Signature plugin: invisible digital signature

Pdf4QtLib/sources/pdfdocumentbuilder.cpp

@@ -4567,6 +4567,37 @@ PDFObjectReference PDFDocumentBuilder::createFormFieldSignature(QString fieldNam
 }
 
 
+void PDFDocumentBuilder::createInvisibleFormFieldWidget(PDFObjectReference formField,
+                                                        PDFObjectReference page)
+{
+    PDFObjectFactory objectBuilder;
+
+    objectBuilder.beginDictionary();
+    objectBuilder.beginDictionaryItem("P");
+    objectBuilder << page;
+    objectBuilder.endDictionaryItem();
+    objectBuilder.beginDictionaryItem("Rect");
+    objectBuilder << std::array{ 0.0, 0.0, 0.0, 0.0 };
+    objectBuilder.endDictionaryItem();
+    objectBuilder.beginDictionaryItem("Subtype");
+    objectBuilder << WrapName("Widget");
+    objectBuilder.endDictionaryItem();
+    objectBuilder.beginDictionaryItem("Type");
+    objectBuilder << WrapName("Annot");
+    objectBuilder.endDictionaryItem();
+    objectBuilder.endDictionary();
+    PDFObject widgetObject = objectBuilder.takeObject();
+    objectBuilder.beginDictionary();
+    objectBuilder.beginDictionaryItem("Annots");
+    objectBuilder << std::array{ formField };
+    objectBuilder.endDictionaryItem();
+    objectBuilder.endDictionary();
+    PDFObject pageObject = objectBuilder.takeObject();
+    mergeTo(formField, widgetObject);
+    appendTo(page, pageObject);
+}
+
+
 PDFObjectReference PDFDocumentBuilder::createSignatureDictionary(QByteArray filter,
                                                                  QByteArray subfilter,
                                                                  QByteArray contents,
@@ -4589,7 +4620,7 @@ PDFObjectReference PDFDocumentBuilder::createSignatureDictionary(QByteArray filt
     objectBuilder << std::array{ byteRangeItem, byteRangeItem, byteRangeItem, byteRangeItem };
     objectBuilder.endDictionaryItem();
     objectBuilder.beginDictionaryItem("Contents");
-    objectBuilder << contents;
+    objectBuilder << WrapString(contents);
     objectBuilder.endDictionaryItem();
     objectBuilder.beginDictionaryItem("M");
     objectBuilder << signingTime;
@@ -5100,14 +5131,6 @@ void PDFDocumentBuilder::setFormFieldValue(PDFObjectReference formField,
 }
 
 
-void PDFDocumentBuilder::setLanguage(QLocale locale)
-{
-    PDFObjectFactory objectBuilder;
-
-    setLanguage(locale.name());
-}
-
-
 void PDFDocumentBuilder::setLanguage(QString language)
 {
     PDFObjectFactory objectBuilder;
@@ -5122,6 +5145,14 @@ void PDFDocumentBuilder::setLanguage(QString language)
 }
 
 
+void PDFDocumentBuilder::setLanguage(QLocale locale)
+{
+    PDFObjectFactory objectBuilder;
+
+    setLanguage(locale.name());
+}
+
+
 void PDFDocumentBuilder::setOutline(PDFObjectReference outline)
 {
     PDFObjectFactory objectBuilder;
@@ -5256,6 +5287,36 @@ void PDFDocumentBuilder::setPageUserUnit(PDFObjectReference page,
 }
 
 
+void PDFDocumentBuilder::setSignatureContactInfo(PDFObjectReference signatureDictionary,
+                                                 QString contactInfoText)
+{
+    PDFObjectFactory objectBuilder;
+
+    objectBuilder.beginDictionary();
+    objectBuilder.beginDictionaryItem("ContactInfo");
+    objectBuilder << contactInfoText;
+    objectBuilder.endDictionaryItem();
+    objectBuilder.endDictionary();
+    PDFObject updatedSignatureDictionary = objectBuilder.takeObject();
+    mergeTo(signatureDictionary, updatedSignatureDictionary);
+}
+
+
+void PDFDocumentBuilder::setSignatureReason(PDFObjectReference signatureDictionary,
+                                            QString reasonText)
+{
+    PDFObjectFactory objectBuilder;
+
+    objectBuilder.beginDictionary();
+    objectBuilder.beginDictionaryItem("Reason");
+    objectBuilder << reasonText;
+    objectBuilder.endDictionaryItem();
+    objectBuilder.endDictionary();
+    PDFObject updatedSignatureDictionary = objectBuilder.takeObject();
+    mergeTo(signatureDictionary, updatedSignatureDictionary);
+}
+
+
 void PDFDocumentBuilder::updateTrailerDictionary(PDFInteger objectCount)
 {
     PDFObjectFactory objectBuilder;

