
Push wake duplication/loss.
142. Search Tests
Index rebuild correctness.
143. Backup Tests
Selective restore.
144. Governance Tests
Quorum/partition/equivocation.
145. Economics Tests
Double-spend/settlement/idempotency.
146. Federation Tests
Trust edge/revocation/path loop.
147. Naming Tests
Enumeration/confusable/recycled handle.
148. Time Tests
Clock skew/replay/epoch.
149. Config Tests
Admin/RBAC/secret rotation.
150. Deployment Tests
Artifact/config/host drift.
151. Performance Tests
Part 63.
152. Security Invariant Registry
Central machine-readable registry.
153. Invariant Definition
#![allow(unused)] fn main() { pub struct SecurityInvariant { pub id: InvariantId, pub description: &'static str, pub verification: Vec<VerificationRequirement>, } }
154. Verification Requirement
#![allow(unused)] fn main() { pub enum VerificationRequirement { Unit, Property, Fuzz, Model, Formal, Integration, Adversarial, } }
155. Privacy Invariant Registry
Separate but linked.
156. Example
"No silent direct fallback"
requires:
integration
fault injection
privacy regression
157. Traceability
Each architectural invariant maps to tests.
158. Requirement ID
Recommended across architecture docs.
159. Test Evidence Store
Store:
manifest
logs
reports
coverage
seeds
artifacts
160. Evidence Retention
Long enough for release audit.
161. No User Data
Hard rule.
162. Test Coverage
Useful but not sufficient.
163. Line Coverage
Track.
164. Branch Coverage
More meaningful.
165. Protocol State Coverage
Important.
166. Coverage Threshold
Component-specific.
167. 100% Coverage
Not proof.
168. Mutation Score
Can complement coverage.
169. Formal Verification
Use selectively.
170. TLA+
Best for:
distributed state machines
quorum
failover
upgrade
recovery
171. Kani
Best for:
bounded Rust state/logic
arithmetic
policy invariants
172. Creusot/Prusti
Potential for proof-oriented Rust.
173. Alloy
Useful for relational models.
174. Formal Model Ownership
Model should live near implementation.
175. Model Drift
Danger.
176. CI Check
Model version tied to code/release.
177. Proof Obligation
Critical changes require model review.
178. No Formal-Washing
Hard rule.
179. Formal Result Scope
Document exactly what was proven.
180. Adversarial Red Team
Periodic.
181. Scope
protocol
infrastructure
operator console
privacy
supply chain
182. Red Team Data
Synthetic/test environment.
183. External Audit
Recommended before major public deployment.
184. Audit Findings
Tracked as:
critical
high
medium
low
185. Release Block
Critical/high unresolved security/privacy findings.
186. Penetration Testing
Control plane/provider infra.
187. Do Not Pentest User Devices Without Consent
Hard rule.
188. Abuse Simulation
Spam/flood/harassment-report flow.
189. Moderation Abuse
Fake reports/quorum misuse.
190. Operator Abuse
Admin role escalation.
191. Governance Abuse
Emergency policy misuse.
192. Economic Abuse
Subsidy/payment manipulation.
193. Legal Boundary Abuse
Overbroad disclosure export.
194. Privacy Consent Abuse
Dark-pattern/regression tests.
195. Test Environments
#![allow(unused)] fn main() { pub enum VerificationEnvironmentClass { Local, CI, Nightly, Staging, PreRelease, ProductionSafe, } }
196. Local
Fast iteration.
197. CI
Fast deterministic gate.
198. Nightly
Long fuzz/property/integration.
199. Staging
Chaos/soak/performance.
200. PreRelease
Full qualification.
201. ProductionSafe
Only synthetic probes/drills.
202. No Destructive Privacy Experiment In Production
Hard rule.
203. Test Data Generator
Need reusable generator.
204. Data Types
messages
attachments
groups
contacts
mailboxes
credits
providers
federation domains
205. Synthetic Identity
Random disposable.
206. No Production Secret Reuse
Hard rule.
207. Deterministic Fixture
Generated from seed.
208. Snapshot Testing
Useful for:
policy rendering
protocol diagnostics
UI DTOs
209. Snapshot Caution
Do not snapshot secrets.
210. Serialization Snapshot
Golden vectors better for wire.
211. Protocol Version Tests
Every supported version.
212. Unknown Future Version
Reject safely.
213. Too-Old Version
Reject according policy.
214. Fuzz Version Envelope
Mandatory.
215. Migration Compatibility
Current binary reads prior supported DB schema.
216. Reverse Compatibility
Only if explicitly supported.
217. Rolling Upgrade Test
Mixed-version cluster.
218. Control-Plane Mixed Version
Part 52.
219. Provider Mixed Version
Test.
