To make the data the *same* should still require massive trial and error or intense math, if the checksum is done correctly.https://twitter.com/marcan42/status/835131758702030850 …
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Didn't say I didn't believe you. Just that it seems weird that a poor design lasted this long/how long has it been abused?
I'm not sure why you think this is poor design. It's a requirement of pretty much every hash, in order to be streamable.
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Streamable PDF?
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Streamable hash. Or are you talking about the bit where you can make two PDFs look different if only a few bytes change?
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Didn't think I could hate that garbage collection that is the PDF any more than I did.
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This isn't really a consequence of bad design. You can play tricks like this with pretty much every complex file format.
End of conversation
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