private void bVerify_Click(object sender, EventArgs e)
        {
            UpdatePackageInfo desc;
            string            hashbase64;

            AppendLog("Verifying Signature");
            eVerDescriptionFile.Text = dlgSelectUpdateDescFile.FileName;

            try
            {
                desc = UpdatePackageInfo.FromFile(dlgSelectUpdateDescFile.FileName, _PrivateKey.ToXmlString(false));

                if (desc != null)
                {
                    AppendLog("OK - xml signature is ok");
                    iXmlSignature.Text       = "Xml signature is OK";
                    iXmlSignature.ImageIndex = 10;
                }
                else
                {
                    AppendLog("ERROR - xml signature missmatch");
                    iXmlSignature.Text              = "Xml signature is NOT OK";
                    iXmlSignature.ImageIndex        = 11;
                    iUpdateFileSignature.Text       = "Not tested";
                    iUpdateFileSignature.ImageIndex = 9;
                    return;
                }


                if (!UpdatePackageInfoHelper.CreateSHA512HashForFile(eVerUpdateFile.Text, out hashbase64))
                {
                    AppendLog("Could not create hash for updatefile - only verifying xml!");
                    iUpdateFileSignature.Text       = "Cannot be tested (file error)";
                    iUpdateFileSignature.ImageIndex = 9;
                }
                else
                {
                    if (desc.UpdateFileSignature == hashbase64)
                    {
                        AppendLog("Hash is OK");
                        iUpdateFileSignature.Text       = "Update file signatures match";
                        iUpdateFileSignature.ImageIndex = 10;
                    }
                    else
                    {
                        AppendLog("Hash is NOT OK");
                        iUpdateFileSignature.Text       = "Update file signatures DO NOT match";
                        iUpdateFileSignature.ImageIndex = 11;
                    }
                }
            }
            catch
            { AppendLog("Error verifying signature"); }
        }
 private void iOpen_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
 {
     if (dlgSelectUpdateDescFile.ShowDialog() == System.Windows.Forms.DialogResult.OK)
     {
         eVerDescriptionFile.Text = dlgSelectUpdateDescFile.FileName;
         UpdatePackageInfo desc = UpdatePackageInfo.FromFile(dlgSelectUpdateDescFile.FileName);
         if (desc != null)
         {
             eTitle.Text            = desc.Title;
             eDescription.Text      = desc.Description;
             eReleaseLink.Text      = desc.ReleaseNotesUri;
             ePublishDate.EditValue = desc.PublishDate;
             eNewVersion.Text       = desc.Version;
             eUpdateFile.Text       = "";
         }
     }
 }