JPEG FTW. Note how the complexity of the PDF and JPEG standards allow the collision to take place. You can't do this with DOCX, XLSX, etc.https://twitter.com/marcan42/status/835175023425966080 …
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good point re news. I’d guess
@marcan42 is right on the uncomp blocks. Can test in May when the Shattered PoC is out
Shattered PoC isn't going to help you here unless you have $100k to burn on Amazon. PDF-wise we already know the story.
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But you can try to construct a pseudo-collision template for PK/OOXML now if you want (just add $100k to make it real)
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It's not completely trivial though, e.g. there are data CRCs and you can't collide CRCs (math works against you here)
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