C# AES加密解密示例：高效与安全性实践

using System.Security.Cryptography;//引入命名空间，加密 

    #region DES加密解密
        /// <summary>
        /// 默认密钥
        /// </summary>
        private static string sKey = "09@/*!^-";     //密钥，且必须为8位
        
        /// <summary>
        /// 进行DES加密
        /// </summary>
        /// <param name="pToEncrypt">要加密的字符串。</param>
        /// <returns>以Base64格式返回的加密字符串。</returns>
        public static string Encrypt(string pToEncrypt)
        {
            if (string.IsNullOrEmpty(pToEncrypt))
                return string.Empty;
            using (var aes = new AesCryptoServiceProvider())
            {
                byte[] inputByteArray = Encoding.UTF8.GetBytes(pToEncrypt);
                aes.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
                aes.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
                System.IO.MemoryStream ms = new System.IO.MemoryStream();
                using (CryptoStream cs = new CryptoStream(ms, aes.CreateEncryptor(), CryptoStreamMode.Write))
                {
                    cs.Write(inputByteArray, 0, inputByteArray.Length);
                    cs.FlushFinalBlock();
                    cs.Close();
                }
                string str = Convert.ToBase64String(ms.ToArray());