Sprint 20 Engineering Log

Program Context

Phase: Phase 5.5
Sprint: Sprint 20
Status: Completed
Primary Architecture Layers: Identity and Policy Plane, Control Plane, Armory Governance

Implement high-assurance AAA controls for privileged operations and high-risk execution endorsement.

Completed Sprint 20 controls:

Enforced hardware-backed MFA assertions for privileged authorization in AAA flow.
Added time-bound privilege elevation token validator hook for privileged actions.
Added dual-control approval quorum for Armory tool authorization.
Added dual-signature enforcement for high-risk manifests (high and critical risk levels).
Implemented break-glass token workflow with irreversible audit flag recording.
Added privileged session recording support with start/command/end events and integrity-audit emission.

Privileged actions now require stronger identity proof and just-in-time elevation controls.
Armory authorization now enforces multi-person approval to reduce insider abuse risk.
High-risk manifest execution now requires independent dual cryptographic endorsement.
Break-glass path remains available but permanently attributable in audit history.

Commands:

PYTHONPATH=src .venv/bin/pytest -q tests/unit/test_aaa_framework.py
PYTHONPATH=src .venv/bin/pytest -q tests/unit/test_armory_service.py
PYTHONPATH=src .venv/bin/pytest -q tests/unit/test_high_assurance_security.py
PYTHONPATH=src .venv/bin/pytest -q tests/unit/test_orchestrator_dual_signature.py
PYTHONPATH=src .venv/bin/pytest -q tests/qa/test_sprint20_high_assurance_qa.py

Residual risk:

Hardware assertion verification backend is abstracted and requires production hardware attestation provider integration.
Session recording is in-memory in current implementation and should be persisted to immutable evidence store in future sprint.

Sprint 21 adds deterministic execution guarantees for canonical manifest serialization and schema regression controls.