program Encryption;

uses

SysUtils, Graphics, Classes, HPDFDoc;

var

HPDF: THotPDF;

begin

HPDF:= THotPDF.Create(nil);

try

HPDF.FileName := 'Encrypt.pdf';

HPDF.ActivateProtection := true;                                        // Enable encryption

HPDF.CryptKeyLength := k128;                                           // Set encryption type to 128 bit

HPDF.OwnerPassword := 'OwnerPass';                                // Set owner password

HPDF.UserPassword := 'UserPass';                                     // Set user password

     HPDF.ProtectOptions := [prPrint, prExtractContent];             // Allow user to extract PDF content

HPDF.BeginDoc;                                                               // ایجاد فایل PDF

HPDF.CurrentPage.TextOut(10, 10, 0, 'Encrypted document !!!'); // Print text

HPDF.EndDoc;                                                                  // بستن فایل PDF

finally

HPDF.Free;

end;

end.