Pdf4QtLib/sources/pdfdocumentbuilder.h

@@ -1235,6 +1235,13 @@ public:
                                                 PDFObjectReference signatureValue);
 
 
+    /// 
+    /// \param formField Form field reference
+    /// \param page Page reference
+    void createInvisibleFormFieldWidget(PDFObjectReference formField,
+                                        PDFObjectReference page);
+
+
     /// Creates signature dictionary used for preparation in signing process. Can define parameters of the 
     /// signature.
     /// \param filter Filter (for example, Adobe.PPKLite, Entrust.PPKEF, CiCi.SignIt, ...)
@@ -1450,11 +1457,6 @@ public:
                            PDFObject value);
 
 
-    /// Set document language.
-    /// \param locale Locale, from which is language determined
-    void setLanguage(QLocale locale);
-
-
     /// Set document language.
     /// \param language Document language. It should be a language identifier, as defined in ISO 639 
     ///        and ISO 3166. For example, "en-US", where first two letter means language code (en = 
@@ -1462,6 +1464,11 @@ public:
     void setLanguage(QString language);
 
 
+    /// Set document language.
+    /// \param locale Locale, from which is language determined
+    void setLanguage(QLocale locale);
+
+
     /// Set document outline.
     /// \param outline Document outline root
     void setOutline(PDFObjectReference outline);
@@ -1527,6 +1534,20 @@ public:
                          PDFReal unit);
 
 
+    /// Sets signature contact info field.
+    /// \param signatureDictionary Signature dictionary reference
+    /// \param contactInfoText Contact info text
+    void setSignatureContactInfo(PDFObjectReference signatureDictionary,
+                                 QString contactInfoText);
+
+
+    /// Sets signature reason field.
+    /// \param signatureDictionary Signature dictionary reference
+    /// \param reasonText Reason text
+    void setSignatureReason(PDFObjectReference signatureDictionary,
+                            QString reasonText);
+
+
     /// This function is used to update trailer dictionary. Must be called each time the final document is 
     /// being built.
     /// \param objectCount Number of objects (including empty ones)

Pdf4QtViewerPlugins/SignaturePlugin/signatureplugin.cpp

@@ -29,6 +29,7 @@
 #include <QToolButton>
 #include <QMainWindow>
 #include <QMessageBox>
+#include <QFileDialog>
 
 namespace pdfplugin
 {
@@ -334,15 +335,39 @@ void SignaturePlugin::onSignDigitally()
             return;
         }
 
+        QString signatureName = QString("pdf4qt_signature_%1").arg(QString::number(QDateTime::currentMSecsSinceEpoch()));
+
         pdf::PDFInteger offsetMark = 123456789123;
         constexpr const char* offsetMarkString = "123456789123";
         const auto offsetMarkStringLength = std::strlen(offsetMarkString);
 
         pdf::PDFDocumentBuilder builder(m_document);
         pdf::PDFObjectReference signatureDictionary = builder.createSignatureDictionary("Adobe.PPKLite", "adbe.pkcs7.detached", signature, QDateTime::currentDateTime(), offsetMark);
-        pdf::PDFObjectReference formField = builder.createFormFieldSignature("signature", { }, signatureDictionary);
+        pdf::PDFObjectReference formField = builder.createFormFieldSignature(signatureName, { }, signatureDictionary);
         builder.createAcroForm({ formField });
 
