motor-debug/Welling_Motor_Debug_Tool/aes.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Security.Cryptography;
using System.IO;

namespace Welling_Motor_Debug_Tool
{
    internal class aes
    {
        // 加密函数
        public static void EncryptToFile(string plainText, string filePath, string key, string iv)
        {
            using (Aes aesAlg = Aes.Create())
            {
                aesAlg.Key = Encoding.UTF8.GetBytes(key);  // 密钥（必须是 16、24 或 32 字节）
                aesAlg.IV = Encoding.UTF8.GetBytes(iv);    // 初始化向量（IV，必须是 16 字节）

                using (FileStream fsEncrypt = new FileStream(filePath, FileMode.Create))
                using (CryptoStream csEncrypt = new CryptoStream(fsEncrypt, aesAlg.CreateEncryptor(), CryptoStreamMode.Write))
                using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
                {
                    swEncrypt.Write(plainText);
                }
            }
        }

        // 解密函数
        public static string DecryptFromFile(string filePath, string key, string iv)
        {
            using (Aes aesAlg = Aes.Create())
            {
                aesAlg.Key = Encoding.UTF8.GetBytes(key);  // 密钥（必须是 16、24 或 32 字节）
                aesAlg.IV = Encoding.UTF8.GetBytes(iv);    // 初始化向量（IV，必须是 16 字节）

                using (FileStream fsDecrypt = new FileStream(filePath, FileMode.Open))
                using (CryptoStream csDecrypt = new CryptoStream(fsDecrypt, aesAlg.CreateDecryptor(), CryptoStreamMode.Read))
                using (StreamReader srDecrypt = new StreamReader(csDecrypt))
                {
                    return srDecrypt.ReadToEnd();
                }
            }
        }
    }
}