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20:51:41<fireonlive>https://forum.rclone.org/t/internet-archive-md5-tag-in-id-files-xml-interpreted-incorrectly/31922
20:52:13<fireonlive>>... the md5 tag in the [id]_files.xml entry in [id]_files.xml ... as suggested by the presence of <summation>md5</summation>, is "generated by hashing a concatenated string of all the filenames and their md5 strings" (according to Jonah from the Internet Archive).
20:52:16<fireonlive>TIL
20:55:10<fireonlive>https://github.com/rclone/rclone/issues/6321#issuecomment-1510501880
20:55:11<fireonlive>oh hm
21:02:42<@JAA>Huh
21:03:26<@JAA>I had been wondering what that value was given that, you know...
21:03:53<@JAA>Although constructing a file that contains its own MD5 would be fun.
21:04:08<@JAA>(I have no idea whether it's been done before.)
21:08:21<fireonlive>hmmm... i think it has in images
21:08:41<@JAA>Actually, it's trivial: write out a superpermutation of 32-char hex digits. Done.
21:08:55<@JAA>* Storage space for the file sold separately.
21:30:38<Flashfire42>https://www.bleepingcomputer.com/news/security/this-image-shows-its-own-md5-checksum-and-its-kind-of-a-big-deal/ JAA
21:31:16<@JAA>Yeah, I've seen that one before. It requires a lot of extra stuff to make it work.
21:31:36<@JAA>And it doesn't literally contain its own MD5, but close enough.
21:41:32<Barto>echo -n 'The SHA256 for this sentence begins with: c, seven, e, seven, c, two, eight and three.' | sha256sum :-)
21:59:03<katia>https://ih1.redbubble.net/image.711850009.8988/flat,750x,075,f-pad,750x1000,f8f8f8.u4.jpg
22:04:40<katia>https://github.com/joelparkerhenderson/sha256-sentence
22:08:11<Barto>i had done it with python though, took 5 hours of single threaded runtime at 4Ghz on my good old intel haswell cpu
22:46:24<@JAA>Yeah, a prefix isn't that hard.
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