AES加密解密

 public class AESDE
    {
        public AESDE() { }

        #region AES-BAIDU
        
        /// <summary>
        /// AES加密
        /// </summary>
        /// <param name="encryptStr">明文</param>
        /// <param name="key">密钥</param>
        /// <returns></returns>

        public static string Encrypt( string encryptStr, string key )
        {

            byte[] keyArray = UTF8Encoding.UTF8.GetBytes( key );

            byte[] toEncryptArray = UTF8Encoding.UTF8.GetBytes( encryptStr );

            RijndaelManaged rDel = new RijndaelManaged();

            rDel.Key = keyArray;

            rDel.Mode = CipherMode.ECB;

            rDel.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = rDel.CreateEncryptor();

            byte[] resultArray = cTransform.TransformFinalBlock( toEncryptArray, 0, toEncryptArray.Length );

            return Convert.ToBase64String( resultArray, 0, resultArray.Length );

        }


        /// <summary>
        /// AES解密
        /// </summary>
        /// <param name="decryptStr">密文</param>
        /// <param name="key">密钥</param>
        /// <returns></returns>

        public static string Decrypt( string decryptStr, string key )
        {

            byte[] keyArray = UTF8Encoding.UTF8.GetBytes( key );

            byte[] toEncryptArray = Convert.FromBase64String( decryptStr );

            RijndaelManaged rDel = new RijndaelManaged();

            rDel.Key = keyArray;

            rDel.Mode = CipherMode.ECB;

            rDel.Padding = PaddingMode.PKCS7;

            ICryptoTransform cTransform = rDel.CreateDecryptor();

            byte[] resultArray = cTransform.TransformFinalBlock( toEncryptArray, 0, toEncryptArray.Length );

            return UTF8Encoding.UTF8.GetString( resultArray );

        }

        #endregion
    }

AES加密解密

原文：http://www.cnblogs.com/tonglei/p/4422854.html