Add Railiance WP-0025 custody adapter
Implement src/whitehat_security/platform_custody.py and focused tests against the four custody schemas. Live admission still fails closed without a value-safe projection receipt. No new engagement or traffic. Assistant: grok Assistant-Session: 01a02670-3345-76f2-a014-70fde8e2a2bb
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5 changed files with 527 additions and 3 deletions
3
SCOPE.md
3
SCOPE.md
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@ -65,7 +65,8 @@ boundary always holds.
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## Current state
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- Repository status: active.
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- Active plan: `WHITEHAT-WP-0001`. Meantime polish: `WHITEHAT-WP-0002`.
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- Active plan: `WHITEHAT-WP-0001`. Meantime polish: `WHITEHAT-WP-0002` and
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`WHITEHAT-WP-0003` (Railiance WP-0025 custody adapter).
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- `T01` is complete: the rules of engagement were accepted on 2026-08-21.
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- `T02` is complete: the per-axis attacker model is recorded in
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`docs/attacker-model.md`.
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@ -13,7 +13,8 @@ from .e3 import CADENCE, PROBES, e3_calibration
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from .engagement import AuthorizationError, Engagement
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from .fixtures import FixtureService, probe_suite
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from .model import RunReport, utc_now
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from .plane import KillSwitch, ReceiptBroker, admit, default_broker, retired_ids
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from .plane import KillSwitch, admit, default_broker, retired_ids
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from .platform_custody import broker_from_receipt
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from .reporting import queue_risk_nexus, risk_nexus_message
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from .targets import load_catalog, load_registration
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@ -91,6 +92,7 @@ def main(argv: list[str] | None = None) -> None:
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admit_plane.add_argument("engagement")
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admit_plane.add_argument("registration")
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admit_plane.add_argument("--receipt", help="value-safe custody projection receipt")
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admit_plane.add_argument("--contract", help="WP-0025 projection contract bound to the receipt")
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commands.add_parser("kill-switch")
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deliver = commands.add_parser("deliver")
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deliver.add_argument("report")
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@ -140,7 +142,8 @@ def main(argv: list[str] | None = None) -> None:
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record = Engagement.load(args.engagement)
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registration = load_registration(args.registration)
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broker = (
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ReceiptBroker.load(args.receipt) if args.receipt else default_broker(record)
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broker_from_receipt(args.receipt, contract_path=args.contract)
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if args.receipt else default_broker(record)
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)
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lease = admit(engagement=record, registration=registration,
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broker=broker, kill_switch=KillSwitch(),
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237
src/whitehat_security/platform_custody.py
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237
src/whitehat_security/platform_custody.py
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@ -0,0 +1,237 @@
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"""Consume Railiance WP-0025 custody documents. Never reads secret values."""
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from __future__ import annotations
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import json
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import os
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from datetime import UTC, datetime
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from pathlib import Path
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from typing import Any
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from .engagement import AuthorizationError, Engagement
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from .plane import IdentityHandle
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CONTRACT_INTERFACE = "railiance.custody-projection-contract"
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BROKER_INTERFACE = "railiance.custody-broker-readiness"
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PROJECTION_INTERFACE = "railiance.custody-projection-receipt"
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CLEANUP_INTERFACE = "railiance.custody-cleanup-receipt"
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SCHEMA_FILES = (
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"custody-projection-contract.schema.json",
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"custody-broker-readiness.schema.json",
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"custody-projection-receipt.schema.json",
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"custody-cleanup-receipt.schema.json",
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)
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FORBIDDEN_KEYS = {
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"token", "tokens", "password", "secret_value", "secret_values",
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"bearer", "private_key", "credential",
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}
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def schema_dir() -> Path:
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override = os.environ.get("WHITEHAT_CUSTODY_SCHEMA_DIR")
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if override:
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path = Path(override)
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if path.is_dir():
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return path
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raise AuthorizationError("WHITEHAT_CUSTODY_SCHEMA_DIR is not a directory")
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sibling = Path(__file__).resolve().parents[2].parent / "railiance-platform" / "schemas"
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if sibling.is_dir():
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return sibling
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raise AuthorizationError("railiance custody schemas are not available")
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def load_schemas() -> dict[str, dict[str, Any]]:
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root = schema_dir()
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loaded: dict[str, dict[str, Any]] = {}
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for name in SCHEMA_FILES:
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path = root / name
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try:
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loaded[name] = json.loads(path.read_text(encoding="utf-8"))
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except (OSError, json.JSONDecodeError) as error:
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raise AuthorizationError(f"custody schema unavailable: {name}") from error
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if loaded[name].get("$schema") != "https://json-schema.org/draft/2020-12/schema":
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raise AuthorizationError(f"custody schema {name} has the wrong $schema")
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return loaded
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def _assert_value_safe(value: Any) -> None:
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if isinstance(value, dict):
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for key, child in value.items():
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if str(key).lower().replace("-", "_") in FORBIDDEN_KEYS:
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raise AuthorizationError(f"custody document contains secret material: {key}")
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_assert_value_safe(child)
