public void EncryptiText()
{
string password = "******";
string inPdf = "Skyhigh-Secure-Datasheet-0214.pdf";
string sourcePdfFile = Path.Combine(this.pdfRessources, inPdf);
// Set source and target folders
string targetFolder = outDir;
var method = System.Reflection.MethodBase.GetCurrentMethod().Name;
string targetFile = Path.Combine(targetFolder, string.Concat(DateTime.Now.ToString("yyyyMMdd"), "_" + method + "_encrypted.pdf"));
Assert.IsTrue(File.Exists(sourcePdfFile), "Source file doesn't exist");
if (File.Exists(targetFile))
{
File.Delete(targetFile);
}
Assert.IsFalse(File.Exists(targetFile));
byte[] passwordBytes = Encoding.ASCII.GetBytes(password);
WriterProperties propComp = new WriterProperties();
propComp.SetFullCompressionMode(false);
propComp.SetCompressionLevel(CompressionConstants.NO_COMPRESSION);
propComp.SetStandardEncryption(passwordBytes, passwordBytes, 0, EncryptionConstants.ENCRYPTION_AES_256 | EncryptionConstants.DO_NOT_ENCRYPT_METADATA);
PdfWriter theCompWriter = new PdfWriter(targetFile, propComp);
PdfDocument origPdf = new PdfDocument(new PdfReader(sourcePdfFile), theCompWriter);
Assert.IsNotNull(origPdf);
origPdf.Close();
Assert.IsTrue(new FileInfo(sourcePdfFile).Length < new FileInfo(targetFile).Length, "target file is not bigger than the source file");
//check out http://itextsupport.com/apidocs/itext7/latest/com/itextpdf/kernel/pdf/PdfEncryptedPayloadDocument.html
}
public void AttachFileiText()
{
string inPdf = "noattach.pdf";
string sourcePdfFile = Path.Combine(this.pdfRessources, inPdf);
// Set source and target folders
string targetFolder = outDir;
var method = System.Reflection.MethodBase.GetCurrentMethod().Name;
string targetFile = Path.Combine(targetFolder, string.Concat(DateTime.Now.ToString("yyyyMMdd"), "_" + method + ".pdf"));
Assert.IsTrue(File.Exists(sourcePdfFile), "Source file doesn't exist");
if (File.Exists(targetFile))
{
File.Delete(targetFile);
}
Assert.IsFalse(File.Exists(targetFile));
WriterProperties propComp = new WriterProperties();
propComp.SetFullCompressionMode(false);
propComp.SetCompressionLevel(CompressionConstants.NO_COMPRESSION);
PdfWriter theCompWriter = new PdfWriter(targetFile, propComp);
PdfDocument origPdf = new PdfDocument(new PdfReader(sourcePdfFile), theCompWriter);
Assert.IsNotNull(origPdf);
PdfFileSpec spec = PdfFileSpec.CreateEmbeddedFileSpec(origPdf, Encoding.ASCII.GetBytes("Some text in the attached document"), "description of attachment here", "test.txt", null, null, null);
origPdf.AddFileAttachment("attadescr", spec);
origPdf.Close();
Assert.IsTrue(new FileInfo(sourcePdfFile).Length < new FileInfo(targetFile).Length, "target file is not bigger than the source file");
}
private bool createiText7Pdf(string password = null)
{
bool success = false;
log.Info($"Using iText7 library to create a package with format [{this.packerType}]");
if (this.overwrite)
{
deleteIfExist(this.dstFileName);
}
try
{
Stream stream = getTemplatePdfStream();
if (stream == null)
{
log.Error("Could not read the PDF Template from stream");
throw new FileNotFoundException("Could not read the PDF template");
}
WriterProperties propComp = new WriterProperties();
propComp.SetFullCompressionMode(true);
propComp.SetCompressionLevel(CompressionConstants.BEST_COMPRESSION);
if (String.IsNullOrEmpty(password))
{
log.Warn($"No password was supplied, so the output file will be unencrypted [{this.dstFileName}]");
}
else
{
byte[] passwordBytes = Encoding.ASCII.GetBytes(password);
propComp.SetStandardEncryption(passwordBytes, passwordBytes, 0, EncryptionConstants.ENCRYPTION_AES_256 | EncryptionConstants.DO_NOT_ENCRYPT_METADATA);
log.Info("Enabled PDF AES_256 encryption");
}
PdfWriter theCompWriter = new PdfWriter(this.dstFileName, propComp);
PdfDocument newPdf = new PdfDocument(new PdfReader(stream), theCompWriter);
foreach (string file in this.srcFileList)
{
string filename = Path.GetFileName(file);
PdfFileSpec fileSpec = PdfFileSpec.CreateEmbeddedFileSpec(
newPdf, File.ReadAllBytes(file), filename, filename, null, null, null);
newPdf.AddFileAttachment(filename, fileSpec);
log.Debug($"Added file '{filename}' as attachment to pdf");
}
newPdf.Close();
}
catch (Exception e)
{
log.Error($"Exception while trying to pack with iText7", e);
return(false);
}
log.Info($"Successfully packed the files into [{this.dstFileName}]");
return(success);
}