Skip to content
  • Home Home Home, current page.
  • Moments Moments Moments, current page.

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?

    New to Twitter?
    Sign up
RichFelker's profile
Rich Felker
Rich Felker
Rich Felker
@RichFelker

Tweets

Rich Felker

@RichFelker

Yeah, I do @musllibc, FOSS & infosec stuff. But now is not the time for a mostly-/only-tech Twitter feed.

musl-libc.org
Joined March 2014

Tweets

  • © 2018 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list


    Under 100 characters, optional

    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Ethan  ✨ Heilman‏ @Ethan_Heilman Aug 23

      Is the reason that collision attacks on hash functions rarely get expended to preimage attacks: (a). preimage attacks are much more difficult? (b). Or once collision attacks are shown hash is retired so researcher have no incentive to extend the attack? @zooko

      7 replies 6 retweets 17 likes
      Show this thread
      Rich Felker‏ @RichFelker Aug 24
      Replying to @Ethan_Heilman @puellavulnerata @zooko

      In what world does (b) happen? ☺

      5:00 AM - 24 Aug 2018
      1 reply 0 retweets 0 likes
        1. New conversation
        2. Ethan  ✨ Heilman‏ @Ethan_Heilman Aug 24
          Replying to @RichFelker @puellavulnerata @zooko

          sha-1 stopped being used for a bunch of things after collisions, md5 was retired after TLS certs were forged with a collision attack, any SHA-3 candidate that was shown to have collisions was no longer in the running

          2 replies 0 retweets 0 likes
        3. Rich Felker‏ @RichFelker Aug 24
          Replying to @Ethan_Heilman @puellavulnerata @zooko

          SHA-1 is still very widely used. MD5 (single round, no salt) is still often used for storing passwords...

          1 reply 0 retweets 0 likes
        4. Ethan  ✨ Heilman‏ @Ethan_Heilman Aug 24
          Replying to @RichFelker @puellavulnerata @zooko

          That's a fair point. Talking from the perspective of someone who considered writing a paper exploiting md5 weaknesses, the sense that I got was that no one would care. I wrote another paper instead.

          1 reply 0 retweets 2 likes
        5. Rich Felker‏ @RichFelker Aug 24
          Replying to @Ethan_Heilman @puellavulnerata @zooko

          For papers, nobody cares unless it's new and shiny. Meanwhile real-world attackers are enjoying decades-old vulnerabilities and weaknesses while researchers play with shiny new toys.

          1 reply 0 retweets 0 likes
        6. Ethan  ✨ Heilman‏ @Ethan_Heilman Aug 24
          Replying to @RichFelker @puellavulnerata @zooko

          How would you fix that? Should people write papers like: "unsalted md5 is still a bad idea". I doubt the people making these mistakes follow research.

          1 reply 0 retweets 0 likes
        7. Rich Felker‏ @RichFelker Aug 24
          Replying to @Ethan_Heilman @puellavulnerata @zooko

          No, but expanding the knowledge of ways to attack md5 is worthy of papers still I think. Surveys of prevalence of outdated hashes in incidents would also be, I think.

          1 reply 1 retweet 1 like
        8. Ethan  ✨ Heilman‏ @Ethan_Heilman Aug 24
          Replying to @RichFelker @puellavulnerata @zooko

          Hard agree!

          0 replies 0 retweets 0 likes
        9. End of conversation

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2018 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Cookies
        • Ads info