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elif isinstance(value, list):
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for child in value:
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_assert_value_safe(child)
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def _require(document: dict[str, Any], key: str) -> Any:
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if key not in document:
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raise AuthorizationError(f"custody document missing {key}")
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return document[key]
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def _timestamp(value: Any, field: str) -> datetime:
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if not isinstance(value, str):
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raise AuthorizationError(f"{field} must be RFC3339")
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try:
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parsed = datetime.fromisoformat(value.replace("Z", "+00:00"))
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except ValueError as error:
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raise AuthorizationError(f"{field} must be RFC3339") from error
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if parsed.tzinfo is None:
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raise AuthorizationError(f"{field} must include a timezone")
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return parsed.astimezone(UTC)
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def validate_projection_contract(document: dict[str, Any]) -> dict[str, Any]:
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_assert_value_safe(document)
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if document.get("interface") != CONTRACT_INTERFACE or document.get("version") != 1:
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raise AuthorizationError("unsupported projection contract")
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if document.get("status") != "approved":
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raise AuthorizationError("projection contract is not approved")
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identities = document.get("identities")
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if not isinstance(identities, list) or len(identities) != 2:
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raise AuthorizationError("projection contract must name two identities")
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roles = {item.get("role") for item in identities if isinstance(item, dict)}
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handles = {item.get("handle") for item in identities if isinstance(item, dict)}
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if roles != {"attacker", "owner"} or handles != {"token-a", "token-b"}:
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raise AuthorizationError("projection contract identities are not attacker/owner token-a/token-b")
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return document
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def validate_projection_receipt(
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document: dict[str, Any], *, contract: dict[str, Any] | None = None
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) -> dict[str, Any]:
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_assert_value_safe(document)
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if document.get("interface") != PROJECTION_INTERFACE or document.get("version") != 1:
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raise AuthorizationError("unsupported projection receipt")
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if document.get("state") != "projected":
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raise AuthorizationError("projection receipt is not in projected state")
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if document.get("secret_values_observed") is not False:
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raise AuthorizationError("projection receipt did not prove secret values were unobserved")
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if document.get("cleanup_authority") != "railiance-platform":
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raise AuthorizationError("cleanup authority must be railiance-platform")
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lease_id = _require(document, "lease_id")
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if not isinstance(lease_id, str) or not lease_id.startswith("custody:"):
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raise AuthorizationError("projection receipt lease_id is invalid")
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identities = document.get("identities")
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if not isinstance(identities, list) or len(identities) != 2:
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raise AuthorizationError("projection receipt must name two identities")
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roles = {item.get("role") for item in identities if isinstance(item, dict)}
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if roles != {"attacker", "owner"}:
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raise AuthorizationError("projection receipt must include attacker and owner")
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if contract is not None:
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validate_projection_contract(contract)
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if document.get("engagement_id") != contract["engagement_id"]:
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raise AuthorizationError("projection receipt engagement_id does not match contract")
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return document
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def validate_cleanup_receipt(
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document: dict[str, Any], *, projection: dict[str, Any]
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) -> dict[str, Any]:
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_assert_value_safe(document)
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if document.get("interface") != CLEANUP_INTERFACE or document.get("version") != 1:
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raise AuthorizationError("unsupported cleanup receipt")
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if document.get("state") != "cleaned":
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raise AuthorizationError("cleanup receipt is not in cleaned state")
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if document.get("secret_values_observed") is not False:
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raise AuthorizationError("cleanup receipt did not prove secret values were unobserved")
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if document.get("lease_id") != projection.get("lease_id"):
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raise AuthorizationError("cleanup receipt lease_id does not match projection")
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if document.get("engagement_id") != projection.get("engagement_id"):
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raise AuthorizationError("cleanup receipt engagement_id does not match projection")
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if document.get("projection_receipt_id") != projection.get("receipt_id"):
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raise AuthorizationError("cleanup receipt is not bound to this projection receipt")
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if document.get("target_ready") is not True:
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raise AuthorizationError("cleanup receipt does not show a ready target")
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return document
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def validate_broker_readiness(document: dict[str, Any]) -> dict[str, Any]:
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_assert_value_safe(document)
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if document.get("interface") != BROKER_INTERFACE or document.get("version") != 1:
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raise AuthorizationError("unsupported broker readiness receipt")
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if document.get("owner") != "whitehat-security":
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raise AuthorizationError("broker readiness owner must be whitehat-security")
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if document.get("secret_values_observed") is not False:
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raise AuthorizationError("broker readiness receipt is not value-safe")
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return document
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class PlatformCustodyBroker:
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"""Issue plane identity handles from a WP-0025 projection receipt."""
