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Snowden's profile
Edward Snowden
Edward Snowden
Edward Snowden
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@Snowden

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Edward SnowdenVerified account

@Snowden

I used to work for the government. Now I work for the public. President at @FreedomofPress.

freedom.press
Joined December 2014

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    1. Edward Snowden‏Verified account @Snowden 19 Dec 2017

      Edward Snowden Retweeted Robert Hackett

      I'm with Vitalik. (https://twitter.com/Snowden/status/913544739542241282 …) Zero-knowledge proofs may be the future of private trade.https://twitter.com/rhhackett/status/942799687844851713 …

      Edward Snowden added,

      Robert HackettVerified account @rhhackett
      For the new story, @VitalikButerin told me he believes that zk-SNARKs, the tech that Zcash is built on, “are the single most under-hyped thing in cryptography right now.” High praise. pic.twitter.com/TKAQahF2Dz
      Show this thread
      98 replies 876 retweets 2,173 likes
      Show this thread
    2. Peter Sterne‏Verified account @petersterne 19 Dec 2017
      Replying to @Snowden

      Are you concerned about the possibility of zcash's trusted setup being compromised?

      1 reply 1 retweet 11 likes
      Edward Snowden‏Verified account @Snowden 19 Dec 2017
      Replying to @petersterne

      Due to the design of the ceremony, the chance of every single participant (many known, respected, publicly identified figures) in the ceremony being compromised (which is the only way to cause harm) is close to zero. An undetected flaw in the novel cryptography is more realistic.

      9:29 AM - 19 Dec 2017
      • 5 Retweets
      • 44 Likes
      • A Joe Brendan Wintermute Jason Civalleri Bob Summerwill kill time Maxime Quandalle L. Amber O'Hearn $trangechange
      11 replies 5 retweets 44 likes
        1. New conversation
        2. Edward Snowden‏Verified account @Snowden 19 Dec 2017
          Replying to @Snowden @petersterne

          The only way I can see the initial ceremony having been compromised is by a bad build distributed to all participants. But this is hard to pull off in the first place, and participants kept copies of the build on write-once media, providing for an audit trail.

          5 replies 2 retweets 18 likes
        3. Lawrence Nahum‏ @LarryBitcoin 19 Dec 2017
          Replying to @Snowden @petersterne

          @petertoddbtc, one of the participants, finds it very hard to reproduce the binary builds (non deterministic) - at least if I understood correctly - thus making it very hard, I suppose, to verify. What am I missing?

          4 replies 1 retweet 16 likes
        4. zooko‏ @zooko 19 Dec 2017
          Replying to @LarryBitcoin @Snowden and

          All such binaries are hard to verify/audit. The binaries from the first Zcash Ceremony are slightly less hard than most software.

          1 reply 1 retweet 4 likes
        5. Peter Todd‏ @peterktodd 19 Dec 2017
          Replying to @zooko @LarryBitcoin and

          If all such binaries are "hard to verify/audit", why claim the trusted setup was a multi-party computation?

          2 replies 1 retweet 11 likes
        6. Patrick McCorry  ☘️‏ @paddykcl 19 Dec 2017
          Replying to @peterktodd @petertoddbtc and

          🙄🙄🙄🙄🙄🙄🙄🙄🙄🙄🙄🙄pic.twitter.com/ByYUw3tPSN

          1 reply 1 retweet 5 likes
        7. Patrick McCorry  ☘️‏ @paddykcl 19 Dec 2017
          Replying to @paddykcl @petertoddbtc and

          Throughout the ceremony; did you have access to anyone else's secret values? No. This is why it is called multi-party computation.

          2 replies 0 retweets 5 likes
        8. Peter Todd‏ @peterktodd 19 Dec 2017
          Replying to @paddykcl @paddyucl and

          If the program running the computation is compromised - e.g. via a broken RNG - there is only one actual party to the computation. That is precisely the type of exploit we're worried about.

          0 replies 0 retweets 6 likes
        9. End of conversation
        1. Maybe Not‏ @gorilla_psyops 20 Dec 2017
          Replying to @Snowden @petersterne

          This is why you should also take a look at Zcoin $XZC, which is similar in functionality to Zcash (admittedly more cumbersome, without the ability to hide amounts), but based on RSA accumulators instead of zk-SNARKs and thus much less likely to have any fatal flaw.

          0 replies 0 retweets 1 like
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        1. GF‏ @GalacticFlotsam 19 Dec 2017
          Replying to @Snowden @petersterne

          The Ceremony via @Radiolabhttp://www.radiolab.org/story/ceremony/ 

          0 replies 1 retweet 0 likes
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        1. mine Zcash ᙇ 🔩‏ @mineZcash 19 Dec 2017
          Replying to @Snowden @petersterne

          Also keep in mind @Snowden that _if_ the Trusted Setup were compromised it would not risk the privacy of Zcash users but would allow an attacker to forge coins by false verification: https://z.cash/support/faq.html …https://www.zcashcommunity.com/2017/07/31/zcash-separating-fact-fiction/ …

          0 replies 0 retweets 1 like
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        1. MinisterOfPropaganda‏ @snakecharmr1024 20 Dec 2017
          Replying to @Snowden @petersterne

          How do you estimate the probability of a compromise when it's exploitation is *by definition* undetectable and the incentive to use it is enormous? Ceremonies are magic rituals. Very powerful, but not cryptographic proof.

          0 replies 0 retweets 0 likes
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        1. Cameron Ruggles‏ @CameronRuggles 19 Dec 2017
          Replying to @Snowden @petersterne

          Yeah, Monero uses older zero knowledge (ring signatures) to provide its privacy. Less risky in that regard.

          0 replies 0 retweets 0 likes
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        1. tficharmers  ⛄️‏ @tficharmers 19 Dec 2017
          Replying to @Snowden @petersterne

          pic.twitter.com/oQLJpe4ifV

          0 replies 0 retweets 0 likes
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        1. binaryFate‏ @binaryFate01 19 Dec 2017
          Replying to @Snowden @petersterne

          "many known, respected, publicly identified figures" Wut?... oO There was only 6 individuals, *5 of them directly related to the zcash company*. Even using the word "many" sounds like a stretch.

          0 replies 0 retweets 0 likes
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        1. Seccour‏ @Seccour_FR 19 Dec 2017
          Replying to @Snowden @petersterne

          Do you own any Zcash ?

          0 replies 0 retweets 0 likes
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        1. 雪山飞熊‏ @suanniunaii 19 Dec 2017
          Replying to @Snowden @petersterne

          thanks for your advice

          0 replies 0 retweets 0 likes
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        1. CryptoGraphic‏ @plz_ignore_this 19 Dec 2017
          Replying to @Snowden @petersterne

          As we approach simply ridiculous valuations of crypto currency, state sponsored quantum computing may be a serious threat to current cryptography Also, it will likely become a very serious target of organised crime The Korean @YobitExchange for examplehttps://cryptovest.com/news/another-bitcoin-exchange-hacked-youbit-files-bankruptcy-after-losing-users-coins/ …

          0 replies 0 retweets 0 likes
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