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Checking before output may not be enough against fault-based cryptanalysis

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2 Author(s)
Sung-Ming Yen ; Lab. of Cryptography & Inf. Security, Nat. Central Univ., Chung-Li, Taiwan ; Joye, M.

In order to avoid fault-based attacks on cryptographic security modules (e.g., smart-cards), some authors suggest that the computation results should be checked for faults before being transmitted. In this paper, we describe a potential fault-based attack where key bits leak only through the information whether the device produces a correct answer after a temporary fault or not. This information is available to the adversary even if a check is performed before output

Published in:

Computers, IEEE Transactions on  (Volume:49 ,  Issue: 9 )

Date of Publication:

Sep 2000

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