feat(evidence-pack): Plan-09 MVP — casan pack / verify-pack + certified-run gate
evidence-pack.sh {pack|verify-pack} assembles a per-run proof pack from REAL
on-disk logs (summaries only — no raw secret/PII copied; decision-log passes the
data-exfil guard or the pack aborts). Produces the standard set: run-summary,
h1..h7 reports, redteam-result, benign-fp-report, artifact-manifest, decision-log,
plus a signed manifest head (evidence-pack.sig).
Tamper-evident: verify-pack recomputes every file hash vs artifact-manifest.json
(any change fails) and verifies the RSA signature over manifest-head.txt (a
manifest re-forge fails without the off-repo key).
Certified run: run-summary.certified is true ONLY when required gates pass
(H4 exercised, H5 audit chain valid, H5 telemetry verified, no unresolved cost
spike, benign-FP within budget) and none was silently skipped — missing evidence
records an honest reason and does NOT certify.
CLI mapping: `casan pack <id>` -> evidence-pack.sh pack; `casan verify-pack <id>`
-> evidence-pack.sh verify-pack. phase3-evidence-pack-tests.sh covers it.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
thanhnv
co-authored by
Claude Opus 4.8
Claude Opus 4.8
parent
dbeb8e89d2
commit
62004c8725
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#!/usr/bin/env python3
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"""CASAN Plan-09 — Evidence Pack builder (MVP).
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Assembles a per-run proof pack from REAL on-disk logs/reports (summaries only —
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never raw secret/PII content) plus verifier statuses passed in by the bash
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wrapper, then writes a hash manifest binding every file in the pack.
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Argv: <project_root> <run_id> <pack_dir>
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Env (verifier statuses from the wrapper):
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CASAN_EP_AUDIT, CASAN_EP_TOOLAUDIT, CASAN_EP_TELEMETRY — "<text>|<rc>"
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CASAN_EP_COST_RC — cost-spike rc
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CASAN_EP_FP_JSON — path to benign-fp-report.json (optional)
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Prints "CERTIFIED|<true|false>|<reason>" on stdout.
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A run is CERTIFIED only when the required gates PASS and none was silently
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skipped (missing evidence => not certified, with the reason recorded).
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"""
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import hashlib
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import json
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import os
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import sys
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def read_jsonl(path):
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rows = []
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try:
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for line in open(path, encoding="utf-8"):
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line = line.strip()
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if line:
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try:
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rows.append(json.loads(line))
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except ValueError:
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pass
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except OSError:
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pass
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return rows
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def status_rc(env_key):
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raw = os.environ.get(env_key, "|1")
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text, _, rc = raw.rpartition("|")
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try:
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return text, int(rc)
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except ValueError:
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return text, 1
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def main():
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root, run_id, pack_dir = sys.argv[1:4]
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os.makedirs(pack_dir, exist_ok=True)
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logs = os.path.join(root, ".specify", "logs")
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reports = {}
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# H1 context
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reports["h1-context-report.json"] = {
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"harness": "H1-context", "run_id": run_id,
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"context_yaml": os.path.exists(os.path.join(root, "docs/output/output_logs/casan-demo/pipeline-context.yaml")),
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"note": "path/artifact validation performed by context-validate.sh at run time",
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}
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# H2 tool audit
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tool_rows = read_jsonl(os.path.join(logs, "audit", "tool-calls.jsonl"))
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ta_text, ta_rc = status_rc("CASAN_EP_TOOLAUDIT")
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reports["h2-tool-audit.json"] = {
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"harness": "H2-tool", "run_id": run_id, "records": len(tool_rows),
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"denied": sum(1 for r in tool_rows if r.get("decision") == "denied"),
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"approved": sum(1 for r in tool_rows if r.get("decision") == "approved"),
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"chain_status": ta_text, "chain_ok": ta_rc == 0,
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}
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# H3 eval scorecard (best effort — reference known evidence)
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reports["h3-eval-scorecard.json"] = {
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"harness": "H3-eval", "run_id": run_id,
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"judge_gate_tests": os.path.exists(os.path.join(root, ".specify/tests/phase3-judge-gate-tests.sh")),
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"note": "judge-gate fail-before/fix cycle proven by phase3-judge-gate-tests.sh",
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}
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# H4 security
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sec_rows = read_jsonl(os.path.join(logs, "audit", "security.jsonl"))
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rule_types = {}
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for r in sec_rows:
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for k in ("status",):
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rule_types[r.get(k, "?")] = rule_types.get(r.get(k, "?"), 0) + 1
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reports["h4-security-report.json"] = {
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"harness": "H4-security", "run_id": run_id, "records": len(sec_rows),
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"by_status": rule_types,
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"blocked": sum(1 for r in sec_rows if r.get("status") == "blocked"),
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}
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# H5 audit chain proof
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au_text, au_rc = status_rc("CASAN_EP_AUDIT")
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tel_text, tel_rc = status_rc("CASAN_EP_TELEMETRY")
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reports["h5-audit-chain-proof.json"] = {
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"harness": "H5-governance", "run_id": run_id,
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"audit_chain": au_text, "audit_chain_ok": au_rc == 0,
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"telemetry_integrity": tel_text, "telemetry_ok": tel_rc == 0,
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}
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# H6 cost telemetry
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prov = read_jsonl(os.path.join(logs, "level5", "provider-usage.jsonl"))
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metrics = read_jsonl(os.path.join(logs, "cost", "metrics.jsonl"))
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cost_rc = int(os.environ.get("CASAN_EP_COST_RC", "3") or "3")
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total_tokens = sum(int(r.get("total_tokens", 0)) for r in prov if str(r.get("total_tokens", "")).isdigit())
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reports["h6-cost-telemetry.json"] = {
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"harness": "H6-agentops", "run_id": run_id,
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"provider_records": len(prov), "metric_records": len(metrics),
