74 lines
2.3 KiB
Python
74 lines
2.3 KiB
Python
from Crypto.Cipher import AES
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import json
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import binascii
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class ResponseDecryptor:
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def __init__(self, encryption_key):
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"""
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初始化解密器
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:param encryption_key: 十六进制格式的密钥字符串
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"""
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# 将十六进制字符串转换为字节
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self.key = binascii.unhexlify(encryption_key)
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def decrypt_response(self, encrypted_data):
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"""
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解密服务器响应的数据
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:param encrypted_data: 加密的数据字符串 (格式: "iv:encrypted")
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:return: 解密后的 JSON 数据
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"""
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try:
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# 分离 IV 和加密数据
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iv_hex, encrypted_text = encrypted_data.split(":")
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# 将十六进制转换为字节
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iv = binascii.unhexlify(iv_hex)
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encrypted_bytes = binascii.unhexlify(encrypted_text)
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# 创建解密器
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cipher = AES.new(self.key, AES.MODE_CBC, iv)
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# 解密数据
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decrypted_bytes = cipher.decrypt(encrypted_bytes)
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# 移除填充
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padding_length = decrypted_bytes[-1]
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decrypted_data = decrypted_bytes[:-padding_length]
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# 转换为字符串并解析 JSON
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decrypted_str = decrypted_data.decode("utf-8")
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return json.loads(decrypted_str)
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except Exception as e:
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raise Exception(f"解密失败: {str(e)}")
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# 使用示例
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def main():
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# 这里填入与服务器相同的加密密钥（十六进制格式）
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ENCRYPTION_KEY = "f1e2d3c4b5a6978899aabbccddeeff00112233445566778899aabbccddeeff00" # 替换为实际的密钥
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# 创建解密器实例
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decryptor = ResponseDecryptor(ENCRYPTION_KEY)
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# 模拟服务器响应
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server_response = {
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"encrypted_data": "iv_hex:encrypted_data_hex" # 这里是服务器返回的加密数据
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}
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try:
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# 解密数据
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decrypted_data = decryptor.decrypt_response(server_response["encrypted_data"])
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print("解密后的数据:", decrypted_data)
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# 现在可以访问解密后的数据
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if decrypted_data.get("success"):
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print("操作成功!")
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# 处理其他数据...
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else:
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print("操作失败:", decrypted_data.get("message"))
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except Exception as e:
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print("错误:", str(e))
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