Publish Layerfault deep challenge LF-CH-LIN-0005

CHALLENGE_ORACLE.json

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+{
+  "attack_surface": [
+    "lineage-identity"
+  ],
+  "control_type": "comparison-derived",
+  "corpus_id": "LF-CH-LIN-0005",
+  "difficulty": "adversarial",
+  "expected_decision": "BLOCK",
+  "ground_truth": "synthetic-generated",
+  "layerfault_rule_expectations": {
+    "candidate_rules": [
+      "LF-TOKENIZER-SECURITY-DELTA"
+    ],
+    "expected_rules": [],
+    "must_not_rules": []
+  },
+  "oracle_ids": [
+    "LF-ORACLE-LIN-0005"
+  ],
+  "related_cases": [],
+  "repo_name": "lineage-tokenizer-drift",
+  "safe_fixture": true,
+  "schema": 2,
+  "severity": "critical",
+  "techniques": [
+    "tokenizer",
+    "drift"
+  ],
+  "transformations": []
+}

FIXTURE_LAYOUT.json

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+{
+  "artifacts": [
+    "base/model.safetensors",
+    "derived/model.safetensors",
+    "base/config.json",
+    "derived/config.json",
+    "lineage.json"
+  ],
+  "family": "lineage",
+  "note": "All content is synthetic and inert. Do not treat this as a production model.",
+  "repo_name": "lineage-tokenizer-drift"
+}

LAYERFAULT_CORPUS.json

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+{
+  "candidate_rules": [
+    "LF-TOKENIZER-SECURITY-DELTA"
+  ],
+  "challenge": {
+    "attack_surface": [
+      "lineage-identity"
+    ],
+    "control_type": "comparison-derived",
+    "difficulty": "adversarial",
+    "expected_decision": "BLOCK",
+    "oracle_ids": [
+      "LF-ORACLE-LIN-0005"
+    ],
+    "related_cases": [],
+    "severity": "critical",
+    "techniques": [
+      "tokenizer",
+      "drift"
+    ],
+    "transformations": []
+  },
+  "corpus_id": "LF-CH-LIN-0005",
+  "description": "Lineage tokenizer drift.",
+  "expected_rules": [],
+  "generator": "challenges.generate_challenge",
+  "ground_truth": "synthetic-generated",
+  "must_not_rules": [],
+  "repo_name": "lineage-tokenizer-drift",
+  "repo_type": "model",
+  "safe_fixture": true,
+  "safety": "inert/canary-only",
+  "schema": 1,
+  "validation": {
+    "kind": "verify-package",
+    "target": "."
+  }
+}

README.md

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+---
+license: apache-2.0
+tags:
+- layerfault
+- security-research
+- model-security
+- synthetic
+- adversarial-testing
+extra_gated_prompt: >-
+  This repository is a synthetic security-test artifact from the Layerfault
+  corpus. It intentionally contains adversarial characteristics (e.g.
+  suspicious pickle opcodes, executable-format smuggling, prompt-injection
+  strings) designed to exercise security scanner detection rules. It is
+  **not** a usable ML model and must never be loaded or executed outside an
+  isolated scanner-testing environment. By accepting, you confirm you
+  understand this repository is a test fixture, not production model
+  weights.
+extra_gated_button_content: I understand this is a security test fixture and accept the risk
+gated: auto
+---
+
+# lineage-tokenizer-drift
+
+> **SECURITY TEST ARTIFACT: DO NOT USE AS A PRODUCTION MODEL**
+
+This repository is part of the Layerfault synthetic security corpus.
+It is deliberately constructed to contain security-relevant characteristics for scanner testing.
+
+**Corpus ID:** `LF-CH-LIN-0005`
+
+## Purpose
+
+Lineage tokenizer drift.
+
+## Direct expected Layerfault rules
+
+- None; this repository is a control/comparison input.
+
+## Candidate rules
+
+These are deliberately plausible targets that remain marked as candidates until the exact
+Layerfault build used for certification confirms them.
+
+- `LF-TOKENIZER-SECURITY-DELTA`
+
+## Negative-control rules
+
+These should remain silent for this corpus item.
+
+- None
+
+## Safety
+
+The corpus uses fake secrets, loopback/`.invalid` network destinations, harmless marker output,
+and synthetic model behavior only. It is intended for static scanning and isolated security testing.
+
+## Challenge classification
+
+- Severity: **critical**
+- Difficulty: **adversarial**
+- Expected admission decision: **BLOCK**
+- Control type: **comparison-derived**
+- Attack surface: lineage-identity
+- Techniques: tokenizer, drift
+- Transformations: none
+
+### Ground-truth oracle IDs
+
+- `LF-ORACLE-LIN-0005`
+
+These oracle IDs describe synthetic ground truth. They do not claim that a
+matching Layerfault detector already exists. A challenge may intentionally expose
+a scanner blind spot and remain unmapped until the detector is implemented.

SHA256SUMS.json

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+[
+  {
+    "path": "CHALLENGE_ORACLE.json",
+    "sha256": "75e0711d257780519b592420a30e519a1593f26dff1f99af6b2b62593da00aed",
+    "size": 645
+  },
+  {
+    "path": "FIXTURE_LAYOUT.json",
+    "sha256": "769c1f379568328b341158b402dc9bafa54158af3124d647d8bd6726b75c4fd5",
+    "size": 313
+  },
+  {
+    "path": "LAYERFAULT_CORPUS.json",
+    "sha256": "d70507b6ea399c6f3b5f0ea4dc8e0d3c14a09fda1289cd497f4f39bc058e1842",
+    "size": 869
+  },
+  {
+    "path": "README.md",
+    "sha256": "6069a8ed91af591770fd83ea1a30245b47944682358a28ba44e42e5280516dbd",
+    "size": 2222
+  },
+  {
+    "path": "base/config.json",
+    "sha256": "6b2b54fa9bf5a5dfd0e19fafa231cfc38254f41f94234f7171a7c28f8fa2dd27",
+    "size": 72
+  },
+  {
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+    "sha256": "f8ca6e7765b461685ef1034fe6bbac8a0cfc3f79802ab1124b53701d844c71e2",
+    "size": 184
+  },
+  {
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+    "sha256": "aab6b2682052411c08897f4110c0ffa6751101adbb0d6c78dd9230cc3b560464",
+    "size": 80
+  },
+  {
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+    "sha256": "b021e204ddf3717a0c83d04a3d96ab4d0d5e05d85b041e827c8855d9d4466831",
+    "size": 184
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+    "sha256": "0dd5e35e1abcd5f9254def68b05f5df8ecc5dde52feac29a46c323ee2e7a6a2a",
+    "size": 217
+  }
+]

base/config.json

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+{
+  "architectures": [
+    "FixtureModel"
+  ],
+  "tokenizer": "clean"
+}

base/model.safetensors

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+oid sha256:f8ca6e7765b461685ef1034fe6bbac8a0cfc3f79802ab1124b53701d844c71e2
+size 184

derived/config.json

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+{
+  "architectures": [
+    "FixtureModel"
+  ],
+  "tokenizer": "role-remapped"
+}

derived/model.safetensors

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+oid sha256:b021e204ddf3717a0c83d04a3d96ab4d0d5e05d85b041e827c8855d9d4466831
+size 184

lineage.json

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+{
+  "derived_sha256": "b021e204ddf3717a0c83d04a3d96ab4d0d5e05d85b041e827c8855d9d4466831",
+  "parent_sha256": "f8ca6e7765b461685ef1034fe6bbac8a0cfc3f79802ab1124b53701d844c71e2",
+  "relationship": "synthetic-derived"
+}