Support for XAdES Signature

Introduction

Aspose.Cells for Python via .NET provides supports signing workbooks with XAdES Signature. For this, the API provides DigitalSignature class and XAdESType enumeration.

How to Add XAdES Signature for Excel

The following code snippet demonstrates the use of the DigitalSignature class to sign the source workbook.

from aspose.cells import Workbook
from aspose.cells.digitalsignatures import DigitalSignature, DigitalSignatureCollection, XAdESType
from datetime import datetime

#  For complete examples and data files, please go to https:# github.com/aspose-cells/Aspose.Cells-for-.NET
# Source directory
sourceDir = RunExamples.Get_SourceDirectory()
# Output directory
outputDir = RunExamples.Get_OutputDirectory()
workbook = Workbook(sourceDir + "sourceFile.xlsx")
password = "pfxPassword"
pfx = "pfxFile"
signature = DigitalSignature(open(pfx, "rb").read(), password, "testXAdES", datetime.now())
signature.x_ad_es_type = XAdESType.X_AD_ES
dsCollection = DigitalSignatureCollection()
dsCollection.add(signature)
workbook.set_digital_signature(dsCollection)
workbook.save(outputDir + "XAdESSignatureSupport_out.xlsx")