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|Header Checksum illegal on valid pdf
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|Author:||MJLaukala [ Wed Jan 20, 2016 8:34 pm ]|
|Post subject:||Header Checksum illegal on valid pdf|
I keep getting exceptions on certain pdfs that I am trying to open with PDFSharp. The file does open in adobe and closes without prompting for a resave so it seems to be a valid pdf. Attached is an IssueSubmission project that reproduces this exception.
|Author:||Thomas Hoevel [ Thu Jan 21, 2016 2:42 pm ]|
|Post subject:||Re: Header Checksum illegal on valid pdf|
Thanks for your submission.
The file does open in adobe and closes without prompting for a resave so it seems to be a valid pdf.The header checksum is not valid according to RFC 1950.
I don't know how Adobe Reader decompresses this block (object 4 0 in your file). Maybe it does not decompress it and ignores it instead.
I don't see a simple fix for this issue.
Maybe the CompatiblePdfReader workaround will help in this case:
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