/**
* @Method Method that inserts the GraphSign in the pdf document and call for signing it
* @Params DocumentData source document to be signed
* @Params GraphSign sign Image and metadata about the Graphical Sign
* @Params signer data
* @Return true if the document is correctly signed, false if something wrong
*/
public bool doSignature(DocumentData source,GraphSign sign, string metadata, Signer signer)
{
bool result = false;
bool insertedSign = false;
/* if (this.open(source))
{
Dictionary<String, String> hMap = this.reader.Info;
String keywords = "";
hMap.TryGetValue("Keywords",out keywords);
keywords += metadata+Properties.Settings.Default.stringSeparator;
this.Log.Debug("Keywords length " + keywords.Length);
hMap.Remove("Keywords");
hMap.Add("Keywords", keywords);
//Copy PDF
this.Log.Debug("Starting PDF copy");
for (int i = 1; i <= reader.NumberOfPages; i++)
{
doc.SetPageSize(reader.GetPageSize(i));
doc.NewPage();
PdfContentByte cb = writer.DirectContent;
PdfImportedPage importedPage = writer.GetImportedPage(reader, i);
int rotation = reader.GetPageRotation(i);
if (rotation == 90 || rotation == 270)
cb.AddTemplate(importedPage, 0, -1.0F, 1.0F, 0, 0, reader.GetPageSizeWithRotation(i).Height);
else
cb.AddTemplate(importedPage, 1.0F, 0, 0, 1.0F, 0, 0);
//Insert Graph image on coordenates
if (i == signer.Page)
{
this.Log.Debug(String.Format("Trying to insert graph sign in Page {0}, x={1}, y={2}", signer.Page, signer.X, signer.Y));
insertedSign = this.insertGraphSign(sign, cb, signer.X, signer.Y);
}
}
* */
insertedSign = true;
if (insertedSign)
{
// this.Log.Debug("Graph Sign inserted correctly, starting PAdES process");
//Do PAdES
// this.close();
DigitalSignUtils.signPDF(source, metadata, sign,signer);
this.Log.Debug("Moving files");
if(File.Exists(source.Docpath+"-signed.pdf"))
File.Delete(source.Docpath+"-signed.pdf");
File.Copy(source.Docsignedpath, source.Docpath + "-signed.pdf");
result = true;
}
// }
// this.close();
return result;
}
/**
* @Method transforms a DocumentData into DatosCaptura reading the signed PDF File and encoding it in Base64
* @Parameters document ready to send
* @Return Encoded signed PDF File
*/
public static DatosCaptura toDatosCaptura(DocumentData doc)
{
DatosCaptura result = new DatosCaptura();
result.docname = doc.Docname;
result.uuid = doc.Uuid;
result.idoperation = doc.Idoperation;
if (File.Exists(doc.Docsignedpath))
{
result.value = fileToBase64(doc.Docsignedpath);
}
else
result.value = "";
return result;
}
public static List<DocumentData> parseDocumentData(string jsonData)
{
List<DocumentData> result = new List<DocumentData>();
dynamic data = JsonConvert.DeserializeObject(jsonData);
foreach (dynamic obj in data)
{
DocumentData doc = new DocumentData();
doc.Docname = obj.docname;
doc.Docmetadata2 = obj.docmetadata2.ToString();
doc.Idoperation = obj.idoperation.ToString();
doc.Uuid = (int)obj.uuid;
doc.Docmetadata = parseSigners(obj.docmetadata.ToString());
result.Add(doc);
}
return result;
}
/**
* @Method get the Document Signers that have not yet signed
* @Params Document to check Signers
* @Return List of Signers
*/
private List<Signer> getRemainingSigners(DocumentData doc)
{
List<Signer> result = new List<Signer>();
foreach (Signer s in doc.Docmetadata)
if (!s.Signed)
result.Add(s);
return result;
}
/**
* @Method Check if the Wacom Pad is connected, if so calls the pad controller for signing
* and after calls PDF controller for digital signing
* @Params DocumentData doc document to be signed
*/
internal bool signPdf(DocumentData doc, int signer)
{
doc.Docmetadata[signer].Signed = false;
if (this.padController.checkPadConnected())
{
this.Log.Debug(String.Format("The document {0} from operation {1} is going to be signed by {2}", doc.Docname, doc.Idoperation, doc.Docmetadata[signer].Nombre));
this.Log.Debug("Calling Wacom Pad Controller");
GraphSign sign = this.padController.padSigning(doc.Docmetadata[signer]);
if (sign != null)
{
this.Log.Debug("Graph Sign retrieved correctly");
String jsonSign = Parser.serializeObject(sign.Points);
//this.Log.Debug("JSON string for sign "+jsonSign);
String[] signArray = this.getSignString(sign);
