C# AES对字符串进行加密

public class AESHelper
{
    
    /// <summary>
    /// AES加密的密钥 必须是32位
    /// </summary>
    public static string keyValue = "12345678123456781234567812345678";

    /// <summary>
    /// AES 算法加密
    /// </summary>
    /// <param name="content">明文</param>
    /// <param name="Key">密钥</param>
    /// <returns>加密后的密文</returns>
    public static string Encrypt(string content, string Key)
    {
    
        try
        {
    
            byte[] keyBytes = Encoding.UTF8.GetBytes(Key);

            RijndaelManaged rDel = new RijndaelManaged();

            rDel.Key = keyBytes;

            rDel.Mode = CipherMode.ECB;

            rDel.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = rDel.CreateEncryptor();

            byte[] contentBytes = Encoding.UTF8.GetBytes(content);

            byte[] resultBytes = cTransform.TransformFinalBlock(contentBytes, 0, contentBytes.Length);

            string result = Convert.ToBase64String(resultBytes, 0, resultBytes.Length);

            return result;
        }
        catch (Exception ex)
        {
    
            UnityEngine.Debug.LogError("加密出错：" + ex.ToString());

            return null;
        }
    }

    /// <summary>
    /// AES 算法解密
    /// </summary>
    /// <param name="content"></param>
    /// <param name="key"></param>
    /// <returns></returns>
    public static string Decipher(string content, string key)
    {
    
        try
        {
    
            byte[] keyBytes = Encoding.UTF8.GetBytes(key);

            RijndaelManaged rm = new RijndaelManaged();

            rm.Key = keyBytes;

            rm.Mode = CipherMode.ECB;

            rm.Padding = PaddingMode.PKCS7;

            ICryptoTransform ict = rm.CreateDecryptor();

            byte[] contentBytes = Convert.FromBase64String(content);

            byte[] resultBytes = ict.TransformFinalBlock(contentBytes, 0, contentBytes.Length);

            return Encoding.UTF8.GetString(resultBytes);
        }
        catch (Exception ex)
        {
    
            UnityEngine.Debug.LogError("解密出错：" + ex.ToString());

            return null;
        }
    }
}