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Adding digital signatures to PDF documents using Aspose.Pdf.Kit for .NET

RSS FEED IDEMS: Adding digital signatures to PDF documents using Aspose.Pdf.Kit for .NET

• Aspose.Pdf.Kit for .Net 2.7.0.0 Released
  

  Introduction

  In this release, new features of bookmarks creating, exchanging and exporting are supported. New methods are added to support printing large pdf files more efficiently. Form features are also improved to support validation, number format converting and MultiLineText.

  What's New?

  • Supports creating bookmarks for all pages and creating nest bookmark.
  • Supports exchanging bookmarks of XML and extracting bookmarks to HTML.
  • A new method Form.GetFieldFlag() is added for disposing Form fields more flexibly..
  • A set of new methods and properties are added in PdfViewer for printing large pdf files more efficiently.
  • Winform demos are added.

  What's Improved?

  • Validation is implemented when filling text fields.
  • The converting and representation of Number、Percent、Date and Time is enhanced for AcroForm. 
  • The method of extracting links is improved. Links in footer is supported and the method becomes more stable.
  • MultiLineText is supported when disposing Form fields.
  What's Fixed?
  • 4039 - The coordinates are different with other methods when using AddText.
  • 3996 - Form field appearing after 'Concatenate' method is called.
  • 4105 - Invalid token type encountered when reading pdf.
  • 4138 - PdfFileInfo throws exception.
  • 3935 - Flatten fields error. 
  • 2082 - Landscape page is being printed in portrait. 

  Download URL: http://www.aspose.com/Community/Files/51/aspose.pdf.kit/default.aspx

  
  Thu, 03 Jan 2008 02:28:00 GMT
  
  
• Aspose.Pdf.Kit for .Net Hotfix v2.6.4.0 Released
  

  What's New?

  • 3698- Multiple-line text field is supported. FieldType.MultiLineText is defined in FieldType.cs, which can be applied in FormEditor.AddField().
  • 3953- Getting properties of signatures is supported in PdfFileSignature. New motheds of getting properties includes: GetSignNames(), IsCoversWholeDocument(), VerifySigned(), GetRevision(), GetReason(), GetLocation(), GetDateTime() and GetToltalRevision().

  What's Fixed?

  • 3772- Unwanted fields during concatenating.
  • 3947 - Flattening after AutoFiller.ImportDataTable().
  • 3925 - TextField cropped after flatting all fields . 
  • 3900-  Stamp position is not correct when using PdfFileStamp to add stamp on some PDF files .
  • 3921 - InvalidCastException is thrown when extracting bookmarks which contain "named destination".

  Download URL: http://www.aspose.com/Community/Files/51/aspose.pdf.kit/default.aspx

  
  Mon, 29 Oct 2007 18:31:00 GMT
  
  
• Aspose.Pdf.Kit for .Net Hotfix v2.6.3.0 Released
  

  What's New?

  • COMB text field is supported in Form class.
  • Scaled Image Field: support for fully filling with the new Form.FullyFilled Property. 

  What's Fixed?

  • 2049- The document printed is not similar to Original PDF.
  • 3802 - pdf head signature is not found.
  • 3830 - PdfViewer dosn't close file . 
  • 3855- Concatenating PDF Docs with bookmarks error .
  • 3906 - Convert PDF to TIFF File without loosing any information
  • 3876 - wrong license problem in version 2.6.1.
  • 3832 - Unable to cast object error when Concatenating documents
  • 3905 - Invalid pdf format:pdf head signature is not found

  Download URL: http://www.aspose.com/Community/Files/51/aspose.pdf.kit/default.aspx

  
  Thu, 18 Oct 2007 00:19:00 GMT
  
  
• Aspose.Pdf.Kit for Java 1.9.0.0 Released
  

  Introduction

  In this release, some advanced editing features are added into PdfContentditor.

  What's New?

