Add Digital Signature to PDF via Python

Digital signature generation and verification using server-side Aspose.PDF for Python for .NET APIs. Native and high performance library

How to add Digitally Sign to PDF File Using Python for .NET Library

In order to add digital signature in PDF file, we’ll use Aspose.PDF for .NET API which is a feature-rich, powerful and easy to use document manipulation API for python-net platform. Open NuGet package manager, search for Aspose.PDF and install. You may also use the following command from the Package Manager Console.

Python Package Manager Console

pip install aspose-pdf

Add Digitally Sign to PDF via Python

You need Aspose.PDF for Python to try the code in your environment.

  1. Load the PDF with an instance of Document.
  2. Load all the PDF files with full path.
  3. Set the style of text like font, font size, color etc.
  4. Save PDF file, You will get the document with signature inserted.
  5. To verify the validity of the signature use PdfFileSignature.VerifySigned() method.

Add Electronic Signature to a PDF File using - Python

This sample code shows how to Signature PDF Pages - Python

Input file:

File not added

Certificate file:

File not added

Output format:

Output file:

   import aspose.pdf as ap

   inFile = "DigitallySign.pdf"
   outFile = "DigitallySign_out.pdf"
   document = ap.Document(inFile)
   signature = ap.facades.PdfFileSignature(document)
   # Use PKCS7/PKCS7Detached objects
   pkcs = ap.forms.PKCS7("C:\\Keys\\test.pfx", "Pa$$w0rd2020")

   signature.sign(1, True, ap.Rectangle(300, 100, 400, 200, True), pkcs)
   # Save output PDF file