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tqbf's profile
Thoma§ H. Ptacek
Thoma§ H. Ptacek
Thoma§ H. Ptacek
@tqbf

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Thoma§ H. Ptacek

@tqbf

Full of passionate intensity.

✶ ✶ ✶ ✶
sockpuppet.org/me
Joined October 2007

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    1. Thoma§ H. Ptacek‏ @tqbf 31 Mar 2018

      Thoma§ H. Ptacek Retweeted Jeremiah Blatz

      gulphttps://twitter.com/jeremiahblatz/status/980133900193234944 …

      Thoma§ H. Ptacek added,

      Jeremiah Blatz @jeremiahblatz
      Replying to @tqbf
      I haven't directly donated to an election campaign... ever? But, you know, it's time. I just made up for some lost time with The Great Slate. https://secure.actblue.com/donate/great_slate … pic.twitter.com/whFAZ9I1dG
      1 reply 1 retweet 26 likes
      Show this thread
    2. Thoma§ H. Ptacek‏ @tqbf 31 Mar 2018

      Let’s do some math: that plus $410 plus an anonymous $200 on Slack plus $100 spillover from last challenge unlocks 4 challenges.

      1 reply 1 retweet 11 likes
      Show this thread
    3. Thoma§ H. Ptacek‏ @tqbf 31 Mar 2018

      Presenting Cryptopals Set 8 challenge 2: a walkthrough of Pollard’s Kangaroo attack, for when you don’t have enough small subgroups to just CRT your way to key extraction: https://toadstyle.org/cryptopals/3e17c7b35fcf491d08c989081ed18c9a.txt …

      1 reply 3 retweets 17 likes
      Show this thread
    4. Thoma§ H. Ptacek‏ @tqbf 31 Mar 2018

      Presenting Cryptopals Set 8 challenge 3: basic invalid curve attacks — the attack that recently broke JWT, and also several non-OpenSSL TLS libraries. https://toadstyle.org/cryptopals/a0833e607878a80fdc0808f889c721b1.txt …

      1 reply 4 retweets 15 likes
      Show this thread
    5. Thoma§ H. Ptacek‏ @tqbf 31 Mar 2018

      Presenting Cryptopals Set 8 challenge 4: Single-Coordinate Ladders and Insecure Twists: puts the previous challenges together to launch invalid curve attacks on non-twist-secure curves. SO MUCH NEW HIPSTER TERMINOLOGY IS NOW YOURS. https://toadstyle.org/cryptopals/c53b90a3e9e753ddad56edbbd33838aa.txt …

      1 reply 3 retweets 12 likes
      Show this thread
    6. Thoma§ H. Ptacek‏ @tqbf 31 Mar 2018

      And finally Cryptopals Set 8 challenge 5: forging keys to match signatures in RSA and ECDSA. https://toadstyle.org/cryptopals/809dccecda0e94ea588d66c12a1cf593.txt …

      1 reply 4 retweets 13 likes
      Show this thread
    7. Thoma§ H. Ptacek‏ @tqbf 31 Mar 2018

      We are $790 away from unlocking challenge 6. Challenge 6 is a MONSTER problem. One of the 3 best in the entire series.

      2 replies 3 retweets 6 likes
      Show this thread
    8. Thoma§ H. Ptacek‏ @tqbf 31 Mar 2018

      That was fast. Another $1000 in, another challenge unlocked.

      1 reply 2 retweets 7 likes
      Show this thread
      Thoma§ H. Ptacek‏ @tqbf 31 Mar 2018

      Presenting Cryptopals Set 8 challenge 6: KEY RECOVERY ON BIASED ECDSA NONCES. https://toadstyle.org/cryptopals/76f2e314809b2a34ce9ff0d2a08f7a7f.txt … Every DSA signature needs a random nonce, but not every DSA signature truly has one. With even a _bias_ in the nonce, a little linear algebra recovers keys.

      10:54 AM - 31 Mar 2018 from Austin, Chicago
      • 15 Retweets
      • 39 Likes
      • markus_ Kashyap Akira Takahashi Kevin Dienst 🐍 Filipe Cabecinhas Simon Harris 🧅 Kris K ncklr Erik
      1 reply 15 retweets 39 likes
        1. New conversation
        2. Thoma§ H. Ptacek‏ @tqbf 31 Mar 2018

          We’re now $2490 from challenge 7. It’s another key recovery attack… but not on public key crypto.

          4 replies 1 retweet 8 likes
          Show this thread
        3. Thoma§ H. Ptacek‏ @tqbf 31 Mar 2018

          Remember we gotta get this done by midnight EST or Sean burns the remaining challenges.

          2 replies 1 retweet 2 likes
          Show this thread
        4. End of conversation

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