Harry Lee / harrier

@harrier_lcc

Barely living in an insane world HKer / CTF / Rustacean / Cryptography / JPOP / ... Black Bauhinia () CTF (mostly crypto/misc proglang) player

香港
Vrijeme pridruživanja: ožujak 2015.

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  1. proslijedio/la je Tweet
    2. velj

    I am starting a blog. First post is about the StarkWare Hash Challenge

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  2. proslijedio/la je Tweet
    31. sij

    I retweeted this post yesterday, but I urge people who care about encryption online to read it, because this legislation should scare you. I am going to follow with a (much less thorough and accurate) summary thread below.

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  3. proslijedio/la je Tweet
    31. sij

    , , and I are starting a new security blog. In our first write-up, we will discuss the impact of "SameSite by default" and how it affects web app sec. Feel free to request future topics you would like us to cover.

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  4. proslijedio/la je Tweet
    27. sij

    New cache attack against Intel CPUs:

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  5. proslijedio/la je Tweet
    15. sij
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    > Certificates with named elliptic curves, […], can be ruled benign. […] Certificates with explicitly-defined parameters […] which fully-match those of a standard curve can similarly be ruled benign. So it's a vulnerability in ECDSA verification of custom curves.

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  7. proslijedio/la je Tweet
    10. sij
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  8. proslijedio/la je Tweet
    9. sij

    IMSI catchers (fake cellphone towers). with

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  9. proslijedio/la je Tweet
    9. sij

    Announcing BLAKE3! 🥳 * Faster than MD5, SHA-1, SHA-2, SHA-3, and BLAKE2 * Merkle tree: unlimited parallelism, verified streaming * Builtin MAC, KDF, XOF * One algorithm, no variants * Rust crate: Try it: cargo install b3sum

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  11. proslijedio/la je Tweet
    7. sij

    As promised a few months ago, with we computed a chosen-prefix collision for SHA-1 for much cheaper than 100k$. Application example with impersonation on PGP Web-of-trust. website: paper:

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  12. proslijedio/la je Tweet
    6. sij
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    6. sij
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  14. proslijedio/la je Tweet
    5. sij

    Competition: help advance cryptology and make it faster to verify signatures on really big messages, win a $1000 prize paid out of my own pocket.

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    30. pro 2019.

    [New] Too much crypto (Jean-Philippe Aumasson)

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  16. proslijedio/la je Tweet
    22. pro 2019.

    CTF Reversing challenge bingo

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  17. proslijedio/la je Tweet
    23. pro 2019.
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  18. proslijedio/la je Tweet

    Do you use a VPN for privacy? Here's what you should know: –There's no way you or anyone else can tell if the VPN provider is selling your data. –If a VPN provider _doesn't_ sell your data, it will be outcompeted by those that do, and go out of business. It's a market for lemons.

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  20. proslijedio/la je Tweet
    19. pro 2019.

    I have two comments on this new Signal proposal for backing up secrets: 1. If your solution to a hard problem is “use Intel SGX”, please say so right at the beginning! 2. Despite that criticism, holy cow does this look like sophisticated work.

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