+        if (dialog.getSignMethod() == SignDialog::SignDigitallyInvisible)
+        {
+            const pdf::PDFCatalog* catalog = m_document->getCatalog();
+            if (catalog->getPageCount() > 0)
+            {
+                const pdf::PDFObjectReference pageReference = catalog->getPage(0)->getPageReference();
+                builder.createInvisibleFormFieldWidget(formField, pageReference);
+            }
+        }
+
+        QString reasonText = dialog.getReasonText();
+        if (!reasonText.isEmpty())
+        {
+            builder.setSignatureReason(signatureDictionary, reasonText);
+        }
+
+        QString contactInfoText = dialog.getContactInfoText();
+        if (!contactInfoText.isEmpty())
+        {
+            builder.setSignatureContactInfo(signatureDictionary, contactInfoText);
+        }
+
         pdf::PDFDocument signedDocument = builder.build();
 
         // 1) Save the document with incorrect signature
@@ -361,8 +386,8 @@ void SignaturePlugin::onSignDigitally()
 
         // 2) Write ranges to be checked
         const pdf::PDFInteger i1 = 0;
-        const pdf::PDFInteger i2 = indexOfSignature;
+        const pdf::PDFInteger i2 = indexOfSignature - 1;
-        const pdf::PDFInteger i3 = i2 + signature.size() * 2;
+        const pdf::PDFInteger i3 = i2 + signature.size() * 2 + 2;
         const pdf::PDFInteger i4 = buffer.data().size() - i3;
 
         auto writeInt = [&](pdf::PDFInteger offset)
@@ -393,13 +418,31 @@ void SignaturePlugin::onSignDigitally()
             return;
         }
 
-        buffer.seek(i2);
+        buffer.seek(i2 + 1);
         buffer.write(signature.toHex());
 
         buffer.close();
+
+        QString fileName = QFileDialog::getSaveFileName(m_dataExchangeInterface->getMainWindow(), tr("Save Signed Document"), getSignedFileName(), tr("Portable Document (*.pdf);;All files (*.*)"));
+        if (!fileName.isEmpty())
+        {
+            QFile signedFile(fileName);
+            if (signedFile.open(QFile::WriteOnly | QFile::Truncate))
+            {
+                signedFile.write(buffer.data());
+                signedFile.close();
+            }
+        }
     }
 }
 
+QString SignaturePlugin::getSignedFileName() const
+{
+    QFileInfo fileInfo(m_dataExchangeInterface->getOriginalFileName());
+
+    return fileInfo.path() + "/" + fileInfo.baseName() + "_SIGNED.pdf";
+}
+
 void SignaturePlugin::onOpenCertificatesManager()
 {
     CertificateManagerDialog dialog(m_dataExchangeInterface->getMainWindow());

Pdf4QtViewerPlugins/SignaturePlugin/signatureplugin.h

@@ -112,6 +112,8 @@ private:
     void updateGraphics();
     void updateDockWidget();
 
+    QString getSignedFileName() const;
+
     std::array<QAction*, LastAction> m_actions;
     std::array<pdf::PDFWidgetTool*, LastTool> m_tools;
     pdf::PDFPageContentEditorWidget* m_editorWidget;

Pdf4QtViewerPlugins/SignaturePlugin/signdialog.cpp

@@ -68,6 +68,16 @@ QString SignDialog::getPassword() const
     return ui->certificatePasswordEdit->text();
 }
 
+QString SignDialog::getReasonText() const
+{
+    return ui->reasonEdit->text();
+}
+
+QString SignDialog::getContactInfoText() const
+{
+    return ui->contactInfoEdit->text();
+}
+
 void SignDialog::accept()
 {
     // Check certificate

Pdf4QtViewerPlugins/SignaturePlugin/signdialog.h

@@ -47,6 +47,8 @@ public:
     SignMethod getSignMethod() const;
     QString getCertificatePath() const;
     QString getPassword() const;
+    QString getReasonText() const;
+    QString getContactInfoText() const;
 
 private:
     Ui::SignDialog* ui;