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cleanup_request_supported = True
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def __init__(
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self,
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receipt: dict[str, Any],
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*,
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contract: dict[str, Any] | None = None,
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cleanup: dict[str, Any] | None = None,
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) -> None:
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self.receipt = validate_projection_receipt(receipt, contract=contract)
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self.contract = validate_projection_contract(contract) if contract is not None else None
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self.cleanup = (
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validate_cleanup_receipt(cleanup, projection=self.receipt) if cleanup is not None else None
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)
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@classmethod
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def load(
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cls,
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receipt_path: str | Path,
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*,
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contract_path: str | Path | None = None,
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cleanup_path: str | Path | None = None,
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) -> "PlatformCustodyBroker":
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receipt = json.loads(Path(receipt_path).read_text(encoding="utf-8"))
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contract = (
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json.loads(Path(contract_path).read_text(encoding="utf-8"))
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if contract_path is not None else None
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)
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cleanup = (
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json.loads(Path(cleanup_path).read_text(encoding="utf-8"))
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if cleanup_path is not None else None
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)
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return cls(receipt, contract=contract, cleanup=cleanup)
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def project(self, engagement: Engagement, registration: dict[str, Any]
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) -> tuple[IdentityHandle, ...]:
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if self.receipt.get("engagement_id") != engagement.raw["engagement_id"]:
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raise AuthorizationError("projection receipt engagement_id does not match")
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expiry = _timestamp(self.receipt["expires_at"], "expires_at")
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if datetime.now(UTC) > expiry:
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raise AuthorizationError("projection receipt has expired")
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count = int(registration["identities"]["count"])
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identities = self.receipt["identities"]
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if len(identities) != count:
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raise AuthorizationError("projection receipt identity count does not match registration")
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handles = []
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for item in sorted(identities, key=lambda row: str(row.get("handle"))):
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role = item["role"]
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mount_path = item["mount_path"]
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if not str(mount_path).startswith("/var/run/secrets/whitehat/"):
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raise AuthorizationError("identity mount_path is outside the whitehat mount")
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handles.append(IdentityHandle(role, mount_path, self.receipt["lease_id"],
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self.receipt["expires_at"]))
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return tuple(handles)
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def revoke(self, lease_id: str) -> None:
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if self.cleanup is None:
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raise AuthorizationError(
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"receipt broker does not hold credentials; custody must revoke the projection"
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)
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if self.cleanup["lease_id"] != lease_id:
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raise AuthorizationError("cleanup receipt lease_id does not match plane lease")
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def broker_from_receipt(
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path: str | Path, *, contract_path: str | Path | None = None
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) -> Any:
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"""Select the WP-0025 adapter or the legacy value-safe receipt broker."""
