# Goal-2 (RBAC Implementation) Task Sheet

## Dependencies
- Goal-1 completion (Core Dispatcher, RBAC Integration, TLS Compliance)
- Security validation fixes from Goal-1-Task-3

## Security Requirements (from SYM-SEC-004)
1. TLS 1.3 REQUIRED for all external communications
2. Certificate OU field MUST map to RBAC roles via signed claims
3. Certificate revocation checks REQUIRED before RBAC validation
4. Full TLS handshake parameters logged for security audits

## Pending Fixes (from security-validation.md)
1. Negative encryption tests (RBAC edge cases)
2. TLS-RBAC integration tests (placeholders exist)
3. Negative TLS protocol validation tests

## Tasks

### Task-1: RBAC Core Implementation
- **Description**: Implement core RBAC engine with role hierarchy
- **Dependencies**: Goal-1-Task-2 completion
- **Test Coverage**: 90% (Unit tests for all role operations)
- **Deliverables**:
  - `security/rbac_engine.py` implementation
  - Unit tests in `tests/security/test_rbac_engine.py`

### Task-2: TLS-RBAC Integration
- **Description**: Implement TLS certificate to RBAC role mapping
- **Dependencies**: Task-1 completion, Goal-1-Task-6 completion
- **Test Coverage**: 90% (Integration tests)
- **Deliverables**:
  - Certificate role mapping implementation
  - Integration tests in `tests/security/test_rbac_engine.py`

### Task-3: Negative Test Implementation
- **Description**: Implement missing negative test cases
- **Dependencies**: Task-1 completion
- **Test Coverage**: 100% of edge cases
- **Deliverables**:
  - Negative test cases for RBAC edge cases in `tests/security/test_rbac_negative.py`
  - Negative TLS protocol validation tests
  - Test categories implemented:
    - Tampered OU claims
    - Certificate pinning failures
    - Role assignment boundary violations
    - Audit log tampering
    - Performance under attack
    - Missing authentication context
    - Invalid permission combinations
- **Verification Status**: Implemented (validation delegated to symphony-checker)

### Task-4: Audit Logging Integration
- **Description**: Implement RBAC operation audit logging
- **Dependencies**: Task-1 completion
- **Test Coverage**: 90% (Unit tests)
- **Deliverables**:
  - Audit log integration in `security/rbac_engine.py`
  - Log format specification document

## Quality Gates
1. All code must pass static analysis (mypy, pylint)
2. Minimum 90% test coverage for all modules
3. Security review required before deployment