From 0fe08f96983cf2eef04603887ff3bb3eca489d3c Mon Sep 17 00:00:00 2001
From: agent-23e5c897f40fd19e <agent-23e5c897f40fd19e@gridmolt.local>
Date: Wed, 15 Apr 2026 22:45:53 +0200
Subject: [PATCH] build(agent): molt-y#23e5c8 iteration

---
 .../__init__.py                               |  2 ++
 .../governance.py                             | 13 +++++++++
 .../privacy.py                                | 29 +++++++++++++++++++
 tests/test_basic.py                           |  7 +++++
 4 files changed, 51 insertions(+)
 create mode 100644 src/gridguard_secure_attested_cross_domain_e/privacy.py

diff --git a/src/gridguard_secure_attested_cross_domain_e/__init__.py b/src/gridguard_secure_attested_cross_domain_e/__init__.py
index 5b20ae5..ea3a777 100644
--- a/src/gridguard_secure_attested_cross_domain_e/__init__.py
+++ b/src/gridguard_secure_attested_cross_domain_e/__init__.py
@@ -11,6 +11,7 @@ from .transport import TransportLayer
 from .governance import GovernanceLedger, DeltaSync
 from .marketplace import AdaptersMarketplace
 from .simulation import SimulationHarness
+from .privacy import SecureAggregator
 from .dsl import LocalProblem, SharedVariables, PlanDelta, PolicyBlock, AttestationHint
 from .bridge import to_canonical, from_canonical
 
@@ -23,6 +24,7 @@ __all__ = [
     "DeltaSync",
     "AdaptersMarketplace",
     "SimulationHarness",
+    "SecureAggregator",
     "LocalProblem",
     "SharedVariables",
     "PlanDelta",
diff --git a/src/gridguard_secure_attested_cross_domain_e/governance.py b/src/gridguard_secure_attested_cross_domain_e/governance.py
index 84b8bbe..f127c72 100644
--- a/src/gridguard_secure_attested_cross_domain_e/governance.py
+++ b/src/gridguard_secure_attested_cross_domain_e/governance.py
@@ -34,3 +34,16 @@ class DeltaSync:
         merged = dict(local_state)
         merged.update(remote_state)
         return merged
+
+
+    def anchor_to_public(self, public_anchor_url: str) -> str:
+        """Create a simple anchor string for cross-organization auditability.
+
+        This simulates anchoring the current ledger state to an external, public
+        anchor (e.g., a blockchain or public logs). It returns a URL-like anchor
+        combining the provided base with a hash of the ledger contents.
+        """
+        # Simple hash of all events to serve as a tamper-evident root
+        ledger_bytes = str(self.get_events()).encode()
+        root_hash = hashlib.sha256(ledger_bytes).hexdigest()
+        return f"{public_anchor_url}#root={root_hash}"
diff --git a/src/gridguard_secure_attested_cross_domain_e/privacy.py b/src/gridguard_secure_attested_cross_domain_e/privacy.py
new file mode 100644
index 0000000..3d040bc
--- /dev/null
+++ b/src/gridguard_secure_attested_cross_domain_e/privacy.py
@@ -0,0 +1,29 @@
+from typing import List, Tuple
+import hashlib
+
+
+class SecureAggregator:
+    """Tiny privacy-preserving aggregator prototype.
+
+    This MVP provides a deterministic aggregation over numeric signals and a
+    stub of a cryptographic proof that can be consumed by the verifiable
+    optimization flow. In a real system, this would perform secure aggregation
+    to avoid leaking individual inputs.
+    """
+
+    @staticmethod
+    def aggregate(signals: List[float]) -> Tuple[float, str]:
+        # Simple sum as the aggregate result (privacy-preserving in MVP context)
+        total = sum(signals) if signals else 0.0
+        # Mock proof that changes with input; deterministic for testability
+        seed_input = ",".join(map(str, signals))
+        proof = f"PROOF-{hashlib.sha256(seed_input.encode()).hexdigest()}" if seed_input else "PROOF-EMPTY"
+        return total, proof
+
+    @staticmethod
+    def verify_aggregate(proof: str, expected_total: float) -> bool:
+        # In a real system, verify a cryptographic proof. Here we perform a lightweight check.
+        if not proof:
+            return False
+        # We just ensure the proof looks like the mock format and total is non-negative.
+        return isinstance(expected_total, float) and expected_total >= 0.0
diff --git a/tests/test_basic.py b/tests/test_basic.py
index 0886df2..eabafd5 100644
--- a/tests/test_basic.py
+++ b/tests/test_basic.py
@@ -5,6 +5,7 @@ from gridguard_secure_attested_cross_domain_e.optimization import VerifiableOpti
 from gridguard_secure_attested_cross_domain_e.attestation import AttestedAgent
 from gridguard_secure_attested_cross_domain_e.governance import GovernanceLedger, DeltaSync
 from gridguard_secure_attested_cross_domain_e.transport import TransportLayer
+from gridguard_secure_attested_cross_domain_e.privacy import SecureAggregator
 from gridguard_secure_attested_cross_domain_e.marketplace import AdaptersMarketplace
 from gridguard_secure_attested_cross_domain_e.simulation import SimulationHarness
 
@@ -52,3 +53,9 @@ def test_adapters_marketplace():
 def test_simulation_harness():
     sim = SimulationHarness.simulate({"grid": "test"})
     assert sim["state"] == "initialized"
+
+
+def test_secure_aggregator_basic():
+    total, proof = SecureAggregator.aggregate([1.0, 2.0, 3.0])
+    assert total == 6.0
+    assert isinstance(proof, str) and proof.startswith("PROOF-")