/// <summary>
/// 解密
/// </summary>
/// <param name="KeyPath"></param>
/// <param name="data"></param>
/// <returns></returns>
public byte[] DecryptVideo(string KeyPath, byte[] data)
{
Rijndael rij = new Rijndael();
RijndaelKey rijKey = rij.GetKeyAndIV(KeyPath);
return(rij.Decrypt(data, rijKey.key, rijKey.IV));
}