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This is the the methodology followed in the Common Criteria security certification framework leading to these "EAL5+" certification.. It comes with an "Attack Method" document which is not public. It's only shared within the certification scheme.pic.twitter.com/3mLhwhGreY
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Thrilled to attend J.-B. Bédrune presentation on HSM Security at
#realworldcryptopic.twitter.com/JhpRuZT40d
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Epic story on the security of the Moscow Internet voting system. Feat. Triple El Gamal, 256 bits modulii, publication of decryption key...
#realworldcrypto Previous presentation slides: https://eccworkshop.org/2019/slides/gaudry.pdf …pic.twitter.com/IrfNCACEo0
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Just arrived at
#realworldcrypto conference! Looking forward!pic.twitter.com/BIuJ5coiru
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I just entered in the Donjon and I met the first prototype of
@DonjonLedger new toy: "The Silicon Toaster" I'm looking forward to toasting some ICs!pic.twitter.com/Krhtisbfuo
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There are probably few/none TA exploitation in the wild. They have been discovered in 1996, and a lot of more efficient SCA have been discovered almost at the same time Well known, easy to counter, not so efficient Nevertheless, TA and SPA remain good examples to teach SCA :)pic.twitter.com/Q7l8S14XUV
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Thanks for the link, it seems we share similar opinions on the topic :)pic.twitter.com/hEzwIuitec
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Yes, sqrt(2^256) = 2^128 I might have missed some new research, but for instance https://arxiv.org/pdf/1804.00200 claims the same... Did I miss something?pic.twitter.com/soWdXRCFX8
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1/ My take on Shamir Secret Sharing SSS is an elegant method to split a secret into n shares such that: - Any quorum of k (<= n) shares are enough to reconstruct the secret - Any quorum of m (< k) shares gives NO information on the secret [ex of quorums k=2, n=3 or k=3,n=5]pic.twitter.com/f8CZLhynFu
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Shaping the Glitch at
#CHES. A pretty good *science* article giving efficient methods for extracting data from 6 different general purpose MCUs (STM32, MSP430, Renesas 78k) with a very cheap setup Article here: https://tches.iacr.org/index.php/TCHES/article/view/7390 …pic.twitter.com/DVWn6fA4f8
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If you're around don't miss our brand new open source Scaffold board. Otherwise, have a look to our Github https://github.com/Ledger-Donjon/scaffold … https://twitter.com/DonjonLedger/status/1164214808734048257 …pic.twitter.com/p9GePuFvmj
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Interesting article tackling the problem of portability from a device to another in the context of supervised/profiled SCA. I got very good results using similar tricks with an EM signal difficult to retrieve when switching from a device to another https://eprint.iacr.org/2019/818 pic.twitter.com/8jWG00r3DN
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Our short security study of Ellipal Wallet is online: https://ledger-donjon.github.io/Ellipal-Security/ … The findings have been responsibly disclosed, and
@ellipalwallet even gave us a bounty.pic.twitter.com/B2i2nhY5Ub -
Very intersting article by
@colinoflynn. It allows Side Channel Analysis of Trustzone code, using the on-board ADC from the userland https://eprint.iacr.org/2019/689.pdf On top of that, they used our Open Source tool Lascar for the study
https://github.com/Ledger-Donjon/lascar … Soon in Chipwhisperer?
pic.twitter.com/WF7oeIti8C
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Here are the slides of the my presentation
@breakingbitcoin last weekend: https://docs.google.com/presentation/d/1FOL56v7CmhqgH1o6pICMMBy0H1JErzY-kThUijJnPjQ … For those interested, technical blogposts will be published soon.pic.twitter.com/fXUvBse0d5
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Sure, here are the slides of the presentation https://docs.google.com/presentation/d/1FOL56v7CmhqgH1o6pICMMBy0H1JErzY-kThUijJnPjQ/edit#slide=id.p1 …pic.twitter.com/dEdM9qC3sj
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The video of my presentation
@breakingbitcoin. (It lasts around 30min). Sorry for the Frenglish :) https://www.youtube.com/watch?v=DqhxPWsJFZE&t=9532s … -
I'll be presenting our findings about wallets security in 1 hour. (12:15 CEST).
Live here
https://youtu.be/DqhxPWsJFZE
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