WingCloudServer/Tools/Flyinsono.DllEncryption/DllHelper.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Security.Cryptography;
using System.Text;

namespace Flyinsono.Client.Test
{
    public class DllHelper
    {
        public static void EncryptDllToBin(IList<string> dllFilePathList)
        {
            byte[] key = GetKey();
            foreach (var dllFilePath in dllFilePathList)
            {
                if (!File.Exists(dllFilePath))
                {
                    Logger.WriteLineInfo($"{dllFilePath} is not  exist");
                    continue;
                }
                Logger.WriteLineInfo($"{dllFilePath} start dllEncryption");
                // 读取 DLL 文件内容
                byte[] dllData = File.ReadAllBytes(dllFilePath);
                // 加密 DLL 数据
                byte[] encryptedData = EncryptData(dllData, key);
                string directoryPath = Path.GetDirectoryName(dllFilePath);
                var fileName = Path.GetFileNameWithoutExtension(dllFilePath);
                var binFilePath = Path.Combine(directoryPath, $"{fileName}.bin");
                var destinationFilePath = System.IO.Path.Combine(directoryPath, binFilePath);
                // 保存加密后的数据到二进制文件
                File.WriteAllBytes(destinationFilePath, encryptedData);
                Logger.WriteLineInfo($"{dllFilePath} save as {binFilePath}");
                //删除dll
                File.Delete(dllFilePath);
            }
            Logger.WriteLineInfo($"Dll Encryption Completed");
        }

        public static byte[] GetDllBytes(string binName)
        {
            byte[] encryptedData = File.ReadAllBytes(binName);
            byte[] key = GetKey();
            // 解密数据
            byte[] decryptedData = DecryptData(encryptedData, key);
            return decryptedData;
        }

        static byte[] EncryptData(byte[] data, byte[] key)
        {
            using (Aes aesAlg = Aes.Create())
            {
                aesAlg.Key = key;
                aesAlg.IV = new byte[16]; // 使用默认 IV
                // 创建加密器并加密数据
                ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);
                using (MemoryStream msEncrypt = new MemoryStream())
                {
                    using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
                    {
                        csEncrypt.Write(data, 0, data.Length);
                        csEncrypt.FlushFinalBlock();
                        return msEncrypt.ToArray();
                    }
                }
            }
        }

        static byte[] DecryptData(byte[] data, byte[] key)
        {
            using (Aes aesAlg = Aes.Create())
            {
                aesAlg.Key = key;
                aesAlg.IV = new byte[16]; // 使用默认 IV

                // 创建解密器并解密数据
                ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);
                using (MemoryStream msDecrypt = new MemoryStream(data))
                {
                    using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
                    {
                        using (MemoryStream msDecrypted = new MemoryStream())
                        {
                            csDecrypt.CopyTo(msDecrypted);
                            return msDecrypted.ToArray();
                        }
                    }
                }
            }
        }

        static byte[] GetKey()
        {
            //todo 读取配置
            string inputString = "vinno123";
            byte[] key = Encoding.UTF8.GetBytes(inputString);
            // 确保密钥长度符合 AES 要求
            Array.Resize(ref key, 32); // AES-256 使用 32 字节的密钥
            return key;
        }

    }
}