220. Federation Mixed Version
Test.
221. Clock Skew Mixed Version
Test.
222. Chaos Scenario Library
Versioned.
223. Example Scenario
mailbox region fails
directory stale
network loss 5%
clock skew +90s
one provider revoked
224. Scenario Manifest
#![allow(unused)] fn main() { pub struct ChaosScenario { pub id: ScenarioId, pub topology: TestTopology, pub faults: FaultSchedule, pub assertions: Vec<ScenarioAssertion>, } }
225. Assertions
Machine-readable.
226. Example
no direct fallback
no lost durable message
privacy mode unchanged
227. Test Oracle
Must be explicit.
228. No "Didn't Crash" As Only Success
Hard rule.
229. Privacy Oracle
Examples:
forbidden identifier absent
timing classifier below threshold
no exact timestamp field
230. Security Oracle
Examples:
replay rejected
signature required
stale key denied
231. Reliability Oracle
Examples:
eventually delivered
recovered after restart
bounded retry
232. Performance Oracle
Examples:
p99 within budget
queue bounded
233. Observability Oracle
No secret/user ID in logs.
234. Log Leak Test
Inject synthetic canary secrets.
235. Canary Secret
#![allow(unused)] fn main() { pub struct TestCanarySecret(pub String); }
236. Scan
Logs/support bundles/telemetry.
237. Release Block
Any canary leak.
238. Secret Exposure Tests
Also scan:
core dumps
crash reports
config output
239. Privacy Identifier Canary
Inject synthetic:
AccountId
DeviceId
MailboxId
240. Ensure remote telemetry rejects them.
241. Support Bundle Tests
Mandatory.
242. Backup Content Tests
No forbidden ephemeral secrets.
243. Recovery Package Tests
No stale session state.
244. SBOM Test
Part 62.
245. Reproducible Build Test
Independent builders.
246. Artifact Promotion Test
Release candidate hash == production hash.
247. Signing Test
Manifest chain verifies.
248. Trust Root Test
Root rollover.
249. Emergency Policy Test
Expiry enforced.
250. Release Quality Gates
Need explicit gates.
251. Gate Classes
#![allow(unused)] fn main() { pub enum ReleaseGate { Correctness, Security, Privacy, Compatibility, Reliability, Performance, SupplyChain, Operations, } }
252. Gate Decision
#![allow(unused)] fn main() { pub enum GateDecision { Pass, Conditional, Fail, } }
253. Security Gate
No conditional for critical issue.
254. Privacy Gate
No conditional for invariant violation.
255. Compatibility Gate
Can be conditional only if unsupported version intentionally removed.
256. Release Qualification Record
#![allow(unused)] fn main() { pub struct ReleaseQualification { pub artifact: BuildHash, pub gates: BTreeMap<ReleaseGate, GateDecision>, pub evidence_digest: [u8; 32], } }
257. Production Release
Requires all mandatory gates pass.
258. No Manual "Force Release" For Critical Gate
Hard rule.
259. Emergency Release
Still needs:
security
privacy
artifact integrity
basic compatibility
260. Emergency Scope
Can reduce breadth of test suite.
Not core invariants.
261. Release Candidate Process
build
→ verify
→ fuzz
→ integration
→ chaos
→ performance
→ compatibility
→ sign
→ promote
262. Build Once
Part 62.
263. Exact Artifact
Same artifact tested/promoted.
264. Test Evidence Hash
Can be linked in release manifest.
265. Release Manifest Extension
#![allow(unused)] fn main() { pub struct ReleaseVerificationRef { pub qualification_digest: [u8; 32], } }
266. Continuous Verification
Not only release day.
267. CI Tiers
PR fast
merge standard
nightly deep
weekly exhaustive
release full
268. PR Fast
unit
clippy
format
selected property
269. Merge Standard
integration
protocol vectors
migration smoke
270. Nightly Deep
fuzz
long property
multi-node
271. Weekly Exhaustive
soak
chaos
large scale
272. Release Full
Everything required by qualification profile.
273. Verification Profile
#![allow(unused)] fn main() { pub enum VerificationProfile { Developer, Continuous, ReleaseCandidate, ProductionRelease, } }
274. Profile Defines Required Suites
Machine-readable.
275. Test Flakiness
Must be tracked.
276. Flaky Test
Not silently ignored.
277. Quarantine Policy
Temporary with owner/deadline.
278. No Permanent #[ignore]
Hard rule for required tests.
279. Failure Triage
Classify:
product bug
test bug
environment issue
nondeterminism
280. Nondeterminism
Treat seriously in distributed security code.
281. Repro Tool
Given seed/scenario, rerun.
282. Scenario Replay CLI
Recommended.
