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At Hacker Summer Camp 2019, EFF apparent our 10th-annual bound copy affiliate shirt—available alone during the three-day event, and aggressive by the DEF CON affair of Technology’s Promise: “a breach from the dystopian adumbration into a major-key, blue-sky thoughtscape, abounding of blush and light…a approaching area we accept beaten some of the added awkward problems that affliction us in the present, area technology supports and inspires instead of authoritative and surveilling.” We took cues from the DEF CON 27 Affair Guide, an illustrated ePub account anticipation exercises, media that aggressive the theme, and color/style breakdowns. The affair was heavily afflicted by the French banana artisan Moebius’ allotment advantaged Alice, a allotment that envisions “a approaching area tech lives up to our accomplished hopes.”
EFF’s shirt architecture is an admiration to Moebius, including artwork of a user in a agenda approaching area the downsides of technology accept been overcome. She’s got a aerial apparatus that is so able that it doesn’t crave her attention; she’s got a best laptop from the aboriginal 21st aeon that still works acknowledgment to the interoperability of her systems; she can acquaint freely, application ancient Morse code, acknowledgment to able encryption on all of her devices; and of course, she has the adeptness to change her beard blush at will.
As in antecedent years, we’ve included a abstruse addle congenital into the architecture of our absolute affiliate shirt as a appropriate acknowledgment for the clever, analytical EFFers who abutment our work. Apprehend on for a breakdown of the addle architecture and a walkthrough of the addle elements. Or, try to break it yourself! The addle can be begin at Media and will be accessible through September 30th. Afterwards the 30th, the addle can be begin on the Internet Archive’s Wayback Machine.
We accustomed a abstruse utopia in our shirt design, and acclimated alone one aphorism to actualize a fantasy apple map of this future: draw like Moebius. With this aphorism in mind, we wondered – what was beneath the clouds in the shirt design? Area would this user esplanade her aerial machine? We aggregate advertence abstracts to affect us, and advised Le Monde d’Edena to abduction Moebius’ audible architectural and mural style. We capital the fantasy map to draw players into the world, area they would get absent in the tiny paths and barrio of this abstract civilization, eventually award doors and hidden passages to the elements of the puzzle.
Printable adaptation of EFF’s DEF CON 27 addle map
Players admission the addle via the morse blank URL on the awning of the audacious user in our shirt architecture (. ..-. ..-. .-.-.- — .-. –. -..-. … …. .-.). Afterwards accession on the website, mousing over the map reveals aglow links in four altered locations. The belfry holds the final goal, which can alone be deciphered afterwards analytic the added three puzzles. We absitively to accomplish progression through the addle non-linear this year in adjustment to facilitate collaboration, and to accord solvers time to do added DEF CON activities in amid alive on the EFF puzzle.
The “first” addle can be begin by aerial over the access to the palace. The folio displays a knitting arrangement in blueprint form. Knitting was called as a affair due to the history of women application affiliate fabrics for “steganography”—to authority buried letters in times of war, decidedly Apple War I. We additionally capital to highlight accomplishment sets not generally represented in the cybersecurity space—someone accustomed with knitting can anon admit article amiss with this pattern. There are absolute rows of accessible circles, the attribute for a “yarn over” (skipping a stitch to actualize a hole), which doesn’t accomplish sense. Inspecting the arrangement reveals a hint, however: “the yarn overs are blanks”. Actuality are some examples of accepted patterns—you can analyze to see the difference.
If you aren’t accustomed with knitting, analytic “yarn over” and anecdotic the attribute is the aboriginal footfall to analytic this puzzle. The abutting is acquainted that the folio appellation “SOS” is hinting at added morse code. Looking at the image, there are three altered kinds of rows: all knits (blank squares), all purls (filled circles), and all yarn overs. We already apperceive that the yarn overs are blanks from the hint, so that agency aggravating the arrangement in two ways: one with the knits as dots, and one as dashes. The actual adjustment is converting knits to dots, which gives the morse blank cord “.– .- -. -.. . .-.” which translates to “wander”.
The abutting puzzle’s folio is a bequest to an earlier Internet era, and is amid at the docks tunnel. The folio contains (mostly) ASCII art, like the afterward attack that was acclimated in EFF’s EFFector mailings (if you haven’t active up to accept them, you can do so here):
There are a few altered means to analyze area the addle is on this page: acquainted that the whitespace is off in some of the images, such as the computer, or by demography a afterpiece attending at the characters in the pieces themselves. Looking at the appearance codes, the non-ASCII appearance U 2800, a braille space, can be begin in abode of a accepted ASCII amplitude 32. A adumbration in the folio reads: “the administration doesn’t matter”— clueing the solver into the abstraction that the adjustment of the braille spaces aural the art doesn’t authority the solution. Application a calligraphy to calculation the occurrences of U 2800 in anniversary art allotment gives the following: ”99 101 112 104 97 108 111 112 111 100”, which are ASCII codepoints for “cephalopod”.
If you’re curious, analysis out the calligraphy acclimated to encode the braille. You can calculation the characters with the afterward band of ruby, area the argument is a distinct allotment of art:
The third puzzle, begin in the access to the temple, consists of this image:
The aboriginal adumbration appear analytic this addle is in the URL: “5y2y6y” is “leetcode” for “syzygy”, which is a abnormality area abounding angelic bodies (at atomic three) are beeline in the aforementioned gravitational system. The image, befitting with the affair of exploration, shows an absurd arrangement of planets. The acknowledgment to the addle comes from the aboriginal cardinal of circling accomplish area the planets will all adjust beneath the arrow. There are a cardinal of means to acquisition this number. The cardinal is baby abundant that you can address a affairs to animal force the answer. Or, back the periods of the planets are almost prime, you can use the Chinese butt theorem. The aboriginal abounding syzygy of this all-embracing bureaucracy is at footfall 74800, or leetcode for “taboo”.
The aftermost puzzle, amid at the top of the tower, artlessly displays:
Inspecting the folio gives the adumbration “O(ne) T(rue) P(airing)”, a advertence to the one time pad cipher, a almost old bulletin encryption address that is difficult to able as continued as the key is random, as continued or best than the plaintext, never reused, and kept secret. A apparatus like this one can be acclimated to break the text, or the adventuresome can apprehend about one time pads and try their duke at advice it themselves. The key to this one time pad is “wandercephalopodtaboo”, a aggregate of the answers from the three added puzzles. Application this key to break the ciphertext translates it from “oerbslutpjenclprr” to “seeyouspacecowboy”, appearance the achievement of the puzzle!
The winners of this year’s addle are @aaronsteimle, @_pseudoku, and @0xCryptoK! Their aggregation associates additionally apparent our 2013, 2015, 2017, and 2018 DEF CON shirt puzzles.
Thank you to anybody who came by the berth to say hello, donated, and played through our puzzle! Creating this alternate art for our supporters is one of the highlights of our year, and we could not do it after you. If you’d like to abutment our work, accede acceptable a member—and don’t balloon to stop by the berth abutting year.
Until abutting time: “See you, amplitude cowboy.”
ENJOYED THE PUZZLE? SUPPORT EFF!
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