Countdown in header text/images

Go to bottom picture

Explanation

• Here are (work in process) all the images from xkcd used in the Countdown in header text.
  • The images can also be found here, on munvoseli's page.
• The images have been numbered here on explain xkcd and the number is a link to the image in the count-wimRikmef folder on xkcd.com:
  • https://xkcd.com/count-wimRikmef/imgs/
  • Each picture's filename is the SHA256 hash of the image itself, so it is impossible to predict future file names:
    • Here the name for the first picture: ac84f99b9c41eb75e1a595ea74c7bccf48f36c345d8b88ad5dd478d4520bc0b2.png
    • https://xkcd.com/count-wimRikmef/imgs/ac84f99b9c41eb75e1a595ea74c7bccf48f36c345d8b88ad5dd478d4520bc0b2.png
• Attempting to brute-force future files, assuming you could test 1 trillion file names per second, would take 200,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 times the age of the universe.
  • When I first looked at it and decided it was an obvious hash (yes SHA256 sounds about right, but nice to know someone's tried it) I personally had hoped it would be a hash of the datetime (plus a salt, maybe, to give it that extra little frisson of difficulty in reverse engineering... ;) ). But if it's as you say I think I'll refrain from getting any rainbow-tables set up and bashing through the possibilities in the rather huge phase-space it could represent. Of course, there must be a look-up table used by the server. It'd be too much to hope for that it's publically exposed though, and totally a rookie-error if it is. (That Randall, and maybe anyone he actually drafted in to implement it to save himself the worry, is surely not going to commit.) 172.70.85.73 03:32, 13 January 2022 (UTC)

Images

• 0001:
• 0002:
• 0003:
• 0004:
• 0005:
• 0006:
• 0007:
• 0008:
• 0009:
• 0010:
• 0011:
• 0012:
• 0013:

Go to bottom

• Just an easy fix making it easy to jump to the newest image here at the bottom of a potentially very long list of pictures.