283. Example
siar-test replay --scenario <id> --seed <seed>
284. Test Artifact Retention
Store:
scenario
seed
failure logs
minimal reproducer
artifact hash
285. Privacy-Safe Test Logs
Synthetic only.
286. No Production User Data In CI
Hard rule.
287. Test Secrets
Dedicated.
288. Never Use Production Keys In Test
Hard rule.
289. Test PKI
Separate root.
290. Test Governance
Separate authority set.
291. Test Federation Domains
Synthetic.
292. Threat Coverage Matrix
Map threat → tests.
293. Example
replay attack
→ fuzz
→ property
→ adversarial
→ integration
294. Privacy Coverage Matrix
Map privacy guarantee → experiment.
295. Example
no cross-service identity
→ schema scan
→ telemetry test
→ federation test
296. Requirement Traceability
Architecture requirement IDs.
297. Release Report
Generated.
298. Report Sections
artifact
test suites
security findings
privacy findings
compatibility
performance
known risks
299. No Hidden Waiver
Any waiver explicit.
300. Waiver Scope
#![allow(unused)] fn main() { pub struct TestWaiver { pub suite: VerificationClass, pub reason: String, pub expires_at: Timestamp, pub approvers: Vec<ApprovalRef>, } }
301. Waiver Cannot Cover
critical security invariant
critical privacy invariant
artifact integrity
302. Hard rule.
303. Test Infrastructure Security
CI itself is attack surface.
304. Release CI Isolation
Ephemeral runners.
305. Least Privilege
Test runner should not access production secrets.
306. Artifact Signing
Separate step.
307. Untrusted PR Code
Must not access signing credentials.
308. Hard rule.
309. Fuzz Infrastructure
Sandboxed.
310. Artifact Upload
Integrity checked.
311. External Contributor Tests
No secret access.
312. Reproducibility Worker
Independent trust domain useful.
313. Verification Storage
Append-only release evidence preferred.
314. Evidence Tamper Detection
Hash/sign.
315. Release Audit
Can verify historic evidence.
316. Operations Drill
Tests runbook quality.
317. Runbook Test
Periodic.
318. Examples
rotate authority
restore mailbox
fail region
revoke provider
319. Human-in-the-Loop Testing
Necessary for:
break-glass
legal disclosure
governance ceremony
320. Record Outcome
Infrastructure/governance only.
321. No User Traffic Used.
322. Quality SLOs
Examples:
zero critical known regression
fuzz hours/week
chaos scenarios passing
compatibility matrix coverage
323. Security Quality SLO
Critical invariants always gated.
324. Privacy Quality SLO
Privacy regressions zero tolerance.
325. Test Debt
Track.
326. Missing Test For Critical Bug
Release blocker until regression test exists.
327. Bug Lifecycle
discover
→ reproduce
→ fix
→ regression test
→ close
328. Incident Learning
Production incident becomes:
test
chaos scenario
monitoring check
where possible.
329. Verification Service Trait
#![allow(unused)] fn main() { pub trait VerificationService { fn run( &self, profile: VerificationProfile, artifact: BuildHash, ) -> Result<VerificationManifest, VerificationError>; } }
330. Release Gate Evaluator
#![allow(unused)] fn main() { pub trait ReleaseGateEvaluator { fn evaluate( &self, manifest: &VerificationManifest, policy: &ReleaseQualityPolicy, ) -> ReleaseQualification; } }
331. Scenario Runner
#![allow(unused)] fn main() { pub trait ScenarioRunner { fn execute( &self, scenario: ChaosScenario, seed: TestSeed, ) -> Result<ScenarioReport, VerificationError>; } }
332. Privacy Experiment Runner
#![allow(unused)] fn main() { pub trait PrivacyExperimentRunner { fn run( &self, experiment: PrivacyExperiment, ) -> Result<PrivacyExperimentReport, VerificationError>; } }
333. Model Checker Adapter
#![allow(unused)] fn main() { pub trait ModelCheckAdapter { fn verify( &self, model: FormalModelRef, ) -> Result<ModelCheckReport, VerificationError>; } }
334. Release Quality Policy
#![allow(unused)] fn main() { pub struct ReleaseQualityPolicy { pub required_gates: BTreeSet<ReleaseGate>, pub required_profiles: BTreeSet<VerificationProfile>, pub max_open_high_security_findings: u32, pub max_open_privacy_findings: u32, } }
335. Production Policy
max_open_high_security_findings = 0
max_open_privacy_findings = 0
336. Test Evidence Schema
Versioned.
337. Verification Schema Version
#![allow(unused)] fn main() { pub struct VerificationSchemaVersion(pub u32); }
338. Anti-Rollback
Release evidence cannot be silently replaced with weaker older profile.
339. Evidence Chain
Optional append-only signed history.