generated_code_definition.xml

@@ -103,7 +103,7 @@
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(getPageTreeRoot(), updatedTreeRoot);
+          <property name="code">appendTo(getPageTreeRoot(), updatedTreeRoot);&#xd;
 return pageReference;</property>
         </QObject>
       </property>
@@ -182,7 +182,7 @@ return pageReference;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">setCatalogAcroForm(acroForm);
+          <property name="code">setCatalogAcroForm(acroForm);&#xd;
 return acroForm;</property>
         </QObject>
       </property>
@@ -2386,8 +2386,8 @@ return acroForm;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -2610,8 +2610,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -2785,8 +2785,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationReference);
+updateAnnotationAppearanceStreams(annotationReference);&#xd;
 return annotationReference;</property>
         </QObject>
       </property>
@@ -3067,8 +3067,8 @@ return annotationReference;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -3270,8 +3270,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -3545,8 +3545,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -3749,8 +3749,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -3904,8 +3904,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -4044,8 +4044,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -4269,8 +4269,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -4486,8 +4486,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -4768,8 +4768,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -5120,8 +5120,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -5321,8 +5321,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationReference);
+updateAnnotationAppearanceStreams(annotationReference);&#xd;
 return annotationReference;</property>
         </QObject>
       </property>
@@ -5552,8 +5552,8 @@ return annotationReference;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -5812,8 +5812,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -5951,8 +5951,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">mergeTo(parentAnnotation, upgradedParentAnnotation);
+          <property name="code">mergeTo(parentAnnotation, upgradedParentAnnotation);&#xd;
-updateAnnotationAppearanceStreams(popupAnnotation);
+updateAnnotationAppearanceStreams(popupAnnotation);&#xd;
 return popupAnnotation;</property>
         </QObject>
       </property>
@@ -6106,8 +6106,8 @@ return popupAnnotation;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -6246,8 +6246,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -6470,8 +6470,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -6625,8 +6625,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -6765,8 +6765,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -6969,8 +6969,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -7158,8 +7158,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -7362,8 +7362,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -7517,8 +7517,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -7657,8 +7657,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -7899,9 +7899,9 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">mergeTo(annotationObject, updateAnnotationPopup);
+          <property name="code">mergeTo(annotationObject, updateAnnotationPopup);&#xd;
-appendTo(page, pageAnnots);
+appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -8055,8 +8055,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -8195,8 +8195,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -8399,8 +8399,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">appendTo(page, pageAnnots);
+          <property name="code">appendTo(page, pageAnnots);&#xd;
-updateAnnotationAppearanceStreams(annotationObject);
+updateAnnotationAppearanceStreams(annotationObject);&#xd;
 return annotationObject;</property>
         </QObject>
       </property>
@@ -8716,8 +8716,8 @@ return annotationObject;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">mergeTo(rootNodeReference, updatedRootNode);
+          <property name="code">mergeTo(rootNodeReference, updatedRootNode);&#xd;
-mergeTo(getCatalogReference(), updatedCatalog);
+mergeTo(getCatalogReference(), updatedCatalog);&#xd;
 return rootNodeReference;</property>
         </QObject>
       </property>
@@ -8946,6 +8946,116 @@ return rootNodeReference;</property>
       <property name="functionDescription">Creates form field of type signature.</property>
       <property name="returnType">_PDFObjectReference</property>
     </QObject>
+    <QObject class="codegen::GeneratedFunction">
+      <property name="objectName"></property>
+      <property name="items">
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">formField</property>
+              <property name="parameterType">_PDFObjectReference</property>
+              <property name="parameterDescription">Form field reference</property>
+            </QObject>
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">page</property>
+              <property name="parameterType">_PDFObjectReference</property>
+              <property name="parameterDescription">Page reference</property>
+            </QObject>
+          </property>
+          <property name="actionType">Parameters</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedPDFObject">
+              <property name="objectName"></property>
+              <property name="items">
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">P</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">page</property>
+                </QObject>
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">Rect</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">std::array{ 0.0, 0.0, 0.0, 0.0 }</property>
+                </QObject>
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">Subtype</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">WrapName("Widget")</property>