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data = json.loads(Path(path).read_text(encoding="utf-8"))
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if data.get("interface") == PROJECTION_INTERFACE:
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return PlatformCustodyBroker.load(path, contract_path=contract_path)
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from .plane import ReceiptBroker
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return ReceiptBroker(data)
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245
tests/test_platform_custody_adapter.py
Normal file
245
tests/test_platform_custody_adapter.py
Normal file
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@ -0,0 +1,245 @@
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import json
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from datetime import UTC, datetime
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import pytest
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from whitehat_security.engagement import AuthorizationError, Engagement
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from whitehat_security.platform_custody import (
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CLEANUP_INTERFACE, CONTRACT_INTERFACE, PROJECTION_INTERFACE,
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PlatformCustodyBroker, load_schemas, validate_broker_readiness,
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validate_cleanup_receipt, validate_projection_contract,
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validate_projection_receipt,
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)
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from whitehat_security.plane import KillSwitch, admit
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NOW = datetime(2026, 8, 22, 12, tzinfo=UTC)
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def contract() -> dict:
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return {
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"interface": CONTRACT_INTERFACE,
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"version": 1,
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"workplan_id": "RAILIANCE-WP-0025",
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"engagement_id": "WH-ENG-FIXTURE-1",
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"status": "approved",
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"engagement_contract_sha256": "1" * 64,
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"target": {
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"id": "audit-core",
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"namespace": "audit-core",
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"deployment": "audit-core",
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"container": "audit-core",
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"sender_external_secret": "audit-core-senders",
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"revision": "a" * 40,
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"image_digest": "sha256:" + "b" * 64,
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"contract_sha256": "c" * 64,
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},
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"runner": {
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"namespace": "whitehat",
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"service_account": "whitehat-runner",
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"secret_name": "whitehat-e2-audit-credentials",
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"mount_root": "/var/run/secrets/whitehat",
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"manifest_sha256": "d" * 64,
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},
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"window": {
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"starts_at": "2026-08-22T12:00:00Z",
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"projection_cutoff": "2026-08-22T12:03:00Z",
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"expires_at": "2099-01-01T00:00:00Z",
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},
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"authority": {
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"remote": "railiance01",
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"registry_path": "platform/workloads/audit-core/senders",
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"registry_field": "senders.json",
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"kv_mount": "platform",
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"kv_prefix": "engagements/WH-ENG-FIXTURE-1/audit-core",
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"eso_service_account": "external-secrets",
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"eso_namespace": "external-secrets",
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},
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"identities": [
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{
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"handle": "token-a",
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"role": "attacker",
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"sender_name": "whitehat-e2-a",
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"tenant": "tenant-a",
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"mount_path": "/var/run/secrets/whitehat/token-a",
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"may_read": True,
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"may_write": True,
