Secure Multiple SBoxes Implementation with Arithmetically Masked Input

Bettale, Luk

doi:10.1007/978-3-642-37288-9_7

Cited by 1 publication

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“…To counter Safe Error Attacks, an efficient countermeasure consists in using a masked implementation [10]. With this method the manipulated bits value changes every time.…”

Section: Common Countermeasuresmentioning

confidence: 99%

To Exploit Fault Injection on Non-injective Sboxes

Bethouart¹,

Debande²

2015

2015 Workshop on Fault Diagnosis and Tolerance in Cryptography (FDTC)

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Differential Fault Analysis (DFA) attacks are well known to cryptanalyse embedded cryptographic algorithms. However, efficient countermeasures exist and most devices are now secured against this kind of attacks. In the same way, Safe Error attacks avoid most of DFA countermeasures but they can not break a masked implementation. In this paper, we introduce a new fault attack which takes advantage of both kinds of attack and which is efficient with all countermeasures detecting the fault. We illustrate this attack on the DES Sboxes, even if it applies on all non-injective Sboxes. First, we provide a short reminder of DES, we introduce previous attacks performed on it and we present some existing mechanisms to defend it against these threats. Then, we introduce our attack which consists in injecting faults that nullify after passing in the SBoxes of the first round and allows retrieving the key of a secure DES implementation. We continue by presenting the simulated results of our attack. Finally, we detail the results of our attack realised on a DES implemented on a smart card thus confirming its practical feasibility.

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“…To counter Safe Error Attacks, an efficient countermeasure consists in using a masked implementation [10]. With this method the manipulated bits value changes every time.…”

Section: Common Countermeasuresmentioning

confidence: 99%

To Exploit Fault Injection on Non-injective Sboxes

Bethouart¹,

Debande²

2015

2015 Workshop on Fault Diagnosis and Tolerance in Cryptography (FDTC)

View full text Add to dashboard Cite

show abstract

Secure Multiple SBoxes Implementation with Arithmetically Masked Input

Cited by 1 publication

References 20 publications

To Exploit Fault Injection on Non-injective Sboxes

To Exploit Fault Injection on Non-injective Sboxes

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