protected override byte[] SignX509(byte[] pdf, bool detached)
{
_chain = GetChain();
using (PdfReader reader = new PdfReader(pdf))
{
using (MemoryStream result = new MemoryStream())
{
using (PdfStamper stp = PdfStamper.CreateSignature(reader, result, '\0', null, true))
{
PdfSignatureAppearance sap = stp.SignatureAppearance;
sap.Certificate = _chain;
var certificateInfo = new Juschubut.PdfDigitalSign.CertificateInfo(this.Certificate);
this.OnPrepareSignatureEvent(certificateInfo);
sap.SignatureRenderingMode = PdfSignatureAppearance.RenderingMode.GRAPHIC;
PdfSignature dic = null;
if (detached)
{
dic = new PdfSignature(PdfName.ADOBE_PPKLITE, PdfName.ADBE_PKCS7_DETACHED);
}
else
{
dic = new PdfSignature(PdfName.ADOBE_PPKMS, PdfName.ADBE_PKCS7_SHA1);
}
dic.Name = certificateInfo.CN;
this.AddSignature(reader, sap, certificateInfo);
sap.CryptoDictionary = dic;
int csize = detached ? 10000 : 4000;
var exc = new Dictionary <PdfName, int>();
exc.Add(PdfName.CONTENTS, csize * 2 + 2);
sap.PreClose(exc);
byte[] pk;
using (Stream stream = sap.GetRangeStream())
{
pk = this.SignMessage(stream, detached);
}
byte[] outc = new byte[csize];
PdfDictionary dic2 = new PdfDictionary();
Array.Copy(pk, 0, outc, 0, pk.Length);
dic2.Put(PdfName.CONTENTS, new PdfString(outc).SetHexWriting(true));
sap.Close(dic2);
outc = null;
pk = null;
return(result.ToArray());
}
}
}
}
private void AddSignature(PdfReader pdf, PdfSignatureAppearance sap, Juschubut.PdfDigitalSign.CertificateInfo certificate)
{
int anchoPagina = (int)pdf.GetPageSize(1).Width;
var rectangle = this.Appearance.GetRectangle(anchoPagina);
var signatureRect = new iTextSharp.text.Rectangle((float)rectangle.X, (float)rectangle.Y, (float)(rectangle.X + rectangle.Width), (float)(rectangle.Y + rectangle.Height));
int pagina = pdf.NumberOfPages;
if (this.Appearance.Page.HasValue && this.Appearance.Page.Value <= pdf.NumberOfPages)
{
pagina = this.Appearance.Page.Value;
}
sap.SetVisibleSignature(signatureRect, pagina, null);
sap.SignDate = DateTime.Now;
sap.Acro6Layers = true;
sap.SignatureRenderingMode = PdfSignatureAppearance.RenderingMode.DESCRIPTION;
if (!string.IsNullOrEmpty(this.Appearance.SignatureImage))
{
var fileInfo = new FileInfo(this.Appearance.SignatureImage);
if (!fileInfo.Exists)
{
this.Log(string.Format("No se encontro archivo de firma ológrafa ({0})", this.Appearance.SignatureImage));
}
else if (fileInfo.Length == 0)
{
this.Log(string.Format("El archivo de firma ológrafa está vacio ({0})", this.Appearance.SignatureImage));
}
else
{
try
{
sap.SignatureGraphic = iTextSharp.text.Image.GetInstance(new Uri(this.Appearance.SignatureImage));
}
catch (Exception ex)
{
Log(string.Format("Error al leer el archivo de firma ológrafo. El archivo esta dañado, no es un archivo .png, o no se puede tener acceso de lectura. {0}", this.Appearance.SignatureImage));
StringBuilder sb = new StringBuilder();
var ex2 = ex;
do
{
sb.AppendLine(ex2.Message);
ex2 = ex2.InnerException;
}while (ex2 != null);
Log("Error: " + sb.ToString());
if (!string.IsNullOrEmpty(this.Appearance.SignatureImageDefault))
{
try
{
Log("Cargando firma por default");
sap.SignatureGraphic = iTextSharp.text.Image.GetInstance(new Uri(this.Appearance.SignatureImageDefault));
}
catch (Exception ex3)
{
Log(ex3.Message);
}
}
}
sap.SignatureRenderingMode = PdfSignatureAppearance.RenderingMode.GRAPHIC;
sap.SignatureGraphic.Alignment = iTextSharp.text.Image.ALIGN_TOP;
}
}
// Descripcion de la Firma
iTextSharp.text.Font textFont = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.TIMES_ROMAN, (float)10, iTextSharp.text.Font.NORMAL, iTextSharp.text.BaseColor.BLACK);
var phrase = new iTextSharp.text.Phrase();
phrase.Font = textFont;
int fontPre = 6;
int fontFirma = this.Appearance.Height < 100 ? 8 : 10;
int fontPost = this.Appearance.Height < 100 ? 7 : 10;
if (this.Appearance.PreFirma != null)
{
AddTexto(phrase, this.Appearance.PreFirma, iTextSharp.text.Font.NORMAL, fontPre);
}
AddTexto(phrase, certificate.CN, iTextSharp.text.Font.BOLD, fontFirma);
if (this.Appearance.PostFirma != null)
{
AddTexto(phrase, this.Appearance.PostFirma, iTextSharp.text.Font.NORMAL, fontPost);
}
PdfTemplate n2 = sap.GetLayer(0);
ColumnText ct = new ColumnText(n2);
float x = n2.BoundingBox.Left;
float y = n2.BoundingBox.Top;
float w = n2.BoundingBox.Width;
float h = n2.BoundingBox.Height;
float x1 = x;
float y1 = y;
float x2 = x + w;
float y2 = y - h;
// new working code: crreate a table
PdfPTable table = new PdfPTable(1);
table.DefaultCell.Border = iTextSharp.text.Rectangle.NO_BORDER;
table.SetWidths(new[] { 1 });
table.WidthPercentage = 100;
table.AddCell(new PdfPCell(phrase)
{
HorizontalAlignment = iTextSharp.text.Element.ALIGN_CENTER,
VerticalAlignment = iTextSharp.text.Element.ALIGN_BOTTOM,
FixedHeight = y1,
Border = iTextSharp.text.Rectangle.NO_BORDER
});
ct.SetSimpleColumn(x1, y1, x2, y2);
ct.AddElement(table);
ct.Go();
}
public PrepareSignEventArgs(CertificateInfo cetificateInfo)
{
this.CertificateInfo = cetificateInfo;
}
