eCampus<\/a>.<\/p>\n\n\n\nProcessors and many electronic circuits have units dedicated to arithmetic computations such as addition\/subtraction, multiplication or division. Some units are directly accessible in the instruction set of the processor while others are buried into different circuit blocks (e.g., memory address generation, cryptographic accelerator).<\/p>\n\n\n\n
Designing arithmetic units requires to take into account different and
sometimes conflicting objectives and constraints: ensuring quality (e.g., good accuracy, overflow detection), providing fast operations, requiring small silicon area and small energy, or, in the case of embedded systems, reducing some vulnerabilities to physical attacks.<\/p>\n\n\n\n
The first part of the conference will deal with efficiency. After a few
reminders on digital circuits design, I will present basic arithmetic units for
integer addition and multiplication. Then, I will introduce problems and
solution examples related to high-speed arithmetic circuits and energy
reduction. I will show how other representations of numbers help to perform more efficient computations.<\/p>\n\n\n\n
The last part of the conference will deal with some security aspects related to physical attacks. First I will introduce attacks based on observation (i.e.,
side channel attacks) or perturbation (i.e., fault injection attacks) of the
circuit. Then I will present attack examples. Finally I will present
protection examples using “exotic” representations of numbers and adapted
algorithms and implementations.<\/p>\n\n\n\n
During the conference, I will use historical and current examples from research results and industry to illustrate some points.<\/p>\n","protected":false},"excerpt":{"rendered":"
Arnaud Tisserand, Lab-STICC, CNRS, Lorient Slides in English and presentation in French (or English if required). (Creative Commons Attribution – NonCommercial 4.0 International License.) The videos are on eCampus. Processors and many electronic circuits have units dedicated to arithmetic computations such as addition\/subtraction, multiplication or division. Some units are directly accessible in the instruction set […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-271","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/projects.lsv.ens-paris-saclay.fr\/confsrentree\/index.php?rest_route=\/wp\/v2\/pages\/271","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/projects.lsv.ens-paris-saclay.fr\/confsrentree\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/projects.lsv.ens-paris-saclay.fr\/confsrentree\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/projects.lsv.ens-paris-saclay.fr\/confsrentree\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/projects.lsv.ens-paris-saclay.fr\/confsrentree\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=271"}],"version-history":[{"count":22,"href":"https:\/\/projects.lsv.ens-paris-saclay.fr\/confsrentree\/index.php?rest_route=\/wp\/v2\/pages\/271\/revisions"}],"predecessor-version":[{"id":434,"href":"https:\/\/projects.lsv.ens-paris-saclay.fr\/confsrentree\/index.php?rest_route=\/wp\/v2\/pages\/271\/revisions\/434"}],"wp:attachment":[{"href":"https:\/\/projects.lsv.ens-paris-saclay.fr\/confsrentree\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![](\"https:\/\/www-labsticc.univ-ubs.fr\/~tisseran\/img\/arnaud.png\")
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