Josh Baron

@JoshuaWBaron

Program manager . Interested in cryptography, privacy, anonymity & cybersecurity. Formerly . All opinions are mine alone. he/him

RTs ≠ endorsements
Vrijeme pridruživanja: travanj 2016.

Medijski sadržaj

  1. 27. sij
  2. 9. sij

    Interesting, Orange is presenting at on a scheme for doing anonymous NFC functionality to access public transportation... but it relies on a variant of the q-SDH assumption in the generic bilear group model 🤷‍♂️ ()

  3. 9. sij
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  4. 9. sij

    Always exciting when advanced cryptographic primitives like this become practical (not <yet> in the main Mozilla browser, it’s still in prototype)

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  5. 9. sij

    Super excited about this talk about privacy-preserving Mozilla browser telemetry! It was supported in part by the Safeware program

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  6. 9. sij

    Boy this is one of those slides that may, *or may not*, have a good shelf life. (Referring to attacks on symmetric key primitives)

  7. 9. sij

    “Tailored Plonk” was the name of my high school band

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  8. 9. sij

    Their hash functions are *really* small (in terms of R1CS size) vs even Pedersen hash

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  9. 9. sij

    What follows was a description how their new hash has fewer S-Box operations because the degree of the polynomial (thinking about this as an arithmetic circuit) is the same... so who needs more of them 🤷‍♂️ (huh)

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  10. 9. sij

    Want to use more finite field-type hashes (like Pedersen commitment based) because R1CS is basically field arithmetic so it’s much more compactly representable (versus SHA which is more intuitively describable as a Boolean circuit)

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  11. 9. sij

    ZCash v1.0 took 45 seconds just for a SHA-2 use (within the ZK proof statement)

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  12. 9. sij

    Next talk! Building new hash functions for zero knowledge. Why do we need different ones? Because SHA has a giant circuit/R1CS description and they want smaller ones for protocol efficiency

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  13. 9. sij

    Now we’re talking about a service to find things like devices of your friends. Can’t imagine what the privacy issues with that would be 🙃 (*whispers* sometimes it’s the computation itself that is privacy-leaking)

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  14. 9. sij
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  15. 9. sij

    Two of the *best* documented are the (DARPA-funded!) SCALE-MAMBA and Sharemind.

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  16. 9. sij

    Holy cow in the last 7 months alone, there have *seven* new frameworks

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  17. 9. sij

    Comparing MPC frameworks be like

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  18. 9. sij

    Here’s an overview of the different frameworks- a number of these are (or have been) DARPA-funded, most notable SCALE-MAMBA and Sharemind

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  19. 9. sij

    It’s almost time for the multiparty computation session at and I’m super excited to see new examples of practical applications

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  20. 8. sij

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