  • In PdfContentditor, CreateBookmarks() is added for creating bookmarks of all pages with specified color and font setting.
  • In PdfContentEditor, CreateBookmarksAction() is added for creating bookmark with specified action. The supported action types include "GoToR","Launch","GoTo" and "URI".
  • In PdfContentditor, annotations such as "Line","Square","Circle","Polygon", "PolyLine" can be exported by ExportAnnotationsXfdf().
  • In PdfContentditor, delete all the annotations or deleting the annotations of specified type are supported.
  • In PdfContentditor, DeleteBookMarks() is added which can be used to delete all bookmarks of the pdf document. It is also supported to delete the bookmark according to the specified title.
  • In PdfContentditor, DeleteAttachments() is added which can be used to delete all the attachments of the documents.

  What's Fixed?

  • Some pdf documents can not be opened afer replacing text. 

  Download URL: http://www.aspose.com/Community/Files/51/aspose.pdf.kit/category1198.aspx

  
  Fri, 12 Oct 2007 04:45:00 GMT
  
  
• Aspose.Pdf.Kit for .Net Hotfix v2.6.2.0 Released
  

  What's New?

  • 3599 - FormEditor.AddField() has been promoted to support CropBox. Fields adding to invisible area will be moved to CropBox area automatically. Also a bool value is returned from this function. Refer to this post .
  • 3666 - Form.FillField() for multiple line text fields has been updated. Now it both works for AcroForms or XfaForms, whatever the font type, font size or border style. Refer to this post.
  • 3697 - Form.FillImageField() has been promoted to support Image scaling setting. Currently, "Scale Image Proportionally", "Scale Image to Fit Rectangle" and "Use Original Size" are available for Xfa Image Fields.  Refer to this post.

  What's Fixed?

  • 3665 - A bug of combobox export value has been fixed for Form.ImportFdf(). In this hotfix, a choice box will be filled either by item labels or by export values defined in fdf. Refer to this post.
  • 3726 - A bug of combobox filling has been fixed.
  • 3746 - Another bug of combobox filling has also been fixed. Whether combobox items list is defined in pdf or not, it can be filled correctly. 
  • 3635,3685,3703 -  Fixed a series problems for replacing text.Solved the bugs that the pdf document can not be opened or show text afer replacing text,invalid color space problem.
  • 3743 - Fixed the bug that Concatinating throws "Object reference not set to an instance of an object."

  Download URL: http://www.aspose.com/Community/Files/51/aspose.pdf.kit/default.aspx

  
  Wed, 10 Oct 2007 17:28:00 GMT
  
  
• Aspose.Pdf.Kit for .Net Hotfix v2.6.1.0 Released
  

  What's Improved?

  • 3778 - Form.GetField() is upgraded. User can get the value of a multiple choice List Box. All selections are linked as a single string, each one separated by a comma such like "Item1,Item3,Item4". But this feature only works for AcroForm. At the same time, Form.FillField() is also overridden for multiple selection setting. User can fill a multiple selection List Box with several choices. Finally, Form.ExportXml() and Form.ImportXml are also upgraded for multiple choice List Box supporting.
  • 3782 - The demos for .net 2005 has been provided. The new project file is in the same directory of the old project's.

  What's Fixed?

  • 3121 - ExtractImage return blank image
  • 3547 - PdfExtractor returns words with spaces and breaks inbetween
  • 3693, 3732 - PDF prints incorrectly
  • 3559 - Exception when Extracting Text  
  • 3467 - Uncomplete Installation When Convert From Pdf to Tiff  
  • 3777 - Project deployment/installation error 

  Download URL: http://www.aspose.com/Community/Files/51/aspose.pdf.kit/default.aspx

  
  Tue, 25 Sep 2007 23:20:00 GMT
  
  
• Aspose.Pdf.Kit for .Net 2.6.0.0 Released
  

  Introduction

  In this release, digital signature is supported. A digital signature can be used to authenticate the identity of a user and the document’s contents. It stores information about the signer and the state of the document when it was signed. Form feature is improved in this release.

