IncrementalPdfSigner (com.pd4ml 4.1.1 API Documentation)

java.lang.Object
- com.pd4ml.pdf.sign.pdf.IncrementalPdfSigner

```
public final class IncrementalPdfSigner
extends java.lang.Object
```
Applies a PDF digital signature as a raw incremental update, on top of IncrementalUpdateWriter (the generic COS incremental-update mechanics -- object offsets, xref, trailer) from com.pd4ml.pdf.cos.writer. Everything in this class is specific to digital signatures: building the /Sig dictionary, the signature field widget, wiring it into the AcroForm and the target page, the optional visible appearance, DocMDP certification, and the /Contents//ByteRange placeholder dance a PDF signature's byte-range hash requires.
Not supported: encrypted input PDFs. com.pd4ml.pdf.cos is a reader (its own docs: "this package is a reader, not a PDF writer/optimizer"), so it can decrypt while parsing but can't re-encrypt on write; appending plaintext new objects into an otherwise-encrypted incremental update would be worse than refusing outright.

Constructor Summary

Constructors
Constructor Description

IncrementalPdfSigner(byte[] originalPdfBytes, SigningOptions options)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`COSDocument`	`getDocument()`	The parsed input document, e.g.
`SignResult`	`sign(ByteRangeSigner signer)`	Performs the whole incremental-update signing flow, calling `signer` exactly once, with exactly the bytes the resulting PDF signature is defined to cover.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - IncrementalPdfSigner
```
public IncrementalPdfSigner(byte[] originalPdfBytes,
                            SigningOptions options)
                     throws PdfSigningException
```
    Throws:
    
    PdfSigningException
- Method Detail
  - getDocument
```
public COSDocument getDocument()
```
    The parsed input document, e.g. for a caller that wants to inspect it (page count, existing signatures, ...) before signing.
  - sign
```
public SignResult sign(ByteRangeSigner signer)
                throws PdfSigningException
```
    Performs the whole incremental-update signing flow, calling signer exactly once, with exactly the bytes the resulting PDF signature is defined to cover.
    
    Throws:
    
    PdfSigningException