340. Security & Quality Invariants
Mandatory:
1. Every production release is tied to exact artifact-specific verification evidence.
2. Critical security/privacy invariants require more than one verification technique.
3. Every untrusted parser has fuzz coverage and explicit bounds.
4. Distributed state machines have model/property/fault tests for crash/retry behavior.
5. No production user data, identity, message, key, or secret is used as test fixture.
6. Release tests use the same exact artifact promoted to production.
7. Privacy regressions are release-blocking.
8. Critical security findings are release-blocking.
9. Chaos/fault tests assert privacy and correctness, not merely process survival.
10. Test hooks cannot silently alter production protocol behavior.
11. Production signing credentials are isolated from untrusted CI/PR code.
12. Every critical bug gains a permanent regression test before closure.
341. Recommended Crate Layout
crates/
├── siar-verification-core/
├── siar-test-fixtures/
├── siar-property-testkit/
├── siar-fuzz-targets/
├── siar-model-testkit/
├── siar-simulation/
├── siar-fault-injection/
├── siar-chaos/
├── siar-adversarial-testkit/
├── siar-privacy-lab/
├── siar-release-gates/
└── siar-verification-report/
342. siar-verification-core
Owns:
verification classes
profiles
manifests
errors
343. siar-test-fixtures
Synthetic identities/state.
344. siar-property-testkit
Reusable proptest strategies.
345. siar-fuzz-targets
Central parser/protocol fuzz registry.
346. siar-model-testkit
State-machine model adapters.
347. siar-simulation
Deterministic network/clock/topology simulator.
348. siar-fault-injection
Process/storage/network/resource faults.
349. siar-chaos
Scenario orchestration.
350. siar-adversarial-testkit
Attack simulation.
351. siar-privacy-lab
Traffic-analysis/correlation experiments.
352. siar-release-gates
Release qualification policy.
353. siar-verification-report
Evidence/report generation.
354. Error Taxonomy
#![allow(unused)] fn main() { pub enum VerificationError { SuiteFailed, EnvironmentInvalid, ArtifactMismatch, ScenarioInvalid, ReproductionFailed, PrivacyRegression, SecurityRegression, CompatibilityFailure, PerformanceRegression, EvidenceIncomplete, Internal, } }
355. Initial Production Scope
Implement first:
unit/property suites
cargo-fuzz targets for all wire/config/recovery parsers
deterministic multi-node simulation
virtual clock
network fault injection
crash-point testing
state-machine model tests
golden wire vectors
current↔previous compatibility matrix
privacy canary/log leak tests
release gate policy
artifact-specific verification manifest
nightly deep verification
pre-release chaos + performance qualification
Then add:
formal TLA+/Kani verification in CI
advanced correlation lab
mutation testing
independent rebuild verification
automated threat/requirement coverage matrices
external audit evidence import
356. Definition of Done
Part 64 is complete when:
- verification classes and confidence levels are explicit
- exact artifact hash is attached to release evidence
- unit/property/fuzz/model/integration/E2E/chaos/adversarial/privacy suites exist
- every untrusted parser has fuzz targets
- deterministic network and clock simulation exists
- crash/restart injection covers durable state machines
- protocol golden vectors and compatibility matrices are versioned
- privacy experiments measure timing/linkability regressions
- security/privacy canary tests catch logging/telemetry leaks
- release gates are machine-readable and non-bypassable for critical failures
- CI trust boundaries isolate signing credentials
- failures retain seeds/minimal reproducers
- incident findings become permanent regression scenarios
- release reports include known risks and evidence digests
- formal verification targets are connected to implementation state machines
357. Final Architecture
SOURCE / ARTIFACT
│
▼
UNIT / PROPERTY / FUZZ
│
▼
MODEL / FORMAL VERIFICATION
│
▼
INTEGRATION / MULTI-NODE E2E
│
▼
FAULT / CHAOS / ADVERSARIAL
│
▼
PRIVACY / PERFORMANCE LAB
│
▼
RELEASE QUALITY GATES
│
▼
PRODUCTION PROMOTION
Verification safety model:
multiple independent techniques
+
deterministic simulation
+
fault injection
+
privacy/adversarial testing
+
artifact-specific evidence
+
hard release gates
not:
unit tests passed, therefore anonymous network is production-ready
358. Final Principle
A privacy-preserving distributed system must prove more than functional correctness.
The correct verification model is:
correctness
+
security
+
privacy
+
fault tolerance
+
compatibility
+
performance
+
supply-chain integrity
with executable evidence bound to the exact artifact that is released.
This architecture gives SIAR a release-quality system capable of detecting protocol, privacy, reliability, operational, and adversarial regressions before they reach production, completing the verification foundation built across Parts 34–63.