  What's New?

  • 3542 - Digital signature is supported. A new class PdfFileSignature is added. Example can be found here .
  • 3297 - New method FormEditor.AddListItem() is added. User can add an additional item to a ListBox/ComboBox field, either in AcroForm or XfaForm. Also a new method FormEditor.DelListItem() is provided. User can remove an existing item from a ListBox/ ComboBox field, either in AcroForm or XfaForm.

  What's Improved?

  • 3300 - Form.GetField() is upgraded. User can get the value of a multiple choice List Box. All selections are linked as a single string, each one separated by a comma such like "Item1,Item3,Item4". But this feature only works for AcroForm. At the same time, Form.FillField() is also overridden for multiple selection setting. User can fill a multiple selection List Box with several choices. Finally, Form.ExportXml() and Form.ImportXml are also upgraded for multiple choice List Box supporting.

  What's Fixed?

  • 3376 - ExtractBookMarks doesnot run with some Pdf
  • 3558 - Concatenating error for pdf documents contain bookmarks
  • 3629 - Concatenating error for pdf documents contain form fields
  • 3543 - Extracting links error from Pdf contains links in the footer.
  • 3398 - ComboBox Filling and Flattening changes Background Color 
  • 3584 - Vertical alignment in XFA text field
  • 3600 - Filling combobox error for Adobe 7 / 8 
  • 3574 - Encryption Not Working when license is set
  • 3625 - "can't find CMap file" error when extracting text from PDF
  • 3635 - "Null Reference" error when replacing text in PDF
  • "out of memory" exception of PdfViewer on the pdfs of 100+ pages

  Known Issues

  • PdfConverter and PdfViewer don't work well for multi-thread application.

  Download URL: http://www.aspose.com/Community/Files/51/aspose.pdf.kit/default.aspx

  
  Thu, 30 Aug 2007 06:31:00 GMT
  
  
• Aspose.Pdf.Kit for .Net Hotfix v2.5.2 Released
  

  What’s New?

   

  • In Class PdfPageEditor, users can set value for the property Alignment and VerticalAlignment to set the alignment styles between the original page and result page. Please refer to: http://www.aspose.com/Community/Forums/thread/79669.aspx
  • In PdfContentditor, CreateBookmarks() is added for creating bookmarks of all pages with specified color,bold,italic.
  • In PdfContentEditor, CreateBookmarksAction() is added for Create a bookmark with the specified action. The supported action types include “GoToR”, “Launch”, ”GoTo” and ”URI”.
  • In PdfContentditor, annotations such as "Line", "Square", "Circle", "Polygon" and "PolyLine" can be extracted or exported by ExportAnnotationsXfdf() and ExtractAnnotations().
  • In PdfContentditor, creating the caret annotation and rubber stamp annotation is supported.
  • In PdfContentditor, deleting the annotations of specified type is supported.
  • In Class PdfExtractor, two GetNextPageText methods and HasNextPageText methods are added to support getting each page's text in the PDF file. Please refer to: http://www.aspose.com/Community/Forums/thread/62610.aspx
  • FormEditor.AddSubmitBtn() has been provided for AcroForm Fields. Users can add a new submit button with specific HTTP/MAIL URL. User can also modify the URL as he will through FormEditor.SetSubmitUrl( ). More details please refer to: http://www.aspose.com/Community/Forums/thread/74214.aspx

   

  What’s Fixed?

