/// <summary>Embed a encrypted payload to a PdfDocument.</summary>
/// <param name="doc">PdfDocument to add the file to</param>
/// <param name="filePath">path to the encrypted file</param>
/// <param name="encryptedPayload">the encrypted payload dictionary</param>
/// <param name="mimeType">mime-type of the file</param>
/// <param name="fileParameter">Pdfdictionary containing file parameters</param>
/// <returns>PdfFileSpec containing the file specification of the encrypted payload</returns>
public static PdfFileSpec Create(PdfDocument doc, String filePath, PdfEncryptedPayload encryptedPayload, PdfName
mimeType, PdfDictionary fileParameter)
{
return(AddEncryptedPayloadDictionary(PdfFileSpec.CreateEmbeddedFileSpec(doc, filePath, GenerateDescription
(encryptedPayload), GenerateFileDisplay(encryptedPayload), mimeType, fileParameter, PdfName.EncryptedPayload
), encryptedPayload));
}
private void ExtractEncrypted(String encryptedName, String wrapperName, byte[] password)
{
String inPath = sourceFolder + "cmp_" + wrapperName;
String cmpPath = sourceFolder + "cmp_" + encryptedName;
String outPath = destinationFolder + encryptedName;
String diff = "diff_" + encryptedName + "_";
PdfDocument document = new PdfDocument(new PdfReader(inPath));
PdfEncryptedPayloadDocument encryptedDocument = document.GetEncryptedPayloadDocument();
byte[] encryptedDocumentBytes = encryptedDocument.GetDocumentBytes();
FileStream fos = new FileStream(outPath, FileMode.Create);
fos.Write(encryptedDocumentBytes);
fos.Dispose();
document.Close();
PdfEncryptedPayload ep = encryptedDocument.GetEncryptedPayload();
NUnit.Framework.Assert.AreEqual(PdfEncryptedPayloadFileSpecFactory.GenerateFileDisplay(ep), encryptedDocument
.GetName());
if (password != null)
{
NUnit.Framework.Assert.IsNull(new CompareTool().CompareByContent(outPath, cmpPath, destinationFolder, diff
, password, password));
}
else
{
RandomAccessFileOrArray raf = new RandomAccessFileOrArray(new RandomAccessSourceFactory().CreateBestSource
(cmpPath));
byte[] cmpBytes = new byte[(int)raf.Length()];
raf.ReadFully(cmpBytes);
raf.Close();
NUnit.Framework.Assert.AreEqual(cmpBytes, encryptedDocumentBytes);
}
}
public static PdfFileSpec Wrap(PdfDictionary dictionary)
{
if (!PdfName.EncryptedPayload.Equals(dictionary.GetAsName(PdfName.AFRelationship)))
{
LogManager.GetLogger(typeof(PdfEncryptedPayloadFileSpecFactory)).Error(iText.IO.LogMessageConstant.ENCRYPTED_PAYLOAD_FILE_SPEC_SHALL_HAVE_AFRELATIONSHIP_FILED_EQUAL_TO_ENCRYPTED_PAYLOAD
);
}
PdfDictionary ef = dictionary.GetAsDictionary(PdfName.EF);
if (ef == null || (ef.GetAsStream(PdfName.F) == null) && (ef.GetAsStream(PdfName.UF) == null))
{
throw new PdfException(PdfException.EncryptedPayloadFileSpecShallHaveEFDictionary);
}
if (!PdfName.Filespec.Equals(dictionary.GetAsName(PdfName.Type)))
{
throw new PdfException(PdfException.EncryptedPayloadFileSpecShallHaveTypeEqualToFilespec);
}
if (!dictionary.IsIndirect())
{
throw new PdfException(PdfException.EncryptedPayloadFileSpecShallBeIndirect);
}
PdfFileSpec fileSpec = PdfFileSpec.WrapFileSpecObject(dictionary);
if (PdfEncryptedPayload.ExtractFrom(fileSpec) == null)
{
throw new PdfException(PdfException.EncryptedPayloadFileSpecDoesntHaveEncryptedPayloadDictionary);
}
return(fileSpec);
}
// Note as stated by spec the desscription and file display
// shall not be derived from the encrypted payload's actual file name
// to avoid potential disclosure of sensitive information
