Saving PDF in Photoshop with Security Options

How can I access the PDF Security Options in saving a PSD or JPG file to a PDF file? What I need is to set a fixed password for all the files I save as PDF. I want to restrict the Permissions to printing only. All other options (like modifying the file or extracting images) are not allowed.

I have a sample script to save an opened file as a PDF, saving it to a PDFs sub-folder. But I don't know how to preset the Security options. How can this be scripted? Here it is:

// Defines the active document that is opened

var docRef = app.activeDocument;
var imgName= docRef.name;
imgName = imgName.substr(0, imgName.length -4);

// Get name of Folder Path
var docFolder = docRef.fullName.parent;
var folderPath = docFolder.fsName;

// Create a sub-folder called PDFs in the working folder
var newPathFolder = new Folder( folderPath + "//PDFs/");
newPathFolder.create();

// Flatten layers before saving
docRef.flatten();

// Save Options for PDFs

pdfFile = new File( folderPath + "//PDFs/" + imgName + ".pdf")
pdfSaveOptions = new PDFSaveOptions()
pdfSaveOptions.PDFCompatibility = PDFCompatibility.PDF16;
pdfSaveOptions.colorConversion = false;
pdfSaveOptions.destinationProfile = "U.S. Web Coated (SWOP) v2";
pdfSaveOptions.embedColorProfile = false;
pdfSaveOptions.optimizeForWeb = true;
pdfSaveOptions.profileInclusionPolicy = false;
pdfSaveOptions.encoding = PDFEncoding.JPEG;
pdfSaveOptions.downSample = PDFResample.PDFBICUBIC;

// set to NONE to allow PDF Security Options. Permission is for Printing only. A common password
// needs to be added as soon as the file is saved without typing it in all the time
pdfSaveOptions.PDFStandard = PDFStandard.NONE;

pdfSaveOptions.downSampleSize = 200;
pdfSaveOptions.downSampleSizeLimit = 250;
pdfSaveOptions.layers = false;
pdfSaveOptions.preserveEditing=false;
pdfSaveOptions.jpegQuality = 4;

docRef.saveAs(pdfFile, pdfSaveOptions, true, Extension.LOWERCASE);
docRef.close(SaveOptions.DONOTSAVECHANGES);

The forum does not seem to have any discussion on this. I hope somebody can share their knowledge about this.

Thanks 😉