   

  • Creating temp files while Extracting text. Please refer to: http://www.aspose.com/Community/Forums/thread/79243.aspx
  • The watermark's position is not correct while using PDF page as watermakr after resizing. Please refer to: http://www.aspose.com/Community/Forums/thread/78538.aspx
  • PDF file is incorrect after ReplaceText. [PDFKITNET-3158].
  • Text doesn't get replaced and the quotes are replaced by question marks when replacing text. Please refer to: http://www.aspose.com/Community/Forums/thread/79945.aspx
  • Extract text error with PDF file that doesn't contain any text. [PDFKITNET-3085].
  • Unexpected character exception in extracting text. Please refer to: http://www.aspose.com/Community/Forums/thread/77773.aspx
  •  Word brokes when extract text. [PDFKITNET-3143].
  • Extract text from PDF is broken. Please refer to: http://www.aspose.com/Community/Forums/thread/79450.aspx
  • Extracting link Error.  [PDFKITNET-3176].

   

  Download URL: http://www.aspose.com/Downloads/Aspose.Pdf.Kit/Default.aspx

  
  Mon, 02 Jul 2007 19:48:00 GMT
  
  
• Aspose.Pdf.Kit for .Net Hotfix 2.5.1.0 Published!
  

  Features added or improved:

  1) A new property named Resolution is added in Class PdfConverter which is used to control the resolution during converting PDF to images. If higher resolution is set, the speed of the converting progress will be slower.

  2）Font file name with full path is supported in FormattedText(). Please refer to http://www.aspose.com/Community/forums/thread/65067.aspx.

  3) Renaming Field is supported for AcroForm under Adobe 6.0 in FormEditor.RenameField().

  4) The Online demo of viewing pdfs is added.

   

  Bugs fixed:

  1) The StartPage and EndPage methods are of no effect in PdfConverter. Please refer to:

  http://www.aspose.com/Community/forums/thread/67380.aspx.

  2) The PdfConverter does not retain the page size. Please refer to: http://www.aspose.com/Community/Forums/thread/76939.aspx

  3）Extracting annotations bug is fixed. Extracting "FreeText" annotations is also supported. please refer to http://www.aspose.com/Community/Forums/2/77154/ShowThread.aspx.

  4) Two enumerations are renamed: FieldFlag to PropertyFlag; AppearanceFlag to AnnotationFlag. The old names does not accord with the MS naming rules.

  
  Mon, 21 May 2007 18:40:00 GMT
  
  
• Aspose.Pdf.Kit for .Net 2.5.0.0 Published!
  

  Features added or improved:
  1)    The image quality of PdfConverter is improved. New GetNextImage methods are added in PdfConverter to set the result image's format, resolution and quality. Please refer to: http://www.aspose.com/Community/Forums/thread/74884.aspx and http://www.aspose.com/Community/Forums/thread/71462.aspx
  2)    In PdfContentEditor.cs, ExtractBookMarks() is added. It can be used to extract the child item of the specified bookmark.
  3)    In PdfContentEditor.cs, DeleteBookMarks() is added.  It can be used to delete all the bookmarks of the pdf document or the bookmark according to the specified title.
  4)    In PdfContentEditor.cs, DeleteAnnotations() is added. It can be used to delete all the annotations of the pdf document or the annotation according the specified annotation type.
  5)    In PdfContentEditor.cs, DeleteAttachments() is added. It can be used to delete all the attachments of the documents.
  6)    Form.FillField() is promoted to support None-binding field. Now user can fill both normal field and none-binding field freely. Please refer to: http://www.aspose.com/Community/Forums/thread/75520.aspx.
  7)   AppearanceFlag.FLAG_VISIBLE_BUT_NOT_PRINT and AppearanceFlag.FLAG_HIDDEN_BUT_PRINT both in AcroForm and XfaForm are provided for pushButton fields. User can endow his fields more flexibility. Please refer to: http://www.aspose.com/Community/Forums/thread/74093.aspx
  8)    FieldFlag.READ_ONLY and FieldFlag.REQUIRED flag settings for XFA field are now feasible. Please refer to: http://www.aspose.com/Community/Forums/thread/71795.aspx
  