public static String GenerateDescription(PdfEncryptedPayload ep)
{
String result = "This embedded file is encrypted using " + ep.GetSubtype().GetValue();
PdfName version = ep.GetVersion();
if (version != null)
{
result += " , version: " + version.GetValue();
}
return(result);
}
/// <summary>Embed a encrypted payload to a PdfDocument.</summary>
/// <param name="doc">PdfDocument to add the file to</param>
/// <param name="fileStore">byte[] containing the file</param>
/// <param name="encryptedPayload">the encrypted payload dictionary</param>
/// <returns>PdfFileSpec containing the file specification of the encrypted payload</returns>
public static PdfFileSpec Create(PdfDocument doc, byte[] fileStore, PdfEncryptedPayload encryptedPayload)
{
return(Create(doc, fileStore, encryptedPayload, null, null));
}
/// <summary>Embed a encrypted payload to a PdfDocument.</summary>
/// <param name="doc">PdfDocument to add the file to</param>
/// <param name="fileStore">byte[] containing the file</param>
/// <param name="encryptedPayload">the encrypted payload dictionary</param>
/// <param name="fileParameter">Pdfdictionary containing file parameters</param>
/// <returns>PdfFileSpec containing the file specification of the encrypted payload</returns>
public static PdfFileSpec Create(PdfDocument doc, byte[] fileStore, PdfEncryptedPayload encryptedPayload,
PdfDictionary fileParameter)
{
return(Create(doc, fileStore, encryptedPayload, null, fileParameter));
}
private static PdfFileSpec AddEncryptedPayloadDictionary(PdfFileSpec fs, PdfEncryptedPayload ep)
{
((PdfDictionary)fs.GetPdfObject()).Put(PdfName.EP, ep.GetPdfObject());
return(fs);
}
public static String GenerateFileDisplay(PdfEncryptedPayload ep)
{
return(ep.GetSubtype().GetValue() + "Protected.pdf");
}
/// <summary>Embed a encrypted payload to a PdfDocument.</summary>
/// <param name="doc">PdfDocument to add the file to</param>
/// <param name="is">stream containing encrypted file</param>
/// <param name="encryptedPayload">the encrypted payload dictionary</param>
/// <returns>PdfFileSpec containing the file specification of the encrypted payload</returns>
public static PdfFileSpec Create(PdfDocument doc, Stream @is, PdfEncryptedPayload encryptedPayload)
{
return(Create(doc, @is, encryptedPayload, null, null));
}
/// <summary>Embed a encrypted payload to a PdfDocument.</summary>
/// <param name="doc">PdfDocument to add the file to</param>
/// <param name="is">stream containing encrypted file</param>
/// <param name="encryptedPayload">the encrypted payload dictionary</param>
/// <param name="mimeType">mime-type of the file</param>
/// <returns>PdfFileSpec containing the file specification of the encrypted payload</returns>
public static PdfFileSpec Create(PdfDocument doc, Stream @is, PdfEncryptedPayload encryptedPayload, PdfName
mimeType)
{
return(Create(doc, @is, encryptedPayload, mimeType, null));
}
/// <summary>Embed a encrypted payload to a PdfDocument.</summary>
/// <param name="doc">PdfDocument to add the file to</param>
/// <param name="filePath">path to the encrypted file</param>
/// <param name="encryptedPayload">the encrypted payload dictionary</param>
/// <returns>PdfFileSpec containing the file specification of the encrypted payload</returns>
public static PdfFileSpec Create(PdfDocument doc, String filePath, PdfEncryptedPayload encryptedPayload)
{
return(Create(doc, filePath, encryptedPayload, null, null));
}
