SeungHyun Park wrote:
> If you could take a few minutes to answer my questions, I would really
> appreciate it.
In the trailer of the PDF file, you can have a fileID.
Such a file ID is created automatically when you generate
a PDF file with iText. When you alter an existing PDF,
it is removed (not always, but in general).
The reason: if the fileID wasn't removed, you'd have
two different files with the same ID.
We could of course replace the fileID like this
if (crypto != null) {
if (append) {
encryption = reader.getCryptoRef();
}
else {
PdfIndirectObject encryptionObject =
addToBody(crypto.getEncryptionDictionary(), false);
encryption = encryptionObject.getIndirectReference();
}
fileID = crypto.getFileID();
}
else {
PdfEncryption.createInfoId(PdfEncryption.createDocumentId());
}
This way, the altered file will get a new ID (based on
the current time in milliseconds).
Change the code accordingly in class PdfStamperImp, and
let me know if it works.
br,
Bruno
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