Hmm. I hope this can't be easily used to attack git repositories' integrity. Has git got any plans to upgrade from SHA1?
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The published collision cannot be used to attack Git because Git prefixes blobs with a header.
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well done :)
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Was waiting for someone to do that :) So many people on reddit mistakenly thinking you need a new collision per PDF.
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cool. waiting for github repo
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Using grayscale JPEGs without updating 7 0 obj doesn't play well with most viewers.
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convert them to RGB - or use /DeviceGray ;)
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Interestingly, the first pdf seems to be corrupt in Adobe PDF reader, but not others.
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When I saw this on HN, I thought about your kind of hacks first :) Congrats, that's a smart escalation.
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