PDF.DigitalSignUtils.index = signer;
doc.Docmetadata[signer].Signed = this.pdfController.doSignature(doc, sign, signArray, doc.Docmetadata[signer]);
}
}
else
throw new Exception("pad not connected");
return doc.Docmetadata[signer].Signed;
}
public static void signPDF_old(DocumentData doc, Dictionary<String, String> metadata)
{
ILog Log;
Log = LogManager.GetLogger(Properties.Settings.Default.logName);
try
{
PdfReader reader = new PdfReader(doc.Docsignedpath);
if (File.Exists(doc.Docsignedpath + "-signed.pdf"))
File.Delete(doc.Docsignedpath + "-signed.pdf");
FileStream fos = new FileStream(doc.Docsignedpath + "-signed.pdf", FileMode.CreateNew, FileAccess.Write);
doc.Docsignedpath = doc.Docsignedpath + "-signed.pdf";
Log.Debug(String.Format("Creating Stamper for doc {0}", doc.Docname));
PdfStamper stp = PdfStamper.CreateSignature(reader, fos, '\x002', null, true);
Log.Debug(String.Format("Creating Certificate for doc {0}", doc.Docname));
Org.BouncyCastle.X509.X509Certificate[] chain = crearCertificado();
Log.Debug(String.Format("Reading private key for doc {0}", doc.Docname));
AsymmetricKeyParameter pk = readPrivateKey();
stp.Writer.CloseStream = false;
LtvVerification v = stp.LtvVerification;
AcroFields af = stp.AcroFields;
Log.Debug(String.Format("Adding metadata for doc {0}", doc.Docname));
stp.MoreInfo = metadata;
foreach (String sigName in af.GetSignatureNames())
{
v.AddVerification(sigName, new OcspClientBouncyCastle(), new CrlClientOffline(null), LtvVerification.CertificateOption.WHOLE_CHAIN, LtvVerification.Level.OCSP_CRL, LtvVerification.CertificateInclusion.NO);
}
PdfSignatureAppearance sap = stp.SignatureAppearance;
sap.Reason = "";
sap.Location = "";
//Preserve some space for the contents
int contentEstimated = 15000;
Dictionary<PdfName, int> exc = new Dictionary<PdfName, int>();
exc.Add(PdfName.CONTENTS, (contentEstimated * 2 + 2));
//Add timestamp
Log.Debug(String.Format("Adding timestamp for doc {0}", doc.Docname));
TSAClientBouncyCastle tsc = new TSAClientBouncyCastle(Properties.Settings.Default.tsaUrl, Properties.Settings.Default.tsaUser, Properties.Settings.Default.tsaPass, contentEstimated, DigestAlgorithms.SHA512);
// Creating the signature
//LtvTimestamp.Timestamp(sap, tsc, null);
//Org.BouncyCastle.Crypto.BouncyCastleDigest messageDigest = MessageDigest.getInstance("SHA1");
//IExternalDigest digest = new Org.BouncyCastle.Crypto.BouncyCastleDigest();
//RSACryptoServiceProvider crypt = (RSACryptoServiceProvider)cert.PrivateKey;
Log.Debug(String.Format("Dreating signature for doc {0}", doc.Docname));
IExternalSignature signature = new PrivateKeySignature(pk, DigestAlgorithms.SHA512);
MakeSignature.SignDetached(sap, signature, chain, null, null, tsc, 0, CryptoStandard.CMS);
Log.Debug(String.Format("Closing file for doc {0}", doc.Docname));
stp.Close();
fos.Close();
reader.Close();
}
catch (IOException ex)
{
Log.Error("IOException", ex);
}
catch (DocumentException dex)
{
Log.Error("DocumentException", dex);
}
}
/**
*
*
*/
public static void signPDF(DocumentData doc, String metadata, GraphSign sign, Signer signer)
{
ILog Log;
Log = LogManager.GetLogger(Properties.Settings.Default.logName);
if (!File.Exists(doc.Docsignedpath /*+ "-signed.pdf"*/))
{
File.Copy(doc.Docpath, doc.Docsignedpath);
}
try
{
PdfReader reader = new PdfReader(doc.Docsignedpath);
if (File.Exists(doc.Docsignedpath + "-signed.pdf"))
File.Delete(doc.Docsignedpath + "-signed.pdf");
FileStream fos = new FileStream(doc.Docsignedpath + "-signed.pdf", FileMode.CreateNew, FileAccess.Write);
doc.Docsignedpath = doc.Docsignedpath + "-signed.pdf";
Log.Debug(String.Format("Creating Stamper for doc {0}",doc.Docname));
PdfStamper stp = PdfStamper.CreateSignature(reader, fos, '\0', null, true);
Log.Debug(String.Format("Creating Certificate for doc {0}", doc.Docname));
Org.BouncyCastle.X509.X509Certificate[] chain = crearCertificado();
Log.Debug(String.Format("Reading private key for doc {0}", doc.Docname));
AsymmetricKeyParameter pk = readPrivateKey();
stp.Writer.CloseStream = false;
LtvVerification v = stp.LtvVerification;
//AcroFields af = stp.AcroFields;
Log.Debug(String.Format("Adding metadata for doc {0}", doc.Docname));
