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benhawkes's profile
Ben Hawkes
Ben Hawkes
Ben Hawkes
@benhawkes

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Ben Hawkes

@benhawkes

Project Zero team lead

Joined August 2008

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    Ben Hawkes‏ @benhawkes 12 Mar 2013
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    Notes on Intel Microcode Updates - http://inertiawar.com/microcode/ 

    6:08 AM - 12 Mar 2013
    • 81 Retweets
    • 46 Likes
    • HexBit Jevin Sweval Artem I. Baranov Jacob Torrey vierito5 Travis Goodspeed Gynvael Coldwind sergey bratus dbz
    6 replies 81 retweets 46 likes
      1. Solar Designer‏ @solardiz 30 Mar 2013
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        Replying to @benhawkes

        @benhawkes The other day I've briefly tried applying FactHacks (http://facthacks.cr.yp.to ) to "your" 12 Intel microcode RSA keys - no luck

        0 replies 0 retweets 2 likes
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      1. Tavis Ormandy‏Verified account @taviso 12 Mar 2013
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        Replying to @RolfRolles

        @RolfRolles @benhawkes I don't think there's a private key on board, just a hash of the public key used for auth.

        0 replies 0 retweets 0 likes
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      1. Alex Radocea‏ @defendtheworld 12 Mar 2013
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        Replying to @benhawkes

        @benhawkes great job on this man!

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      1. Richard Johnson‏ @richinseattle 19 Mar 2013
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        Replying to @benhawkes

        @benhawkes Nice writeup on the microcode analysis!

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      1. Solar Designer‏ @solardiz 30 Mar 2013
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        Replying to @benhawkes

        @benhawkes The (non-)hope was that there would be weak primes - either the two primes for a key too close to each other, or a small prime

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      1. Solar Designer‏ @solardiz 30 Mar 2013
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        Replying to @benhawkes

        @benhawkes You mention you had tested for possible small factors up to 2^32; my rho() runs went way beyond that, but not sure how far

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      1. Solar Designer‏ @solardiz 30 Mar 2013
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        Replying to @benhawkes

        @benhawkes Are these 12 the only keys in use, or are there more? Anyhow, your research on this is truly impressive. Thank you!

        0 replies 0 retweets 0 likes
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      1. Marius (wishi)‏ @windsheep_ 31 Mar 2013
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        Replying to @benhawkes

        @benhawkes @solardiz awesome stuff! Thanks!

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