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easyjailbreak/attacker/CodeChameleon_2024.py

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+"""
+CodeChameleon Class
+============================================
+A novel framework for jailbreaking in LLMs based on
+personalized encryption and decryption.
+
+Paper title: CodeChameleon: Personalized Encryption Framework for Jailbreaking Large Language Models
+arXiv Link: https://arxiv.org/abs/2402.16717
+"""
+import json
+import logging
+logging.basicConfig(level=logging.INFO)
+from easyjailbreak.metrics.Evaluator import EvaluatorGenerativeJudge
+from easyjailbreak.attacker import AttackerBase
+from easyjailbreak.datasets import JailbreakDataset, Instance
+from easyjailbreak.mutation.rule import *
+
+from tqdm import tqdm
+
+__all__ = ['CodeChameleon']
+
+class CodeChameleon(AttackerBase):
+    r"""
+    Implementation of CodeChameleon Jailbreak Challenges in Large Language Models
+    """
+    def __init__(self, attack_model, target_model, eval_model, jailbreak_datasets: JailbreakDataset, save_path, dataset_name):
+        r"""
+        :param attack_model: The attack_model is used to generate the adversarial prompt. In this case, the attack_model should be set as None.
+        :param target_model: The target language model to be attacked.
+        :param eval_model: The evaluation model to evaluate the attack results.
+        :param jailbreak_datasets: The dataset to be attacked.
+        :param template_file: The file path of the template.
+        """
+        super().__init__(attack_model, target_model, eval_model, jailbreak_datasets)
+        self.mutations = [
+            BinaryTree(attr_name='query'),
+            Length(attr_name='query'),
+            Reverse(attr_name='query'),
+            OddEven(attr_name='query'),
+        ]
+        self.evaluator = EvaluatorGenerativeJudge(eval_model)
+        self.current_jailbreak = 0
+        self.current_query = 0
+        self.current_reject = 0
+
+        self.save_path = save_path
+        self.dataset_name = dataset_name
+
+    def single_attack(self, instance: Instance) -> JailbreakDataset:
+        r"""
+        single attack process using provided prompts and mutation methods.
+
+        :param instance: The Instance that is attacked.
+        """
+        instance_ds = JailbreakDataset([instance])
+        source_instance_list = []
+        updated_instance_list = []
+
+        for mutation in self.mutations:
+            transformed_jailbreak_datasets = mutation(instance_ds)
+            for item in transformed_jailbreak_datasets:
+                source_instance_list.append(item)
+
+        for instance in source_instance_list:
+            answer = self.target_model.generate(instance.jailbreak_prompt.format(decryption_function = instance.decryption_function, query = instance.query))
+            instance.target_responses.append(answer)
+            updated_instance_list.append(instance)
+        return JailbreakDataset(updated_instance_list)
+
+    def attack(self):
+        r"""
+        Execute the attack process using provided prompts and mutations.
+        """
+        logging.info("Jailbreak started!")
+        self.attack_results = JailbreakDataset([])
+        try:
+            with open(self.save_path, 'w') as f:
+
+                for Instance in tqdm(self.jailbreak_datasets):
+                    if self.dataset_name == 'trustllm':
+                        self.target_model.set_system_message(Instance.system_message)
+
+                    results = self.single_attack(Instance)
+                    for new_instance in results:
+                        self.attack_results.add(new_instance)
+
+                        line = new_instance.to_dict()
+                        f.write(json.dumps(line, ensure_ascii=False) + '\n')
+
+        except KeyboardInterrupt:
+            logging.info("Jailbreak interrupted by user!")
+
+        # self.evaluator(self.attack_results)
+        # self.update(self.attack_results)
+        logging.info("Jailbreak finished!")
+
+    def update(self, Dataset: JailbreakDataset):
+        r"""
+        Update the state of the Jailbroken based on the evaluation results of Datasets.
+        
+        :param Dataset: The Dataset that is attacked.
+        """
+        for prompt_node in Dataset:
+            self.current_jailbreak += prompt_node.num_jailbreak
+            self.current_query += prompt_node.num_query
+            self.current_reject += prompt_node.num_reject
+
+    def log(self):
+        r"""
+        Report the attack results.
+        """
+        logging.info("======Jailbreak report:======")
+        logging.info(f"Total queries: {self.current_query}")
+        logging.info(f"Total jailbreak: {self.current_jailbreak}")
+        logging.info(f"Total reject: {self.current_reject}")
+        logging.info("========Report End===========")