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About SethB

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    Noble Psychomaster


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    3368 8329 0837 3782
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    Menomonie, WI
  • Occupation
    Professor of Computer Science
  • Biography
    I'm a father, a husband, a teacher, a researcher, a gamer, a mechanic, a handyman, a cook, a cleaner ... in no particular order.
  1. Still beats trying to decode a QR by hand!! Nice little treat!
  2. Yeah I'm just looking for a Zelda ROM now, the video is kind of a parody of 80s Nintendo ads in general, but the rap seems like a specific nod to original Zelda I had this sense of DejaVu the entire trailer but hadn't put my finger on it. I had forgotten about that commercial! Lol! It's nice to be reminded about the humor of NOA, especially after that totally insane Nintendo Direct yesterday for Tomagotchi Life. They may have lost their touch a bit.
  3. Looks like IPS files are commonly used to patch emulator ROMs. A simple google produces tons of small tools an tutorials for applying them to GBA/SNES roms and the like. Question is, which rom? The cart in the video looks kinda like NES zelda. Maybe …
  4. Hmmm, what could this be at the end of the YouTube video description:
  5. The soundtrack for the documentary (not the game) was just released this morning! It comes to us from the fantastic Terence Lee (aka Lifeformed) part of the Hitbox Team and composer for the game Dustforce. It packs a whopping 27 tracks more than a few of which will be giving you a profound sense of Deja Vu. Check it out: http://lifeformed.bandcamp.com
  6. I've always wanted to delve further into compression techniques. What a cool little transform. Had not heard of it. The stuff of pure computer science! I'll have to see if I can make a project out of that sometime for my students! (with credit due to the creator of course) Here's my own little program to reverse it I was busy writing when you totally spoiled it by posting the result :-P http://pastebin.com/yRwLGkaf Seth B.
  7. I'm duplicating a lot of work here but I'm mostly just playing catchup (only got into this today). Here's the frequencies charted. I think your right that it's not substituted, just scrambled.
  8. It's fun to put pieces of it into anagram-solver.net (like here)! There's so many letters in there that when you allow partial matches you can get just about anything. My personal favorite so far: :-O
  9. I'm a visual person so here it is transposed (so you don't have to read it top to bottom … er … bottom to top). Two things strike me. The '$' is in the exact same place in this arrangement. There's lots of terminating periods at the end of the first few lines (the first 8): S L A E R R . . D H . T E Z U I . L T E . . G . G E F D S W A . M V N T H Z O I L N T S . O G . G S F N Y . . H L D N T V B . I N . T I S . S . C M E E E R M H B T N T H . O A F Y G I O Y B . S D S E G F . L D G N W N E E O S H U L U E A . N E A S U H . W V S O W T . . A S . O A I . J . T T E Y E W . H R Y N T T O . . I M U I A I O . S N E E R W I K T M N T T I O O I C U N A A O . S O E Y R E I H H N E T . P E A . C E W S A B O S E N T E . E N F . A T H B E A P R E I A A P E F D T G . H . M B O A T . . O A W A . I S . P M E R E E O H S L T O A T D . O A . U . U U . A L E T T D M M S H B O A P D B U T . . E S E . A M S S E N M R N R E . O . . E A T C . O N I . O B R O O R M M E N E . I . . A O S L . O N U . O A W O N L . C E K R . I G R A O D . . O . N X O H O O E R M H E S H N . G W N O G I E O L S . A . T T Y I C H E V E . T . . R O S F E R . I . A . O S R I . H I R R . W F I I . T E E U . . . E A S T T E . F A L V . . F A . O T V L K E . O . N O G G T . W R R D S . L L . I T F E A O $ F . Z Y E D E E W N H H N . W L . I L F A A O . T . Z G R T S G . N W L S T . U R O . F E E A . F . U L O Y T R . . V D R T . A R I . P O Y U . . L U
  10. You guys have found some real telling clues I think! I'm coming at this from another angle right now: the font. It's Share Tech, not in and of itself weird or unusual, but what is unusual (or at least odd when you look at the page source) is the way it's included in the CSS. It's in there in about 3 different formats (embedded OpenType, TrueType and SVG) and these are just links to normal files on Tumblr's server (all very normal). However, there's a fourth version, WOFF (web open font format). For some reason the data for this font is embedded right in the CSS. A huge chunk of utf-8, base-64 encoded data. The question on my mind is why? Why not just link to an external file like the others? It's also inside of the URL field of this particular CSS font-face but it's clearly not a URL. I'm no CSS guru so maybe this is not unusual. But it strikes me as odd. I scanned a few other tumblr pages to see any evidence that this is normal for tumblr but nothing similar is there. I tried decoding the data and it at least starts with the right magic number for a WO font ('wOFF') but I didn't get much further than that. http://pastebin.com/AfNYZUsJ It may be a red-herring but it seems like things could benefit from a fresh perspective here anyways! UPDATE: Also worth noting, this is something they have control over. Check out the 'how to upload' section of this page http://codehelp.tumblr.com/fonts UPDATE: I decoded the data with 'recode' and then converted the resulting file to a ttf using woff2snft (http://people.mozilla.org/~jkew/woff/) then opened up the font table with TTFEdit and nothing looks weird. Just a normal spline font. Boo. That would be a fun way to provide a substitution cipher (a font file with the glyph table scrambled). But substitution ciphers are too easy to decrypt anyways I suppose. Seth B.
  11. Spiteful, passive-aggressive posts representing minority opinion: 1 Unnecessary use of color in posts: 5 ... wait I mean 6 ... sweet honeybee of infinity!!
  12. The following youtube video shows how to decode one by hand. There's plenty of room for mistakes (especially with the de-masking part) but the one brilliant thing I took from the video was using MS Excel and setting the background color of cells as a nice way to play with a QR code. This video plus the images posted earlier in the thread from Wikipedia do a good job of explaining the structure of a QR code. I went through the hand decoding process twice before I finally got the right answer. Once I had done that I was able to monkey with the unknown parts of the QR code to make it readable by a scanner (like zxing). My favorite phone based scanner is NeoReader and that one was able to decode it too (once I had the first 12 bits fixed).
  13. GOT IT!!! Finally. I just gave in and started decoding it by hand. Realized, despite the unknowns in the 'len' section of the QR, only one possibility gives you a reasonable and valid value. Fill that one bit in and the consequences from it in the nonogram finally gives you a readable QR. Brilliant puzzle I must say!
  14. Ahh, okay. Of course that's a key part where the nonogram is ambiguous. Thanks for the tip!
  15. AHHH! That will help. Thank you. I think I will get cozy with an auto nonogram solver and see if it can help weed out those problems. It's clear that even a few squares being wrong can botch the whole QR code. Thanks! Seth B.
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