https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&user=131.156.236.149&feedformat=atomexplain xkcd - User contributions [en]2024-03-29T12:02:27ZUser contributionsMediaWiki 1.30.0https://www.explainxkcd.com/wiki/index.php?title=Talk:1190:_Time&diff=30950Talk:1190: Time2013-03-25T06:19:40Z<p>131.156.236.149: added comment</p>
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<div>Pretty sure we're just getting trolled with this one [[Special:Contributions/99.108.190.136|99.108.190.136]] 04:48, 25 March 2013 (UTC)<br />
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Can't tell if this is emo xkcd or trolling xkcd. [[User:Alpha|Alpha]] ([[User talk:Alpha|talk]]) 04:53, 25 March 2013 (UTC)<br />
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Something seems a little fishy because the image url is different than normal. [[User:Bugefun|Bugefun]] ([[User talk:Bugefun|talk]]) 04:55, 25 March 2013 (UTC)<br />
:Maybe the comic slowly changes throughout the day. [[User:Alpha|Alpha]] ([[User talk:Alpha|talk]]) 04:56, 25 March 2013 (UTC)<br />
::Oh god, it does. [[User:Alpha|Alpha]] ([[User talk:Alpha|talk]]) 04:57, 25 March 2013 (UTC)<br />
:::When uploading different versions of the image, use the naming convention time[iterationNumber].png. We'll compile all the images into one and display them as per [[Traffic Lights]]. '''[[User:Davidy22|<u>{{Color|purple|David}}<font color=green size=3px>y</font></u><font color=indigo size=4px>²²</font>]]'''[[User talk:Davidy22|<tt>[talk]</tt>]] 05:05, 25 March 2013 (UTC)<br />
::::Alright, so the comic appears to be switching between two states here: between [[media:time2.png|this]] and [[media:time3.png|this]]. If nothing new happens, I'll get to clipping the comics together. '''[[User:Davidy22|<u>{{Color|purple|David}}<font color=green size=3px>y</font></u><font color=indigo size=4px>²²</font>]]'''[[User talk:Davidy22|<tt>[talk]</tt>]] 05:28, 25 March 2013 (UTC)<br />
:::::Whoop, nope, [[media:time4.png|this]] just came up. Is there more to come? '''[[User:Davidy22|<u>{{Color|purple|David}}<font color=green size=3px>y</font></u><font color=indigo size=4px>²²</font>]]'''[[User talk:Davidy22|<tt>[talk]</tt>]] 05:34, 25 March 2013 (UTC)<br />
::::::Alright, so a new one is posted every half-hour. Whoopee. '''[[User:Davidy22|<u>{{Color|purple|David}}<font color=green size=3px>y</font></u><font color=indigo size=4px>²²</font>]]'''[[User talk:Davidy22|<tt>[talk]</tt>]] 06:06, 25 March 2013 (UTC)<br />
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[[Special:Contributions/72.21.198.66|72.21.198.66]] 05:11, 25 March 2013 (UTC)It could be a reference to the old proverb " time and tide wait for none" Cueball and the girl could be waiting for the tide in the beach! (Just a guess)[[Special:Contributions/72.21.198.66|72.21.198.66]] 05:11, 25 March 2013 (UTC)<br />
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The picture does chance with time. The URL includes a changing timestamp that I can't decipher. Compare these two URLS (which have slightly different images:<br />
http://imgs.xkcd.com/comics/time/8eb156cce408df8bb83528382d6a2aa2ce6c74f3c573fd12b058cd1c56420672.png<br />
http://imgs.xkcd.com/comics/time/1e349a579b5f9b5ed487ddf7e88244b70330941ddedac9c6abf6ed2e3f589b97.png<br />
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Perhaps there is a way to hack the URL to view future images. [[Special:Contributions/199.30.248.121|199.30.248.121]] 05:29, 25 March 2013 (UTC)<br />
: I would also like to add that knowing randall, these are not the only images. For all we know, the image will still be changing in 5 years while a tree grows in front of them. My point is: Are the URLs hackable, or did he encrypt them? [[Special:Contributions/199.30.248.121|199.30.248.121]] 05:33, 25 March 2013 (UTC)<br />
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Likely there is a way to hack the URLs; they look like some sort of hash, probably a hashed timestamp. Of course, he could easily have added some salt to the hash, making it significantly *harder* to hack. But they're strings of a specific length, so it should be pretty easy to bruteforce it, fetch all the images, and then (maybe) reverse-engineer the sequence. *That* all depends on how many of them there are. [[Special:Contributions/76.90.249.178|76.90.249.178]] 05:44, 25 March 2013 (UTC)<br />
:Good god, do you see how many digits are *in* that hash? The sun'll have burned out by the time we've tested every possible combination of digits. '''[[User:Davidy22|<u>{{Color|purple|David}}<font color=green size=3px>y</font></u><font color=indigo size=4px>²²</font>]]'''[[User talk:Davidy22|<tt>[talk]</tt>]] 05:47, 25 March 2013 (UTC)<br />
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It seems that the image is updated every 1/2 hour. [[Special:Contributions/152.23.97.150|152.23.97.150]] 06:17, 25 March 2013 (UTC)<br />
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Hash appears to be SHA-256. I tried some obvious hashes ("1", "11901", "1190_1", "1190.1") to no avail. Maybe this is HMAC-SHA256? Also, I would suggest trying Unix timestamps. [[Special:Contributions/131.156.236.149|131.156.236.149]] 06:19, 25 March 2013 (UTC)</div>131.156.236.149