ID string in final PDF vs. same PDF checksum for same inputs

Quirin Scheitle <[email protected]>
Newsgroups gmane.comp.tex.pdftex
Message-ID <[email protected]> 
Dear PdfTEX Developers,

I am currently trying to create PDFs with the same checksum for the same inputs.

Apparently [1, own tests] the “ID” string in the PDF avoids this. 

Is there any way to, e.g., set this string to a constant value or leave it out?

Thank you, Kind regards
Quirin



[1] http://tex.stackexchange.com/questions/5401/how-to-prevent-different-checksums-for-different-typesets
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