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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 20 Oct 2017
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      So this is the core of the Infineon RSA fail key detector: https://marcan.st/paste/MOEoh2EH.txt … - this is very interesting indeed (and a huge fail).

      1 reply 20 retweets 35 likes
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    2. Hector Martin‏ @marcan42 20 Oct 2017
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      Note that Infineon keys pass *all* of those tests: m%p for each of those p is in the list. Infineon moduli mod 37 are *always* in (1,10,26)!

      2 replies 0 retweets 4 likes
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    3. Hector Martin‏ @marcan42 20 Oct 2017
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      I'm no cryptanalyst but that sounds like some serious severe fail indeed. They generate a *tiny* fraction of all possible moduli.

      2 replies 1 retweet 3 likes
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    4. Hector Martin‏ @marcan42 20 Oct 2017
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      This SO question has more info:https://crypto.stackexchange.com/questions/52292/what-is-fast-prime …

      1 reply 2 retweets 9 likes
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      Hector Martin‏ @marcan42 20 Oct 2017
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      Here's an even simpler deobfuscated version of the ROCA RSA key test:https://gist.github.com/marcan/fc87aa78085c2b6f979aefc73fdc381f …

      6:11 AM - 20 Oct 2017
      • 8 Retweets
      • 16 Likes
      • d3m3vilurr Gabriel Montclaire Nicolás Wolovick ehntoo Bernhard Froemel Joe Parker Mako João Poupino Foe Hammer
      1 reply 8 retweets 16 likes
        1. New conversation
        1. Myria‏ @Myriachan 20 Oct 2017
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          Replying to @marcan42

          The implementation was obfuscated?

          2 replies 0 retweets 0 likes
        2. Titus, Washed-Up Has-Been‏ @EUNI_Titus 20 Oct 2017
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          Replying to @Myriachan @marcan42

          Assumedly since they didn't want to disclose the actual vuln until the paper's presentation...

          0 replies 0 retweets 0 likes
          3. End of conversation

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