public byte[] DecryptStream(byte[] photo, string key)
{
string temp = Convert.ToBase64String(photo);
return(Convert.FromBase64String(SecurityUtil.SymmetricDecrypt(temp, key)));
}
public byte[] EncryptStream(byte[] photo, string key)
{
string temp = SecurityUtil.SymmetricEncrypt(Convert.ToBase64String(photo), key);
return(Convert.FromBase64String(temp));
}