+                </QObject>
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">Type</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">WrapName("Annot")</property>
+                </QObject>
+              </property>
+              <property name="dictionaryItemName"></property>
+              <property name="objectType">Dictionary</property>
+              <property name="value"></property>
+            </QObject>
+          </property>
+          <property name="actionType">CreateObject</property>
+          <property name="variableName">widgetObject</property>
+          <property name="variableType">_PDFObject</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedPDFObject">
+              <property name="objectName"></property>
+              <property name="items">
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">Annots</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">std::array{ formField }</property>
+                </QObject>
+              </property>
+              <property name="dictionaryItemName"></property>
+              <property name="objectType">Dictionary</property>
+              <property name="value"></property>
+            </QObject>
+          </property>
+          <property name="actionType">CreateObject</property>
+          <property name="variableName">pageObject</property>
+          <property name="variableType">_PDFObject</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items"/>
+          <property name="actionType">Code</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code">mergeTo(formField, widgetObject);
+appendTo(page, pageObject);</property>
+        </QObject>
+      </property>
+      <property name="functionType">Structure</property>
+      <property name="functionName">createInvisibleFormFieldWidget</property>
+      <property name="functionDescription"></property>
+      <property name="returnType">_void</property>
+    </QObject>
     <QObject class="codegen::GeneratedFunction">
       <property name="objectName"></property>
       <property name="items">
@@ -9032,7 +9142,7 @@ return rootNodeReference;</property>
                   <property name="items"/>
                   <property name="dictionaryItemName">Contents</property>
                   <property name="objectType">DictionaryItemSimple</property>
-                  <property name="value">contents</property>
+                  <property name="value">WrapString(contents)</property>
                 </QObject>
                 <QObject class="codegen::GeneratedPDFObject">
                   <property name="objectName"></property>
@@ -11030,39 +11140,6 @@ return rootNodeReference;</property>
       <property name="functionDescription">Sets form field value. Value must be correct for this form field, no checking is performed. Also, if you use this function, annotation widgets, which are attached to this form field, should also be updated (for example, appearance state and sometimes appearance streams).</property>
       <property name="returnType">_void</property>
     </QObject>
-    <QObject class="codegen::GeneratedFunction">
-      <property name="objectName"></property>
-      <property name="items">
-        <QObject class="codegen::GeneratedAction">
-          <property name="objectName"></property>
-          <property name="items">
-            <QObject class="codegen::GeneratedParameter">
-              <property name="objectName"></property>
-              <property name="items"/>
-              <property name="parameterName">locale</property>
-              <property name="parameterType">_QLocale</property>
-              <property name="parameterDescription">Locale, from which is language determined</property>
-            </QObject>
-          </property>
-          <property name="actionType">Parameters</property>
-          <property name="variableName"></property>
-          <property name="variableType">_void</property>
-          <property name="code"></property>
-        </QObject>
-        <QObject class="codegen::GeneratedAction">
-          <property name="objectName"></property>
-          <property name="items"/>
-          <property name="actionType">Code</property>
-          <property name="variableName"></property>
-          <property name="variableType">_void</property>
-          <property name="code">setLanguage(locale.name());</property>
-        </QObject>
-      </property>
-      <property name="functionType">Structure</property>
-      <property name="functionName">setLanguage</property>
-      <property name="functionDescription">Set document language.</property>
-      <property name="returnType">_void</property>
-    </QObject>
     <QObject class="codegen::GeneratedFunction">
       <property name="objectName"></property>
       <property name="items">
@@ -11120,6 +11197,39 @@ return rootNodeReference;</property>
       <property name="functionDescription">Set document language.</property>
       <property name="returnType">_void</property>
     </QObject>
+    <QObject class="codegen::GeneratedFunction">
+      <property name="objectName"></property>
+      <property name="items">
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">locale</property>
+              <property name="parameterType">_QLocale</property>
+              <property name="parameterDescription">Locale, from which is language determined</property>
+            </QObject>
+          </property>
+          <property name="actionType">Parameters</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items"/>
+          <property name="actionType">Code</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code">setLanguage(locale.name());</property>
+        </QObject>
+      </property>
+      <property name="functionType">Structure</property>
+      <property name="functionName">setLanguage</property>
+      <property name="functionDescription">Set document language.</property>
