Support for XAdES Signature

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

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

Sample Code

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
//Source directory
string sourceDir = RunExamples.Get_SourceDirectory();

//Output directory
string outputDir = RunExamples.Get_OutputDirectory();

Workbook workbook = new Workbook(sourceDir + "sourceFile.xlsx");
string password = "pfxPassword";
string pfx = "pfxFile";

DigitalSignature signature = new DigitalSignature(File.ReadAllBytes(pfx), password, "testXAdES", DateTime.Now);

signature.XAdESType = XAdESType.XAdES;
DigitalSignatureCollection dsCollection = new DigitalSignatureCollection();
dsCollection.Add(signature);

workbook.SetDigitalSignature(dsCollection);

workbook.Save(outputDir + "XAdESSignatureSupport_out.xlsx");