C# AES 128加密，解密樣本

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        /// <summary>        /// AES加密        /// </summary>        /// <param name="clearTxt"></param>        /// <returns></returns>        public static string AesEncrypt(string clearTxt)        {            string secretKey = "I15TMSLO0KXUWTHO";            byte[] keyBytes = Encoding.UTF8.GetBytes(secretKey);            using (RijndaelManaged cipher = new RijndaelManaged())            {                cipher.Mode = CipherMode.CBC;                cipher.Padding = PaddingMode.PKCS7;                cipher.KeySize = 128;                cipher.BlockSize = 128;                cipher.Key = keyBytes;                cipher.IV = keyBytes;                byte[] valueBytes = Encoding.UTF8.GetBytes(clearTxt);                byte[] encrypted;                using (ICryptoTransform encryptor = cipher.CreateEncryptor())                {                    using (MemoryStream ms = new MemoryStream())                    {                        using (CryptoStream writer = new CryptoStream(ms, encryptor, CryptoStreamMode.Write))                        {                            writer.Write(valueBytes, 0, valueBytes.Length);                            writer.FlushFinalBlock();                            encrypted = ms.ToArray();                            StringBuilder sb = new StringBuilder();                            for (int i = 0; i < encrypted.Length; i++)                                sb.Append(Convert.ToString(encrypted[i], 16).PadLeft(2, ‘0‘));                            return sb.ToString().ToUpperInvariant();                        }                    }                }            }        }        /// <summary>        /// AES解密        /// </summary>        /// <param name="encrypted"></param>        /// <returns></returns>        public static string AesDecypt(string encrypted)        {            string secretKey = "I15TMSLO0KXUWTHO";            byte[] keyBytes = Encoding.UTF8.GetBytes(secretKey);            using (RijndaelManaged cipher = new RijndaelManaged())            {                cipher.Mode = CipherMode.CBC;                cipher.Padding = PaddingMode.PKCS7;                cipher.KeySize = 128;                cipher.BlockSize = 128;                cipher.Key = keyBytes;                cipher.IV = keyBytes;                List<byte> lstBytes = new List<byte>();                for (int i = 0; i < encrypted.Length; i += 2)                    lstBytes.Add(Convert.ToByte(encrypted.Substring(i, 2), 16));                using (ICryptoTransform decryptor = cipher.CreateDecryptor())                {                    using (MemoryStream msDecrypt = new MemoryStream(lstBytes.ToArray()))                    {                        using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))                        {                            using (StreamReader srDecrypt = new StreamReader(csDecrypt))                            {                                return srDecrypt.ReadToEnd();                            }                        }                    }                }            }        }

 

C# AES 128加密，解密樣本