c#之AES加密解密

.Net已封装好算法，直接调用即可，代码如下：

转载请注明出处：https://www.cnblogs.com/jietian331/p/9707771.html

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

 namespace AES
 {
     class Program
     {
         static void Main(string[] args)
         {
             string str = "Hello world";
             string key = "12345678876543211234567887654abc";
             string result = AesEncrypt(str, key);
             Console.WriteLine(result);
             Console.WriteLine(AesDecrypt(result, key));
             Console.ReadKey();
         }

         /// <summary>
         ///  AES 加密
         /// </summary>
         /// <param name="str">明文（待加密）</param>
         /// <param name="key">密文</param>
         /// <returns></returns>
         public static string AesEncrypt(string str, string key)
         {
             if (string.IsNullOrEmpty(str))
                 return null;
             Byte[] toEncryptArray = Encoding.UTF8.GetBytes(str);

             RijndaelManaged rm = new RijndaelManaged
             {
                 Key = Encoding.UTF8.GetBytes(key),
                 Mode = CipherMode.ECB,
                 Padding = PaddingMode.PKCS7
             };

             ICryptoTransform cTransform = rm.CreateEncryptor();
             Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, , toEncryptArray.Length);

             return Convert.ToBase64String(resultArray, , resultArray.Length);
         }
         /// <summary>
         ///  AES 解密
         /// </summary>
         /// <param name="str">明文（待解密）</param>
         /// <param name="key">密文</param>
         /// <returns></returns>
         public static string AesDecrypt(string str, string key)
         {
             if (string.IsNullOrEmpty(str))
                 return null;
             Byte[] toEncryptArray = Convert.FromBase64String(str);

             RijndaelManaged rm = new RijndaelManaged
             {
                 Key = Encoding.UTF8.GetBytes(key),
                 Mode = CipherMode.ECB,
                 Padding = PaddingMode.PKCS7
             };

             ICryptoTransform cTransform = rm.CreateDecryptor();
             Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, , toEncryptArray.Length);

             return Encoding.UTF8.GetString(resultArray);
         }
     }
 }