[jira] [Commented] (PDFBOX-3771) Signing example does not work if inFile = outFile

["Tilman Hausherr (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PDFBOX-3771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15990981#comment-15990981 ] 

Tilman Hausherr commented on PDFBOX-3771:
-----------------------------------------

Not at all. The code reads the original PDF file into a new file, and then appends the extra stuff.
{code}
IOUtils.copy(new RandomAccessInputStream(incrementalInput), incrementalOutput);
incrementalOutput.write(incrementPart);
{code}
I don't like to introduce logic to check whether the two are identical, the signature code is so complex already.

> Signing example does not work if inFile = outFile
> -------------------------------------------------
>
>                 Key: PDFBOX-3771
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-3771
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Signing
>    Affects Versions: 2.0.5
>         Environment: Mac, JDK8
>            Reporter: Manu Schiller
>            Priority: Minor
>
> Hi,
> I tried using the Signature example (https://svn.apache.org/viewvc/pdfbox/trunk/examples/src/main/java/org/apache/pdfbox/examples/signature/) which works great for certifying pdfs. 
> However if I want to certify and replace the original pdf without creating a new one (like foo_signed.pdf should only be foo.pdf), I get an exception:
> `Exception in thread "main" java.io.IOException: Error: End-of-File, expected line pdfbox`
> I invoked the method like this (L215 of CreateSignature.java): 
> `signing.signDetached(inFile);`
> How would I change the example so that I can certify pdfs without creating copy files?



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