Justin Troutman

@justintroutman

Bearded cryptographer. Southern drawl. Streetballer. Disinformation researcher. Making tradecraft game @ . 4x dad. Erdős-Bacon #5.

San Ramon, CA / Uberlândia, MG
Vrijeme pridruživanja: ožujak 2009.

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  1. Prikvačeni tweet
    20. stu 2019.

    My 2020: Helping K12 educators integrate big topics, like cryptography, social engineering, elections integrity, and misinformation campaigns, via espressionage () and its flagship design, banburismus (), a tradecraft adventure game.

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  2. 3. velj

    While humankind, and burial, has been around far, far longer than cryptography, there's a striking parallel between them and one that begs for better storytelling. The deep, the dark, the hidden; it's a place of value and reverence. Time and space take on new meanings.

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  3. 3. velj

    As I continue my journey through 's incomparably superb "Underland: A Deep Time Journey," I've started looking at cryptography through the lens of deep time and space, and mythology, in "The Cryptographic Tale of Ariadne's Thread."

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  4. 1. velj

    You know you're a parent when you read this and the heart palpitations hit and a little bit of your coffee goes down the wrong pipe. 2020, gimme a minute! Good Lord.

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  5. 31. sij

    Just got a pair of Air Max 270 React for my daily walk-commute in SF. Super nice thus far. Who else do I know really into footwear? Or, if you're not, what are you really into that's miles away from your career, but that you could happily make your career? 2/2

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  6. 31. sij

    Little trivia tidbit about me: If I hadn't gotten so into security, privacy, and cryptography, I might have designed performance sneakers -- more specifically, basketball kicks. I'm fascinated with cushioning systems and their chemistry. 1/2

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  7. 30. sij

    Can YOU jam with the console cowboys in cyberspace?

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  8. 29. sij

    Until I return to the surface to share my reflections in the coming week, I highly implore you to start your own journey within this book. But, as a hero of mine () always says: Don't take my word for it. Go. Read. What are you waiting for?

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  9. 29. sij

    I'll be writing more about how it has impacted the way I view one of my greatest passions, and the biggest portion of my career -- cryptography -- and how it captures this hidden slow dance between civilization and time that quietly networks all the points of our existence.

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  10. 29. sij

    It just might be one of the greatest books I've ever read, and I've only just begun. It's Underland, by , and it's already shaping up to be a wonder of the book world. After my first 18 pages, I could muster only a "Damn." I've virtually spelunked into its depths.

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  11. 29. sij

    ...I took a different path. I realized that my soul was thirsty for something a bit more dialed back than the world I know. Something a bit more primal, and existential. I've since started what you might call a book about nature, and philosophy, and time, and the human condition.

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  12. 29. sij

    [Thread] In 2020, one of my goals is to read more; this is for my own evolution, as well as for my daughters to see their dad reading alongside them. I originally set out to read science fiction, or perhaps something relevant to the Silicon Valley hyperspace I work in, but...

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  13. 29. sij

    Maybe you have some quick thoughts on this, ?

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  14. 28. sij

    Maybe part of this answer lies in diffusion switching mechanisms for more active S-boxes.

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  15. 28. sij

    Fully understanding that it makes analysis clunkier, and we've still been able to exploit these characteristics for heterogenous designs in the past (e.g., CLEFIA).

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  16. 28. sij

    What's the state of the art in heterogenous Feistel design? (I'm mostly curious about quantifiable security where you have multiple halves as input to different round functions, and how that impacts the propagation of characteristics when compared with an SPN.)

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  17. 28. sij

    How I'm using Joyce Byers' Christmas lights-based Upside Down messenger as a plugboard to S-boxes, and introducing new tweaks ("butter" and "syrup") to the lexicon. Such strange; much things.

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  18. 28. sij

    [Addendum] Waffleleven shares some characteristics with the late 80s Soviet block cipher, GOST, which -- I kid you not -- rotates the results of its S-box output to the left, ELEVEN TIMES.

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  19. 28. sij

    Actually, we'll call this tweet "tweet 11, season 2". I think Robin, having cracked the Soviet code last season, is well-equipped to use this cipher in season 4 of . And I, like the Duffer brothers, hail from North Carolina, so. Hi, ! </thread>

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  20. 28. sij

    There are variants to this design (including a MAC), which I'll eventually share in a paper on bantamweight primitives for the classroom. This is tweet 11, so it feels like a good stopping point for now. 11/n

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  21. 28. sij

    Once both 16-char halves have gone through their respective round functions, they, much like two waffles, are stacked onto each other, in one 32-char composite, with plenty of butter and syrup. 10/n

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