Schindler, Werner ; Itoh, Kouichi
Hrsg.: Lopez, J. ; Tsudik, G. (2011)
Exponent Blinding Does not Always Lift (Partial) SPA Resistance to Higher-Level Security.
Konferenzveröffentlichung, Bibliographie
Kurzbeschreibung (Abstract)
Exponent blinding is known as a secure countermeasure against side-channel attacks. If single power traces reveal some exponent bits, an attack by Fouque et al. applies that recovers the exponent. However, this attack becomes infeasible if some of the guessed bits are incorrect. Thus, the attack was not assumed to be a realistic threat. In this paper we present two variants of a novel generic attack, which works for considerable error rates at each bit position, disproving the hypothesis that mere exponent blinding is always sufficient. We confirmed experimentally that our attack permits up to 28% (RSA case) or 23% (ECC case) error bits.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2011 |
| Herausgeber: | Lopez, J. ; Tsudik, G. |
| Autor(en): | Schindler, Werner ; Itoh, Kouichi |
| Art des Eintrags: | Bibliographie |
| Titel: | Exponent Blinding Does not Always Lift (Partial) SPA Resistance to Higher-Level Security |
| Sprache: | Englisch |
| Publikationsjahr: | Juni 2011 |
| Verlag: | Springer |
| (Heft-)Nummer: | 6715 |
| Buchtitel: | ACNS 2011 |
| Reihe: | LNCS |
| Kurzbeschreibung (Abstract): | Exponent blinding is known as a secure countermeasure against side-channel attacks. If single power traces reveal some exponent bits, an attack by Fouque et al. applies that recovers the exponent. However, this attack becomes infeasible if some of the guessed bits are incorrect. Thus, the attack was not assumed to be a realistic threat. In this paper we present two variants of a novel generic attack, which works for considerable error rates at each bit position, disproving the hypothesis that mere exponent blinding is always sufficient. We confirmed experimentally that our attack permits up to 28% (RSA case) or 23% (ECC case) error bits. |
| Freie Schlagworte: | Secure Things;side-channel analysis, exponent blinding, NAF representation |
| ID-Nummer: | TUD-CS-2011-0129 |
| Fachbereich(e)/-gebiet(e): | 20 Fachbereich Informatik > Sicherheit in der Informationstechnik LOEWE > LOEWE-Zentren > CASED – Center for Advanced Security Research Darmstadt LOEWE > LOEWE-Zentren 20 Fachbereich Informatik LOEWE |
| Hinterlegungsdatum: | 30 Dez 2016 20:23 |
| Letzte Änderung: | 15 Mai 2018 13:42 |
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