// 完毕:
using System;
using System.IO;
using System.Drawing;
using System.Text;
using System.Collections.Generic;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using GrapeCity.Documents.Pdf;
using GrapeCity.Documents.Pdf.Security;
using GrapeCity.Documents.Pdf.AcroForms;
using GrapeCity.Documents.Text;
namespace DsPdfWeb.Demos
{
// This sample shows how to sign a PDF with a .p12 file
// containing a digital certificate that uses PKCS#12
// (Public Key Cryptography Standard #12) encryption.
public class SignWithP12
{
public int CreatePDF(Stream stream)
{
var doc = new GcPdfDocument();
using var s = File.OpenRead(Path.Combine("Resources", "PDFs", "SignWithP12.pdf"));
doc.Load(s);
var p12 = Path.Combine("Resources", "Misc", "DsPdfTest2KeyStore.p12");
var sp = new SignatureProperties()
{
SignatureBuilder = new Pkcs7SignatureBuilder()
{
CertificateChain = SecurityUtils.GetCertificateChain(p12, "qq"),
},
SignatureField = doc.AcroForm.Fields[0],
};
sp.SignatureAppearance.Caption = "PKCS #12";
doc.Sign(sp, stream);
// Done.
return doc.Pages.Count;
}
}
}