  Bugs fixed:
  1)    SplitToPages throwing an exception. Please refer to: http://www.aspose.com/Community/Forums/ShowThread.aspx?PostID=76217
  2)    PdfConverter's DoConvert() method broken. Please refer to: http://www.aspose.com/Community/Forums/ShowThread.aspx?PostID=75949
  3)    PdfConverter exporting to JPEG is all black. Please refer to: http://www.aspose.com/Community/forums/thread/68878.aspx
  4)    The bug of Form.FillImageField() in Adobe 6 has been fixed. Please refer to: http://www.aspose.com/Community/Forums/thread/75168.aspx

  
  Wed, 16 May 2007 19:55:00 GMT
  
  
• Aspose.Pdf.Kit for .Net Hotfix 2.4.2.0 Released!
  

  In this hotfix:

  1) The performance of PdfConverter.DoConvert() is greatly improved. On average, the new dll is 5 times faster than the previous version for the DoConvert() method. 

  2) Fixed the bug of extracting double text of pdf. Please refer to the thread: http://www.aspose.com/Community/Forums/ShowThread.aspx?PostID=75204
  

  
  Thu, 10 May 2007 04:52:00 GMT
  
  
• Aspose.Pdf.Kit for Java Release 1.8.0.0 Published!
  

  Features added or improved:

  1. Filling XFA fields in PDF templates created by Adobe 7 and 8 is fully supported without losing any action or script information.

         1) User can fill XFA fields in PDF templates by Adobe 7 and 8 without losing any action or scripts.

         2) Form.allFlatten() and Form.partialFlatten() are both enabled for XFA forms.

         3) Form.FillImageField() can be applied to Image Field to support image pasting in both Adobe 7 and 8.

         4) Support for XFA in FormEditor.SetSubmitUrl() is provided.

         5) Form.exportXml()/Form.importXml() have been upgraded for XFA supporting. Data in PDF documents by Adobe Designer 7 & 8 can be fully exported to a leveled XML file.

   

  2. Editing the content of PDF file is improved:

         1) Extracting bookmark information is provided by Class PdfContentEditor. You can extract bookmark information such as title, level, destination page number or action destination.

         2) Bookmark’s title has been modified according to specified title by Class PdfContentEditor.

         3) Creating Polygon, PolyLine and curve is provided by Class PdfContentEditor. You can draw polygon in existing pdf documents.

         4) Extracting the information of all links in the pdf document is provided by Class PdfContentEditor, you can extract the link information such as source page number，destination page number，link action type，destination file name，destination page View Type，link visibility，link color，link rectangle，link URI.

   

  Bugs fixed:

  1) Reading PDF files error when the startref tag at the end of PDF file. Please refer to: http://www.aspose.com/Community/forums/thread/66822.aspx

  2) Some operations such as makeNUp and changePageSize cause 'a file was broken' error when setting license. Please refer to: http://www.aspose.com/Community/forums/thread/72235.aspx

  
  Thu, 10 May 2007 03:14:00 GMT
  
  
• Aspose.Pdf.Kit for .Net Hotfix 2.4.1.0 Published!
  

  Features added or improved:
  1) A new constructor of the class FormattedText is added to support unicode font in the stamping and other applications to add text to the existing pdf. Refer to http://www.aspose.com/COMMUNITY/forums/thread/73515.aspx
  2) PdfFileStamp.AddPageNumber() is improved to support adding footer/header into the existing pdf. Refer to http://www.aspose.com/COMMUNITY/forums/thread/73276.aspx
  3) Form.ExportXml() has been upgraded for XFA supporting. Data in PDF documents by Adobe Designer 7 & 8 can be fully exported to a leveled XML file, which is exactly the same with Adobe exported one. The bug of exporting PDF file with master page is also resolved. Please refer to http://www.aspose.com/Community/forums/thread/72056.aspx and http://www.aspose.com/Community/forums/thread/72141.aspx
  4) Form.ImportXml() has also been upgraded for XFA supporting. XML files from either Adobe or Form.ExportXml can be imported to PDF templates by Adobe Designer 7 & 8. Please refer to http://www.aspose.com/Community/forums/thread/72141.aspx.
  5) In PdfContentEditor.cs, ExportAnnotationsXfdf() is added for exporting the content of the annotations specified type from the pdf into the xfdf stream. Now the supported annotation types include "Text","Highlight", "Squiggly", "Strikeout" and "Underline" .
  6）In PdfContentEditor.cs, ExtractAnnotations() is added for extracting  the content of the annotations specified type from a existing pdf document. Now the supported annotation types include "Text","Highlight", "Squiggly", "Strikeout" and "Underline".