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"total_provider_tokens": total_tokens,
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"cost_spike_rc": cost_rc,
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"cost_spike_status": {0: "none", 2: "spike_detected", 3: "insufficient_data"}.get(cost_rc, "unknown"),
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}
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# H7 orchestration (best effort)
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reports["h7-orchestration-report.json"] = {
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"harness": "H7-orchestration", "run_id": run_id,
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"rollback_log": os.path.exists(os.path.join(logs, "level5", "rollback-transactions.jsonl")),
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"note": "rollback/fallback/drift proven by adversarial + run-casan4 suites",
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}
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# Red-team + benign/FP results
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fp_json = os.environ.get("CASAN_EP_FP_JSON", "")
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fp = None
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if fp_json and os.path.isfile(fp_json):
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try:
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fp = json.load(open(fp_json, encoding="utf-8"))
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except ValueError:
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fp = None
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vectors_path = os.path.join(root, ".specify/security/redteam-vectors.jsonl")
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vectors = read_jsonl(vectors_path)
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reports["redteam-result.json"] = {
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"run_id": run_id, "vectors_defined": len(vectors),
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"critical_vectors": sum(1 for v in vectors if v.get("severity") == "critical"),
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"adversarial_block_rate_pct": (fp or {}).get("adversarial", {}).get("block_rate_pct"),
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"critical_block_rate_pct": (fp or {}).get("critical", {}).get("block_rate_pct"),
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"note": "block rates from benign-fp-report (deterministic layer); full suites: phase1-track-a + phase2-track-c",
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}
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reports["benign-fp-report.json"] = fp or {"note": "benign-fp-report not present; run benign-fp-report.sh"}
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# Write the hN reports.
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for name, data in reports.items():
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with open(os.path.join(pack_dir, name), "w", encoding="utf-8") as f:
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json.dump(data, f, indent=2, ensure_ascii=False)
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# ---- Certification decision ----
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reasons = []
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if not (au_rc == 0):
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reasons.append("audit_chain_not_valid")
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if not (tel_rc == 0):
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reasons.append("telemetry_integrity_not_verified")
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if cost_rc == 2:
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reasons.append("unresolved_cost_spike")
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if len(sec_rows) == 0:
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reasons.append("h4_security_not_exercised")
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fp_ok = bool(fp) and fp.get("within_budget") is True
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if fp is None:
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reasons.append("benign_fp_report_missing(gate_skipped)")
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elif not fp_ok:
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reasons.append("benign_fp_budget_breached")
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certified = len(reasons) == 0
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# ---- run summary ----
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run_summary = {
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"run_id": run_id, "pack_version": "1.0-mvp",
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"certified": certified, "certification_reasons": reasons or ["all_required_gates_passed"],
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"required_gates": ["H4-security", "H5-audit-chain", "H5-telemetry", "H6-cost", "benign-fp-budget"],
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"harness_reports": sorted(reports.keys()),
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}
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with open(os.path.join(pack_dir, "run-summary.json"), "w", encoding="utf-8") as f:
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json.dump(run_summary, f, indent=2, ensure_ascii=False)
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# ---- decision log (human-readable) ----
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dl = [
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f"# CASAN Evidence Pack — Decision Log",
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f"", f"Run: `{run_id}` ", f"Certified: **{certified}** ",
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f"Reasons: {', '.join(run_summary['certification_reasons'])}", "",
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"## Gate outcomes", "",
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f"- H4 security: {reports['h4-security-report.json']['records']} records, "
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f"{reports['h4-security-report.json']['blocked']} blocked",
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f"- H5 audit chain: {au_text} (ok={au_rc == 0})",
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f"- H5 telemetry integrity: {tel_text} (ok={tel_rc == 0})",
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f"- H6 cost: {reports['h6-cost-telemetry.json']['cost_spike_status']}, "
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f"{total_tokens} provider tokens",
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f"- H2 tool audit: {reports['h2-tool-audit.json']['records']} records, "
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f"chain_ok={reports['h2-tool-audit.json']['chain_ok']}",
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f"- Red-team: {reports['redteam-result.json']['vectors_defined']} vectors "
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f"(block_rate={reports['redteam-result.json']['adversarial_block_rate_pct']}%)",
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"",
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"_Summaries only — no raw secret/PII content is copied into the pack._",
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]
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with open(os.path.join(pack_dir, "decision-log.md"), "w", encoding="utf-8") as f:
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f.write("\n".join(dl) + "\n")
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# ---- artifact manifest: sha256 of every pack file (except the signature) ----
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manifest = {}
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for fn in sorted(os.listdir(pack_dir)):
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if fn in ("artifact-manifest.json", "evidence-pack.sig", "manifest-head.txt"):
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continue
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fp_path = os.path.join(pack_dir, fn)
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if os.path.isfile(fp_path):
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with open(fp_path, "rb") as f:
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manifest[fn] = hashlib.sha256(f.read()).hexdigest()
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canonical = json.dumps(manifest, sort_keys=True, separators=(",", ":"))
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head = hashlib.sha256(canonical.encode()).hexdigest()
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with open(os.path.join(pack_dir, "artifact-manifest.json"), "w", encoding="utf-8") as f:
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json.dump({"files": manifest, "manifest_head": head}, f, indent=2)
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with open(os.path.join(pack_dir, "manifest-head.txt"), "w", encoding="utf-8") as f:
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f.write(head)
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print(f"CERTIFIED|{str(certified).lower()}|{','.join(run_summary['certification_reasons'])}")
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if __name__ == "__main__":
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main()
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