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},
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{
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"handle": "token-b",
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"role": "owner",
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"sender_name": "whitehat-e2-b",
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"tenant": "tenant-b",
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"mount_path": "/var/run/secrets/whitehat/token-b",
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"may_read": True,
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"may_write": True,
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},
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],
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}
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def projection_receipt() -> dict:
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return {
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"interface": PROJECTION_INTERFACE,
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"version": 1,
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"workplan_id": "RAILIANCE-WP-0025",
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"state": "projected",
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"receipt_id": "sha256:" + "e" * 64,
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"lease_id": "custody:" + "f" * 32,
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"engagement_id": "WH-ENG-FIXTURE-1",
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"target": {"id": "audit-core", "revision": "a" * 40, "image_digest": "sha256:" + "b" * 64},
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"projection_contract_digest": "1" * 64,
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"broker_receipt_digest": "2" * 64,
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"projected_at": "2026-08-22T12:02:00Z",
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"expires_at": "2099-01-01T00:00:00Z",
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"identities": [
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{
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"handle": "token-a",
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"role": "attacker",
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"sender_name": "whitehat-e2-a",
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"mount_path": "/var/run/secrets/whitehat/token-a",
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},
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{
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"handle": "token-b",
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"role": "owner",
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"sender_name": "whitehat-e2-b",
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"mount_path": "/var/run/secrets/whitehat/token-b",
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},
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],
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"resources": {"names": {"store": "custody-example"}, "uids": {"mounted_secret": "uid"}},
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"cleanup_authority": "railiance-platform",
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"secret_values_observed": False,
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}
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def cleanup_receipt() -> dict:
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return {
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"interface": CLEANUP_INTERFACE,
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"version": 1,
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"workplan_id": "RAILIANCE-WP-0025",
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"state": "cleaned",
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"lease_id": "custody:" + "f" * 32,
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"engagement_id": "WH-ENG-FIXTURE-1",
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"projection_receipt_id": "sha256:" + "e" * 64,
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"cleaned_at": "2026-08-22T12:14:00Z",
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"removed_resources": ["custody-example"],
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"target_ready": True,
|
||||
"secret_values_observed": False,
|
||||
}
|
||||
|
||||
|
||||
def broker_readiness() -> dict:
|
||||
return {
|
||||
"interface": "railiance.custody-broker-readiness",
|
||||
"version": 1,
|
||||
"workplan_id": "RAILIANCE-WP-0025",
|
||||
"owner": "whitehat-security",
|
||||
"reviewer": "whitehat-owner",
|
||||
"decision": "approve",
|
||||
"created_at": "2026-08-22T12:00:00Z",
|
||||
"engagement_id": "WH-ENG-FIXTURE-1",
|
||||
"target_id": "audit-core",
|
||||
"projection_contract_digest": "1" * 64,
|
||||
"projection_receipt_interface": PROJECTION_INTERFACE,
|
||||
"interface_artifacts": {
|
||||
"schemas/custody-projection-contract.schema.json": "a" * 64,
|
||||
"schemas/custody-broker-readiness.schema.json": "b" * 64,
|
||||
"schemas/custody-projection-receipt.schema.json": "c" * 64,
|
||||
"schemas/custody-cleanup-receipt.schema.json": "d" * 64,
|
||||
},
|
||||
"required_roles": ["attacker", "owner"],
|
||||
"mount_paths": [
|
||||
"/var/run/secrets/whitehat/token-a",
|
||||
"/var/run/secrets/whitehat/token-b",
|
||||
],
|
||||
"adapter": {
|
||||
"repo": "whitehat-security",
|
||||
"revision": "a" * 40,
|
||||
"path": "src/whitehat_security/platform_custody.py",
