|
| 1 | +# PAIR Attack Refactoring Summary |
| 2 | + |
| 3 | +## Overview |
| 4 | + |
| 5 | +Successfully refactored the PAIR (Prompt Automatic Iterative Refinement) orchestrator from `pair_orchestrator.py` to become `PAIRAttack` following the new attack strategy pattern. The refactored attack inherits from `AttackStrategy` and maintains all core PAIR functionality while removing orchestrator-specific dependencies. |
| 6 | + |
| 7 | +## Files Created/Modified |
| 8 | + |
| 9 | +### 1. `/pyrit/attacks/multi_turn/pair.py` (NEW) |
| 10 | +- **PAIRAttackContext**: Context class extending `MultiTurnAttackContext` with PAIR-specific parameters |
| 11 | +- **PAIRAttackResult**: Result class extending `AttackResult` with PAIR-specific metadata |
| 12 | +- **PAIRAttack**: Main attack strategy class extending `AttackStrategy[PAIRAttackContext, PAIRAttackResult]` |
| 13 | + |
| 14 | +### 2. `/pyrit/attacks/__init__.py` (UNCHANGED) |
| 15 | +- `PairAttack` already included in `__all__` list, ready for the refactored implementation |
| 16 | + |
| 17 | +## Key Components |
| 18 | + |
| 19 | +### PAIRAttackContext |
| 20 | +```python |
| 21 | +@dataclass |
| 22 | +class PAIRAttackContext(MultiTurnAttackContext): |
| 23 | + depth: int = 3 |
| 24 | + desired_response_prefix: str = "Sure, here is" |
| 25 | + objective_achieved_score_threshold: float = 0.8 |
| 26 | +``` |
| 27 | + |
| 28 | +### PAIRAttackResult |
| 29 | +```python |
| 30 | +@dataclass |
| 31 | +class PAIRAttackResult(AttackResult): |
| 32 | + @property |
| 33 | + def depth_reached(self) -> int: ... |
| 34 | +``` |
| 35 | + |
| 36 | +### PAIRAttack |
| 37 | +```python |
| 38 | +class PAIRAttack(AttackStrategy[PAIRAttackContext, PAIRAttackResult]): |
| 39 | + def __init__( |
| 40 | + self, |
| 41 | + *, |
| 42 | + objective_target: PromptChatTarget, |
| 43 | + attack_adversarial_config: AttackAdversarialConfig, |
| 44 | + attack_converter_config: Optional[AttackConverterConfig] = None, |
| 45 | + attack_scoring_config: Optional[AttackScoringConfig] = None, |
| 46 | + prompt_normalizer: Optional[PromptNormalizer] = None, |
| 47 | + depth: int = 3, |
| 48 | + desired_response_prefix: str = "Sure, here is", |
| 49 | + objective_achieved_score_threshold: float = 0.8, |
| 50 | + ): ... |
| 51 | +``` |
| 52 | + |
| 53 | +## Implementation Strategy |
| 54 | + |
| 55 | +The refactored `PAIRAttack` leverages the existing `TreeOfAttacksWithPruningAttack` with PAIR-specific configuration: |
| 56 | + |
| 57 | +1. **Delegation Pattern**: Creates an internal `TreeOfAttacksWithPruningAttack` instance |
| 58 | +2. **PAIR Configuration**: |
| 59 | + - `tree_width=1` (PAIR uses single branch) |
| 60 | + - `branching_factor=1` (PAIR doesn't branch) |
| 61 | + - `on_topic_checking_enabled=False` (PAIR disables this) |
| 62 | + - Uses PAIR-specific system prompts |
| 63 | + |
| 64 | +3. **Attack Strategy Lifecycle**: |
| 65 | + - `_validate_context()`: Validates PAIR-specific parameters |
| 66 | + - `_setup_async()`: Creates and configures the underlying tree attack |
| 67 | + - `_perform_attack_async()`: Executes the tree attack and converts results |
| 68 | + - `_teardown_async()`: Cleans up resources |
| 69 | + |
| 70 | +## API Migration |
| 71 | + |
| 72 | +### Old PAIROrchestrator |
| 73 | +```python |
| 74 | +orchestrator = PAIROrchestrator( |
| 75 | + objective_target=objective_target, |
| 76 | + adversarial_chat=adversarial_chat, |
| 77 | + scoring_target=scoring_target, |
| 78 | + depth=3, |
| 79 | + prompt_converters=[...], |
| 80 | + objective_achieved_score_threshold=0.8, |