//stp.MoreInfo = metadata;
// foreach (String sigName in af.GetSignatureNames())
// {
// v.AddVerification(sigName, new OcspClientBouncyCastle(), new CrlClientOffline(null), LtvVerification.CertificateOption.WHOLE_CHAIN, LtvVerification.Level.OCSP_CRL, LtvVerification.CertificateInclusion.NO);
// }
PdfSignatureAppearance sap = stp.SignatureAppearance;
//sap.SignatureRenderingMode = PdfSignatureAppearance.RenderingMode.DESCRIPTION;
sap.Reason = metadata;
sap.Location = "";
sign.Image.MakeTransparent();
sap.Image = iTextSharp.text.Image.GetInstance(sign.Image, System.Drawing.Imaging.ImageFormat.Png);
sap.Layer2Text = "";
//Preserve some space for the contents
int contentEstimated = 15000;
Dictionary<PdfName, int> exc = new Dictionary<PdfName, int>();
exc.Add(PdfName.CONTENTS, (contentEstimated * 2 + 2));
//Add timestamp
Log.Debug(String.Format("Adding timestamp for doc {0}", doc.Docname));
TSAClientBouncyCastle tsc = new TSAClientBouncyCastle(Properties.Settings.Default.tsaUrl, Properties.Settings.Default.tsaUser, Properties.Settings.Default.tsaPass, contentEstimated, DigestAlgorithms.SHA512);
// Creating the signature
//LtvTimestamp.Timestamp(sap, tsc, null);
//Org.BouncyCastle.Crypto.BouncyCastleDigest messageDigest = MessageDigest.getInstance("SHA1");
//IExternalDigest digest = new Org.BouncyCastle.Crypto.BouncyCastleDigest();
//RSACryptoServiceProvider crypt = (RSACryptoServiceProvider)cert.PrivateKey;
Log.Debug(String.Format("Dreating signature for doc {0}", doc.Docname));
IExternalSignature signature = new PrivateKeySignature(pk, DigestAlgorithms.SHA512);
sap.Layer2Text = "Huella: "+signature.GetHashCode();
sap.SetVisibleSignature(new Rectangle(signer.X, signer.Y, 200, 200), signer.Page, signer.Nombre+index);
MakeSignature.SignDetached(sap, signature, chain, null, null, tsc, 0, CryptoStandard.CMS);
Log.Debug(String.Format("Closing file for doc {0}", doc.Docname));
stp.Close();
fos.Close();
reader.Close();
}
catch (IOException ex)
{
Log.Error("IOException", ex);
}
catch (DocumentException dex)
{
Log.Error("DocumentException", dex);
}
}
/**
* @Method open a existing pdf file
* @Param path path of pdfFile
* @Return returns true if the file was opened or false if file couldn't be opened
*/
private bool open(DocumentData pdfDoc)
{
String path;
pdfDoc.Docsignedpath = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)+ "\\"+ pdfDoc.Idoperation + "\\signed\\" + pdfDoc.Docname;
if (pdfDoc.documentHasBeenSigned())
{
path = pdfDoc.Docpath + "-signed.pdf";
//signedpath =
}
else
{
path = pdfDoc.Docpath;
}
if (File.Exists(pdfDoc.Docpath))
{
doc = new Document();
reader = new PdfReader(path);
fos = new FileStream(pdfDoc.Docsignedpath, FileMode.Create, FileAccess.Write);
writer = PdfWriter.GetInstance(doc, fos);
doc.Open();
doc.AddDocListener(writer);
return true;
}
return false;
}
/**
* @Method Method that inserts the GraphSign in the pdf document and call for signing it
* @Params DocumentData source document to be signed
* @Params GraphSign sign Image and metadata about the Graphical Sign
* @Params jsonSign Graphometric info JSON serialized
* @Params signer data
* @Return true if the document is correctly signed, false if something wrong
*/
internal bool doSignature(DocumentData doc, GraphSign sign, String jsonSign, Signer signer, bool b)
{
String encrypted = jsonSign;
return this.doSignature(doc, sign, encrypted,signer);
}
/**
* @Method Method that inserts the GraphSign in the pdf document and call for signing it
* @Params DocumentData source document to be signed
* @Params GraphSign sign Image and metadata about the Graphical Sign
* @Params signArray String Array with Graphometric info
* @Params signer data
* @Return true if the document is correctly signed, false if something wrong
*/
internal bool doSignature(DocumentData doc, GraphSign sign, string[] signArray, Signer signer)
{
String encrypted ="";
foreach (String s in signArray)
encrypted += s;
//this.Log.Debug("Sign String to encrypt " + encrypted);
encrypted = DigitalSignUtils.encrypt(encrypted);
//this.Log.Debug("Sign String encrypted " + encrypted);
return this.doSignature(doc, sign, encrypted,signer);
}
