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hugohanoi's profile
Hugo Nguyen
Hugo Nguyen
Hugo Nguyen
@hugohanoi

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Hugo Nguyen

@hugohanoi

I chain, therefore I am ⛓️

Joined April 2012

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    1. Hugo Nguyen‏ @hugohanoi Apr 15

      Hugo Nguyen Retweeted Ari Paul

      It seems people confuse the “public security” aspect of Bitcoin (ledger integrity protected by PoW) with the “private security” aspect of Bitcoin (safe ownership of coins protected by ECDSA). Signatures are only relevant to private security.https://twitter.com/aridavidpaul/status/985536073668456448 …

      Hugo Nguyen added,

      Ari PaulVerified account @AriDavidPaul
      Replying to @tdryja @RayahMajor
      Why? PoW only has any relevance at all within the context of adding txs to a block with verified signatures. PoW without signatures literally has no value - deadweight loss...wouldn’t exist.
      2 replies 5 retweets 18 likes
      Show this thread
    2. Hugo Nguyen‏ @hugohanoi Apr 15

      Also worth repeating is that the security of ECDSA / public-key cryptography in general is *relative*. It is only secure from the POV of the owner of the private key. By forcefully switching roles cost of attack can be significantly smaller than brute-forcing the key.

      2 replies 0 retweets 2 likes
      Show this thread
      Hugo Nguyen‏ @hugohanoi Apr 15

      This is also another fundamental issue with PoS: it relies on private security to protect the ledger, a public good. The network is secure so long as the private keys of the large stake holders are secure.

      10:45 AM - 15 Apr 2018
      • 4 Retweets
      • 18 Likes
      • Tyler Nieman Johnathan Corgan Blockchainology Stadicus Daliso Tommy Grumbles Steve Kong vicen
      3 replies 4 retweets 18 likes
        1. Hugo Nguyen‏ @hugohanoi Apr 15

          Drastic change of coin ownership, change of staking participation & low rate of staking participation could have serious consequences for PoS protocols. I discussed this at length my PoS part 2 article.https://medium.com/@hugonguyen/proof-of-stake-private-keys-attacks-and-unforgeable-costliness-the-unsung-hero-5caca70b01cb#---0-560 …

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        2. Ari Paul‏Verified account @AriDavidPaul Apr 15
          Replying to @hugohanoi

          And PoW suffers from the inverse. Private keys are cryptographically secured. ASIC farms aren't. State level actors that see the ledger as a public nuisance rather than public good can attack it without having to undermine private key ownership.

          1 reply 2 retweets 7 likes
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        2. Dan Robinson‏ @danrobinson Apr 15
          Replying to @hugohanoi @TokenHash

          PoW is only as secure as the large ASIC farms... and if a large staker ever did get hacked, it would be slashed. An insecure ASIC farm could be compromised again and again, and doesn’t even have that much incentive to prevent it

          1 reply 0 retweets 1 like
        3. xcsler_returns‏ @xcsler Apr 16
          Replying to @danrobinson @hugohanoi @TokenHash

          Isn't loss of profits an incentive to prevent it?

          1 reply 0 retweets 1 like
        4. Dan Robinson‏ @danrobinson Apr 16
          Replying to @xcsler @hugohanoi @TokenHash

          A relatively modest one, compared to how much a staker would get slashed for a major violation. And if someone used the ASIC farm as part of a successful 51% attack it could actually be profitable

          0 replies 0 retweets 0 likes
        5. End of conversation

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