在输出C#之前对XML中包含的字符串进行解密

using System;
using System.Security.Cryptography;
using System.Text;
using System.Xml;

public class XmlDecryptor
{
    public static string DecryptStringFromXml(string xmlFilePath, string key)
    {
        XmlDocument xmlDoc = new XmlDocument();
        xmlDoc.Load(xmlFilePath);

        XmlNode encryptedNode = xmlDoc.SelectSingleNode("//EncryptedString");
        string encryptedString = encryptedNode.InnerText;

        byte[] encryptedBytes = Convert.FromBase64String(encryptedString);

        using (Aes aes = Aes.Create())
        {
            aes.Key = Encoding.UTF8.GetBytes(key);
            aes.IV = new byte[16]; // 设置初始化向量

            ICryptoTransform decryptor = aes.CreateDecryptor(aes.Key, aes.IV);

            using (var decryptedStream = new MemoryStream())
            {
                using (var cryptoStream = new CryptoStream(decryptedStream, decryptor, CryptoStreamMode.Write))
                {
                    cryptoStream.Write(encryptedBytes, 0, encryptedBytes.Length);
                    cryptoStream.FlushFinalBlock();
                }

                byte[] decryptedBytes = decryptedStream.ToArray();
                string decryptedString = Encoding.UTF8.GetString(decryptedBytes);

                return decryptedString;
            }
        }
    }
}

// 示例用法
string xmlFilePath = "path/to/encrypted.xml";
string key = "your-encryption-key";

string decryptedString = XmlDecryptor.DecryptStringFromXml(xmlFilePath, key);
Console.WriteLine(decryptedString);