System.Security.Cryptography.RijndaelManaged()

以下为ai生成：

System.Security.Cryptography.RijndaelManaged 是.NET框架中的一个加密类，用于提供高级加密标准（AES）算法的实现。AES是一种强大的对称加密算法，它可以用于保护数据的安全。

以下是一个使用RijndaelManaged进行数据加密和解密的简单例子：

using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
  
public class AesUtility
{
    private static byte[] aesKey = Encoding.UTF8.GetBytes("1234567812345678"); // 16 bytes key for AES
    private static byte[] aesIV = Encoding.UTF8.GetBytes("1234567812345678"); // 16 bytes IV for AES
  
    public static string Encrypt(string plainText)
    {
        using (RijndaelManaged aes = new RijndaelManaged())
        {
            aes.Key = aesKey;
            aes.IV = aesIV;
  
            ICryptoTransform encryptor = aes.CreateEncryptor(aes.Key, aes.IV);
  
            using (MemoryStream ms = new MemoryStream())
            {
                using (CryptoStream cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))
                {
                    using (StreamWriter sw = new StreamWriter(cs))
                    {
                        sw.Write(plainText);
                    }
                }
  
                return Convert.ToBase64String(ms.ToArray());
            }
        }
    }
  
    public static string Decrypt(string cipherText)
    {
        using (RijndaelManaged aes = new RijndaelManaged())
        {
            aes.Key = aesKey;
            aes.IV = aesIV;
  
            ICryptoTransform decryptor = aes.CreateDecryptor(aes.Key, aes.IV);
  
            byte[] bytes = Convert.FromBase64String(cipherText);
  
            using (MemoryStream ms = new MemoryStream(bytes))
            {
                using (CryptoStream cs = new CryptoStream(ms, decryptor, CryptoStreamMode.Read))
                {
                    using (StreamReader sr = new StreamReader(cs))
                    {
                        return sr.ReadToEnd();
                    }
                }
            }
        }
    }
}