Learn how to pass in PDF security options when saving spreadsheets to PDF with Aspose.Cells for Python via .NET API....developers need to work with encrypted PDF files. For example: Secure...will be required to open the encrypted PDF document for viewing....
Excel file digital signature, verification. To protect the authenticity of a workbook's content of Excel file, you can add a digital signature using C# codes with Aspose.Cells for .Net....Close Encrypting Excel Files Detect File Format of Encrypted Office...