Detail publikace

Crucial pitfall of DPA Contest V4.2 Implementation

MARTINÁSEK, Z. IGLESIAS, F. MALINA, L. MARTINÁSEK, J.

Originální název

Crucial pitfall of DPA Contest V4.2 Implementation

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Differential Power Analysis (DPA) is a powerful side-channel key recovery attack that efficiently breaks cryptographic algorithm implementations. In order to prevent these types of attacks, hardware designers and software programmers make use of masking and hiding techniques. DPA Contest is an international framework that allows researchers to compare their power analysis attacks under the same conditions. The latest version of DPA Contest, denoted as V4.2, provides an improved implementation of the Rotating Sbox Masking (RSM) scheme where low-entropy boolean masking is combined with the shuffling technique to protect AES (Advanced Encryption Standard) implementation on a smart card. The improvements were designed based on the awareness of implementation lacks analyzed from attacks carried out during the previous DPA Contest V4. Therefore, this new approach is devised to resist most of the proposed attacks to the original RSM implementation. In this article, we investigate the security of this new implementation in practice. Our analysis, focused on exploiting the first-order leakage, discovered important lacks. The main vulnerability observed is that an adversary can mount a standard DPA attack aimed at the S-box output in order to recover the whole secret key even when a shuffling technique is used. We tested this observation on a public dataset and implemented a successful attack that revealed the secret key using only 35 power traces.

Klíčová slova

Power analysis; DPA Contest; Masking; RSM; DPA

Autoři

MARTINÁSEK, Z.; IGLESIAS, F.; MALINA, L.; MARTINÁSEK, J.

Vydáno

24. 1. 2017

Nakladatel

Wiley

ISSN

1939-0122

Periodikum

Security and Communication Networks (online)

Ročník

9

Číslo

18

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

17

Strany počet

17

URL

http://onlinelibrary.wiley.com/doi/10.1002/sec.1760/full

BibTex

@article{BUT136730,
  author="Zdeněk {Martinásek} and Felix {Iglesias} and Lukáš {Malina} and Josef {Martinásek}",
  title="Crucial  pitfall of DPA Contest V4.2 Implementation",
  journal="Security and Communication Networks (online)",
  year="2017",
  volume="9",
  number="18",
  pages="1--17",
  doi="10.1002/sec.1760",
  issn="1939-0122",
  url="http://onlinelibrary.wiley.com/doi/10.1002/sec.1760/full"
}