‫حذف محدودیت‌های فایل‌های PDF توسط iTextSharp

using System.IO;
using iTextSharp.text.pdf;

namespace PdfDecryptor.Core
{
    public class PasswordDecryptor
    {
        public string ReadPassword { set; get; }
        public string PdfPath { set; get; }
        public string OutputPdf { set; get; }

        public void DecryptPdf()
        {
            PdfReader.unethicalreading = true;

            PdfReader reader;
            if (string.IsNullOrWhiteSpace(ReadPassword))
                reader = new PdfReader(PdfPath);
            else
                reader = new PdfReader(PdfPath, System.Text.Encoding.UTF8.GetBytes(ReadPassword));

            using (var stamper = new PdfStamper(reader, new FileStream(OutputPdf, FileMode.Create)))
            {
                stamper.Close();
            }
        }
    }
}

using System.IO;
using iTextSharp.text.pdf;

namespace PdfDecryptor.Core
{
    public class Decryptor
    {
        public string PfxPath { set; get; }
        public string PfxPassword { set; get; }
        public string InputPdf { set; get; }
        public string OutputPdf { set; get; }

        public void DecryptPdf()
        {
            var certs = new PfxReader().ReadCertificate(PfxPath, PfxPassword);
            var reader = new PdfReader(InputPdf, certs.X509Certificates[0], certs.PrivateKey);
            using (var stamper = new PdfStamper(reader, new FileStream(OutputPdf, FileMode.Create)))
            {
                stamper.Close();
            }
        }
    }
}