Please feel free to contact us if you need any further assistance. Throw new ApplicationException("Not verified") If (!pdfSign.VerifySigned(sigNames) || !pdfSign.VerifySignature(sigNames)) Using (PdfFileSignature pdfSign = new PdfFileSignature(dataDir + "externalSignature1.pdf"))įor (int index = 0 index sigNames = pdfSign.GetSignNames() įor (int index = 0 index <= sigNames.Count - 1 index++) X509Certificate2Collection sel = X509Certificate2UI.SelectFromCollection(store.Certificates, null, null, X509SelectionFlag.SingleSelection) Ī externalSignature = new Forms.ExternalSignature(sel) Manually chose the certificate in the store X509Store store = new X509Store(StoreLocation.CurrentUser) Sign with certificate selection in the windows certificate store SignatureField field1 = new SignatureField(doc.Pages, new Rectangle(100, 400, 10, 10)) Using (FileStream fs = new FileStream(dataDir + "externalSignature1.pdf", FileMode.Open, FileAccess.ReadWrite)) In these examples the Windows certificate store is used to get the certificate for signing: // The assembly should be added into ReferencesĬonst string dataDir = + "blank.pdf", dataDir + "externalSignature1.pdf", true) In our example they are ‘Reason’ and ‘CustomAppearance’.You can use ExternalSignature object that provides X509Certificate2 for signing document. Double-click the necessary signature field to open its Properties. you need to add a file for unlock: drag & drop your PDF file or click inside the white area for choose a file. Create a signature with the ability to add the required properties. Open a PDF in Adobe Acrobat Pro and choose Forms & Signatures > Prepare Form. Convert, View, Annotate, Watermark, Parse or Assemble popular file formats from Microsoft Office, PDF, GIS, 3D, PostScript & OneNote. You need to create an object of PdfFileSignature class using input and output PDF files. Aspose.HTML Conversion Convert HTML files to PDF, Markdown, MHTML and other formats Aspose.HTML Merger Free app offering features to Merge multiple HTML, EPUB and SVG SEO Tools A set of useful and free SEO Tools for link check, keyword research and more. Public static void AddTwoSignature () įor a document with forms or acroforms that needs to be signed, see the following example. The following code snippet shows you how to add signature in a PDF file. Finally, you need to save the signed PDF using Save method of the PdfFileSignature class. You can also specify other attributes for this method. Once the object of a particular signature type is created, you can use the Sign method of the PdfFileSignature class to sign the PDF and pass the particular signature object to this class. In order to create a signature of a specific type, you need to create an object of the particular class like PKCS1, PKCS7 or PKCS7Detached using the certificate file and the password. also provides different kinds of signatures like PKCS#1, PKCS#7, and PKCS#7Detached. You also need to create a Rectangle object at which you want to add the signature and in order to set appearance you can specify an image using SignatureAppearance property of the PdfFileSignature object. Adds support for extended customization of digital signature appearance. ![]() You need to create an object of PdfFileSignature class using input and output PDF files. Create PDF documents without utilizing Adobe Acrobat. PdfFileSignature class provides ability sign PDF file. PdfFileSignature class allows you to add signature in a PDF file. Aspose.PDF functionality allows flexible configuration for digital sign instance.
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