|
||||
"sha256": "b" * 64,
|
||||
"tests_passed": True,
|
||||
},
|
||||
"cleanup_request_supported": True,
|
||||
"secret_values_observed": False,
|
||||
}
|
||||
|
||||
|
||||
def live_record():
|
||||
return {
|
||||
"engagement_id": "WH-ENG-FIXTURE-1", "authorization_id": "auth-1",
|
||||
"authorizer": "operator", "approved_at": "2026-08-22T11:00:00Z",
|
||||
"expires_at": "2099-01-01T00:00:00Z", "target": "https://fixture.invalid",
|
||||
"target_id": "audit-core", "target_owner": "audit-core",
|
||||
"environment": "build", "source": "runner", "approval_class": "live-e2",
|
||||
"plane_namespace": "whitehat", "runner_image_digest": "sha256:abc",
|
||||
"routes": ["POST /v1/events"], "fixture_ids": ["a", "b"],
|
||||
"credential_lane": "receipt", "credential_role": "runtime",
|
||||
"credential_max_ttl_seconds": 900, "techniques": ["e2-differential"],
|
||||
"prohibited_techniques": ["saturation"], "rate_limit_per_minute": 10,
|
||||
"max_concurrency": 1, "window_start": "2026-08-22T11:00:00Z",
|
||||
"window_end": "2099-01-01T00:00:00Z", "operator_contact": "operator",
|
||||
"abort_contact": "operator", "posture_claim": "E2",
|
||||
"attacker_model": "E2-authenticated-tenant-a",
|
||||
"finding_destination": "risk-nexus",
|
||||
"target_owner_acknowledged_at": "2026-08-22T11:01:00Z",
|
||||
}
|
||||
|
||||
|
||||
def test_four_custody_schemas_are_published():
|
||||
schemas = load_schemas()
|
||||
assert set(schemas) == {
|
||||
"custody-projection-contract.schema.json",
|
||||
"custody-broker-readiness.schema.json",
|
||||
"custody-projection-receipt.schema.json",
|
||||
"custody-cleanup-receipt.schema.json",
|
||||
}
|
||||
assert "custody-projection-contract" in schemas["custody-projection-contract.schema.json"]["$id"]
|
||||
assert "custody-broker-readiness" in schemas["custody-broker-readiness.schema.json"]["$id"]
|
||||
assert "custody-projection-receipt" in schemas["custody-projection-receipt.schema.json"]["$id"]
|
||||
assert "custody-cleanup-receipt" in schemas["custody-cleanup-receipt.schema.json"]["$id"]
|
||||
|
||||
|
||||
def test_adapter_validates_all_four_document_kinds():
|
||||
assert validate_projection_contract(contract())["engagement_id"] == "WH-ENG-FIXTURE-1"
|
||||
assert validate_projection_receipt(projection_receipt(), contract=contract())["state"] == "projected"
|
||||
assert validate_cleanup_receipt(cleanup_receipt(), projection=projection_receipt())["state"] == "cleaned"
|
||||
assert validate_broker_readiness(broker_readiness())["owner"] == "whitehat-security"
|
||||
|
||||
|
||||
def test_adapter_rejects_secret_material():
|
||||
tainted = projection_receipt()
|
||||
tainted["token"] = "never"
|
||||
with pytest.raises(AuthorizationError, match="secret material"):
|
||||
validate_projection_receipt(tainted)
|
||||
|
||||
|
||||
def test_platform_broker_issues_handles_and_supports_cleanup(tmp_path):
|
||||
path = tmp_path / "engagement.json"
|
||||
path.write_text(json.dumps(live_record()), encoding="utf-8")
|
||||
engagement = Engagement.load(path, now=NOW)
|
||||
broker = PlatformCustodyBroker(projection_receipt(), contract=contract())
|
||||
assert broker.cleanup_request_supported is True
|
||||
from whitehat_security.targets import load_registration
|
||||
lease = admit(
|
||||
engagement=engagement,
|
||||
registration=load_registration("targets/audit-core-e2.json"),
|
||||
broker=broker,
|
||||
kill_switch=KillSwitch(tmp_path / "KILL"),
|
||||
now=NOW,
|
||||
retired=set(),
|
||||
)
|
||||
assert {handle.role for handle in lease.identities} == {"attacker", "owner"}
|
||||
assert lease.lease_id.startswith("custody:")
|
||||
with pytest.raises(AuthorizationError, match="custody must revoke"):
|
||||
broker.revoke(lease.lease_id)
|
||||
cleaned = PlatformCustodyBroker(
|
||||
projection_receipt(), contract=contract(), cleanup=cleanup_receipt()
|
||||
)
|
||||
cleaned.revoke(lease.lease_id)
|
||||
|
||||
|
||||
def test_cleanup_receipt_must_match_lease():
|
||||
with pytest.raises(AuthorizationError, match="lease_id"):
|
||||
bad = cleanup_receipt()
|
||||
bad["lease_id"] = "custody:" + "0" * 32
|
||||
validate_cleanup_receipt(bad, projection=projection_receipt())
|
||||
38
workplans/WHITEHAT-WP-0003-platform-custody-adapter.md
Normal file
38
workplans/WHITEHAT-WP-0003-platform-custody-adapter.md
Normal file
|
|
@ -0,0 +1,38 @@
|
|||
---
|
||||
id: WHITEHAT-WP-0003
|
||||
type: workplan
|
||||
title: "Consume the Railiance WP-0025 custody broker interface"
|
||||
domain: infotech
|
||||
repo: whitehat-security
|
||||
status: finished
|
||||
owner: net-kingdom
|
||||
topic_slug: whitehat-security
|
||||
created: "2026-08-22"
|
||||
updated: "2026-08-22"
|
||||
---
|
||||
|
||||
# WHITEHAT-WP-0003 — platform custody adapter
|
||||
|
||||
## Goal
|
||||
|
||||
Implement the consumer Railiance asked for after `-02` aborted: a value-safe
|
||||
adapter at `src/whitehat_security/platform_custody.py` that understands the
|
||||
four WP-0025 custody schemas and can issue a plane lease from a projection
|
||||
receipt without seeing token values.
|
||||
|
||||
This plan authorizes no engagement, runner, credential, or traffic.
|
||||
|
||||
## Tasks
|
||||
|
||||
### T01 — Schema-bound adapter and focused tests
|
||||
|
||||
```task
|
||||
id: WHITEHAT-WP-0003-T01
|
||||
status: done
|
||||
priority: high
|
||||
```
|
||||
|
||||
Adapter plus `tests/test_platform_custody_adapter.py`. Cleanup receipts can
|
||||
acknowledge a lease. Secret material is refused. `admit-plane --receipt`
|
||||
selects this adapter when the document uses
|
||||
`railiance.custody-projection-receipt`.
|
||||
Loading…
Add table
Add a link
Reference in a new issue