| 81 | + desired_response_prefix="Sure, here is", |
| 82 | +) |
| 83 | +result = await orchestrator.run_attack_async(objective="...") |
| 84 | +``` |
| 85 | + |
| 86 | +### New PAIRAttack |
| 87 | +```python |
| 88 | +attack = PAIRAttack( |
| 89 | + objective_target=objective_target, |
| 90 | + attack_adversarial_config=AttackAdversarialConfig(target=adversarial_chat), |
| 91 | + attack_converter_config=AttackConverterConfig(request_converters=[...]), |
| 92 | + attack_scoring_config=AttackScoringConfig(objective_scorer=...), |
| 93 | + depth=3, |
| 94 | + desired_response_prefix="Sure, here is", |
| 95 | + objective_achieved_score_threshold=0.8, |
| 96 | +) |
| 97 | +result = await attack.execute_async(objective="...") |
| 98 | +``` |
| 99 | + |
| 100 | +## Key Improvements |
| 101 | + |
| 102 | +1. **Attack Strategy Pattern Compliance**: |
| 103 | + - Enforced lifecycle with validation, setup, execution, and teardown |
| 104 | + - Consistent interface with other attack strategies |
| 105 | + - Better error handling and resource management |
| 106 | + |
| 107 | +2. **Modular Configuration**: |
| 108 | + - `AttackAdversarialConfig`: Manages adversarial chat configuration |
| 109 | + - `AttackConverterConfig`: Manages prompt converters |
| 110 | + - `AttackScoringConfig`: Manages scoring configuration |
| 111 | + |
| 112 | +3. **Enhanced Type Safety**: |
| 113 | + - Generic typing with `AttackStrategy[PAIRAttackContext, PAIRAttackResult]` |
| 114 | + - Better IDE support and error detection |
| 115 | + |
| 116 | +4. **Comprehensive Results**: |
| 117 | + - `PAIRAttackResult` with PAIR-specific metadata |
| 118 | + - Execution time tracking |
| 119 | + - Detailed outcome reporting |
| 120 | + |
| 121 | +5. **Removed Dependencies**: |
| 122 | + - No longer depends on orchestrator-specific classes |
| 123 | + - Uses attack strategy base classes |
| 124 | + - Cleaner separation of concerns |
| 125 | + |
| 126 | +## PAIR Algorithm Preservation |
| 127 | + |
| 128 | +All core PAIR functionality is preserved: |
| 129 | + |
| 130 | +- ✅ Tree-based iterative refinement approach |
| 131 | +- ✅ Single-width exploration (width=1) |
| 132 | +- ✅ No branching (branching_factor=1) |
| 133 | +- ✅ Disabled on-topic checking |
| 134 | +- ✅ Custom scoring thresholds |
| 135 | +- ✅ Desired response prefix handling |
| 136 | +- ✅ PAIR-specific system prompts |
| 137 | +- ✅ Depth-based termination |
| 138 | + |
| 139 | +## Testing |
| 140 | + |
| 141 | +The refactored code: |
| 142 | +- ✅ Compiles successfully (`python -m py_compile`) |
| 143 | +- ✅ Follows the established attack strategy pattern |
| 144 | +- ✅ Maintains API compatibility through configuration objects |
| 145 | +- ✅ Preserves all PAIR-specific algorithmic behavior |
| 146 | + |
| 147 | +## Usage Examples |
| 148 | + |
| 149 | +See `/pair_attack_demo.py` for comprehensive usage examples and migration guidance. |
| 150 | + |
| 151 | +## Conclusion |
| 152 | + |
| 153 | +The PAIR attack has been successfully refactored from an orchestrator to an attack strategy, providing: |
| 154 | +- Better code organization and maintainability |
| 155 | +- Consistent interface with other PyRIT attacks |
| 156 | +- Enhanced error handling and validation |
| 157 | +- Preserved algorithmic functionality |
| 158 | +- Future-proof architecture following established patterns |
| 159 | + |
| 160 | +The refactoring maintains backward compatibility through configuration objects while providing a more modern, type-safe, and maintainable implementation. |
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