2015CHES会议挑战CHES 2015 Challenge

2015CHES会议挑战CHES 2015 Challenge

CHES 2015 ChallengeAdrian Thillard, Ryad Benadjila, Emmanuel Prou , Gu´ ena¨ el Renault, Matthieu Rivain

CHES 2015– Tuesday, September 15th, St-Malo, France

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

CHES Challenge: goal

Challenge people on CHES topics Add fun to the conference

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

CHES Challenge: general principle

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Download 4 challenges Solve their problem to retrieve ags Enter ags on our website to earn points??? PROFIT

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Stats

250 registrations 44 retrieved at least one ag First to retrieve all the ags: 6 days - yobibeCheck his awesome writeup 1 ! !

8 players retrieved all the ags

1. http://wiki.yobi.be/wiki/CHES2015_Writeup4/39 A. Thillard, R. Benadjila CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Winners (1/2)

1

hellman yobibe (represented by Joppe BOS) jybu (represented by Fran¸ cois DASSANCE) fox (represented by Ilya KIZHVATOV)

2

3

4

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Winners (1/2)

1

hellman

2

yobibe (represented by Joppe BOS) jybu (represented by Fran¸ cois DASSANCE) fox (represented by Ilya KIZHVATOV)

3

4

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Winners (1/2)

1

hellman

2

yobibe (represented by Joppe BOS)

3

jybu (represented by Fran¸ cois DASSANCE) fox (represented by Ilya KIZHVATOV)

4

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Winners (1/2)

1

hellman

2

yobibe (represented by Joppe BOS)

3

jybu (represented by Fran¸ cois DASSANCE)

4

fox (represented by Ilya KIZHVATOV)

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Winners (2/2)

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c23 (represented by Cyril ROSCIAN) Seeluna (C´ eline THUILLET) barbapapa (represented by Julien FRANCQ) OverTime (represented by Alberto BATTISTELLO) dummy (represented by Peter SHWABE) marsob

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

CHES Challenge: description

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WAV le: signal analysis, SCA JPG le: fun (stegano, chess, googling) C le: factorisation, primes collision, SCA, fault attacks PNG le: pattern matching, emulation, padding oracle, whitebox

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Challenge 1- WAV le

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Challenge 1- WAV le: First ag

Quicken the le= voice reading letters Letters form sentences= solving recipe

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Challenge 1- WAV le: First ag is in the spectrogram

Go on pastebin= rst ag and plaintexts1 1. Note to self: do not screw with the plaintexts

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Challenge 1- WAV le: First ag is in the spectrogram

Go on pastebin= rst ag and plaintexts1 1. Note to self: do not screw with the plaintexts

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Challenge 1- WAV le: Second ag: Getting the curvesRecipe instructed to extract needles

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Challenge 1- WAV le: Second ag: Getting the curvesRecipe instructed to extract needles

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Challenge 1- WAV le: Second ag

CPA HW (Mayer-Sommer (CHES00), Brier et al. (CHES04))= Secret Key Secret Key= ag

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Challenge 2- JPG le

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CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Challenge 2- JPG le: First ag

credit: Denelson8314/39 A. Thillard, R. Benadjila CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Challenge 2- JPG le: First ag

Order the cells according to their numbers Blue= STEGHIDE, phrase about helped mate Use STEGHIDE on jpg with password= previous phrase Get Gabor.txt= rst ag

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A. Thillard, R. Benadjila

CHES15 Challenge

2015CHES会议挑战CHES 2015 Challenge

Challenge 2- JPG le: Second ag

In text le: FEN notation

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CHES15 Challenge

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