  Bugs Fixed:
  1) Hyperlink lost after stamping. Please refer to: http://www.aspose.com/Community/forums/ShowThread.aspx?PostID=71529
  2) Can't extract text after stamping. Please refer to: http://www.aspose.com/Community/forums/thread/65075.aspx
  3) Extracting text hangs. Please refer to: http://www.aspose.com/Community/forums/thread/68884.aspx
  4) Text missing/dropping when extracting text from pdf. Please refer to: http://www.aspose.com/Community/forums/thread/70679.aspx
  5) PDF Form Field tab error after Concatenation. Please refer to: http://www.aspose.com/COMMUNITY/forums/thread/71630.aspx
  6) Color changes when convert from PDF to image.
  7) FileSecurity.DecryptFile() error. Refer to http://www.aspose.com/COMMUNITY/forums/thread/72706.aspx
  

  
  Thu, 19 Apr 2007 18:27:00 GMT
  
  
• Aspose.Pdf.Kit for .Net 2.4.0.0 Released!
  

  New features added：
  1) Added support for reading and revising pdf with 128-bit RC4 encryption. Refer to :
  http://www.aspose.com/Community/forums/thread/69000.aspx
  2)In classes PdfContentEditor, some interfaces are revised to support adding multi-annotations.

  BUgs fixed:
  1) Fixed a bug of text missing/losting when printview/convert files. Please refer:http://www.aspose.com/Community/forums/thread/66846.aspx and http://www.aspose.com/Community/forums/thread/69513.aspx
  2) Fixed a bug of using the same input Stream to append. Please refer to: http://www.aspose.com/Community/forums/thread/69268.aspx
  3) Fixed a bug of watermarking with an PNG format image.
  4) Fixed a bug of concatenating PDF files with link of Destination.
  5) Fixed a bug of Hyperlink doesn't work after setting file info.
  6) Reducing the result PDF size. Please refer to: http://www.aspose.com/Community/forums/thread/64994.aspx
  7）Fixed a bug of of PdfContentEditor.CreateFileAttachment() for adding multi-attachment files to an existing pdf file. Please refer to http://www.aspose.com/Community/forums/thread/69504.aspx
  8）Fixed a bug of PdfFileEditor. Concatenate() for error when Concatenating Pdf documents containing destination.

  
  Fri, 23 Mar 2007 04:01:00 GMT
  
  
• Aspose.Pdf.Kit for .Net Hotfix 2.3.4.0 Published
  

  In this hotfix:

  1) In classes PdfFileEditor, PdfFileInfo and PdfFileSecurity, some interfaces are revised to throw exceptions instead of returning "false". Please refer to http://www.aspose.com/Community/forums/thread/68492.aspx .
  2) Fixed a bug of PdfContentEditor.Save() for no operations after PdfContentEditor. BindPdf(). Please refer to http://www.aspose.com/Community/forums/thread/68143.aspx.
  3) Added a new property StartingNumber in PdfFileStamp to set the start number for page numbering. Please refer to  http://www.aspose.com/Community/forums/ShowThread.aspx?PostID=68559.
  4) Added support to the visual or printable size of a pdf in some operations PdfFileStamp. Please refer to http://www.aspose.com/Community/forums/thread/68575.aspx .
  

  
  Sun, 04 Mar 2007 16:43:00 GMT
  
  

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