+      <property name="returnType">_void</property>
+    </QObject>
     <QObject class="codegen::GeneratedFunction">
       <property name="objectName"></property>
       <property name="items">
@@ -11689,6 +11799,134 @@ return rootNodeReference;</property>
       <property name="functionDescription">Sets page's user unit. It specifies user space unit, in multiples of 1 / 72 inch.</property>
       <property name="returnType">_void</property>
     </QObject>
+    <QObject class="codegen::GeneratedFunction">
+      <property name="objectName"></property>
+      <property name="items">
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">signatureDictionary</property>
+              <property name="parameterType">_PDFObjectReference</property>
+              <property name="parameterDescription">Signature dictionary reference</property>
+            </QObject>
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">contactInfoText</property>
+              <property name="parameterType">_QString</property>
+              <property name="parameterDescription">Contact info text</property>
+            </QObject>
+          </property>
+          <property name="actionType">Parameters</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedPDFObject">
+              <property name="objectName"></property>
+              <property name="items">
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">ContactInfo</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">contactInfoText</property>
+                </QObject>
+              </property>
+              <property name="dictionaryItemName"></property>
+              <property name="objectType">Dictionary</property>
+              <property name="value"></property>
+            </QObject>
+          </property>
+          <property name="actionType">CreateObject</property>
+          <property name="variableName">updatedSignatureDictionary</property>
+          <property name="variableType">_PDFObject</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items"/>
+          <property name="actionType">Code</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code">mergeTo(signatureDictionary, updatedSignatureDictionary);</property>
+        </QObject>
+      </property>
+      <property name="functionType">Structure</property>
+      <property name="functionName">setSignatureContactInfo</property>
+      <property name="functionDescription">Sets signature contact info field.</property>
+      <property name="returnType">_void</property>
+    </QObject>
+    <QObject class="codegen::GeneratedFunction">
+      <property name="objectName"></property>
+      <property name="items">
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">signatureDictionary</property>
+              <property name="parameterType">_PDFObjectReference</property>
+              <property name="parameterDescription">Signature dictionary reference</property>
+            </QObject>
+            <QObject class="codegen::GeneratedParameter">
+              <property name="objectName"></property>
+              <property name="items"/>
+              <property name="parameterName">reasonText</property>
+              <property name="parameterType">_QString</property>
+              <property name="parameterDescription">Reason text</property>
+            </QObject>
+          </property>
+          <property name="actionType">Parameters</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items">
+            <QObject class="codegen::GeneratedPDFObject">
+              <property name="objectName"></property>
+              <property name="items">
+                <QObject class="codegen::GeneratedPDFObject">
+                  <property name="objectName"></property>
+                  <property name="items"/>
+                  <property name="dictionaryItemName">Reason</property>
+                  <property name="objectType">DictionaryItemSimple</property>
+                  <property name="value">reasonText</property>
+                </QObject>
+              </property>
+              <property name="dictionaryItemName"></property>
+              <property name="objectType">Dictionary</property>
+              <property name="value"></property>
+            </QObject>
+          </property>
+          <property name="actionType">CreateObject</property>
+          <property name="variableName">updatedSignatureDictionary</property>
+          <property name="variableType">_PDFObject</property>
+          <property name="code"></property>
+        </QObject>
+        <QObject class="codegen::GeneratedAction">
+          <property name="objectName"></property>
+          <property name="items"/>
+          <property name="actionType">Code</property>
+          <property name="variableName"></property>
+          <property name="variableType">_void</property>
+          <property name="code">mergeTo(signatureDictionary, updatedSignatureDictionary);</property>
+        </QObject>
+      </property>
+      <property name="functionType">Structure</property>
+      <property name="functionName">setSignatureReason</property>
+      <property name="functionDescription">Sets signature reason field.</property>
+      <property name="returnType">_void</property>
+    </QObject>
     <QObject class="codegen::GeneratedFunction">
       <property name="objectName"></property>
       <property name="items">
@@ -11769,7 +12007,7 @@ return rootNodeReference;</property>
           <property name="actionType">Code</property>
           <property name="variableName"></property>
           <property name="variableType">_void</property>
-          <property name="code">m_storage.updateTrailerDictionary(qMove(trailerDictionary));
+          <property name="code">m_storage.updateTrailerDictionary(qMove(trailerDictionary));&#xd;
 updateDocumentInfo(qMove(updatedInfoDictionary));</property>
         </QObject>
       </property>