Abstract
Abstract The LED is a new lightweight cipher, which was published in CHES 2011. This cipher could be applied in the Wireless Sensor Network to provide security. On the basis of the single byte-oriented fault model, we propose a differential fault analysis on the LED cipher. The attack could recover its 64-bit secret key by introducing 4 faulty ciphertexts, and 128-bit secret key by introducing 8 faulty ciphertexts. The results in this study will be beneficial to the analysis of the same type of other iterated lightweight ciphers.
Highlights
The LED is a new Substitution-Permutation Network (SPN) lightweight cipher published in CHES 20111
We propose a single byte differential fault analysis method to recover the secret key of LED
This paper examines single byte differential fault analysis on LED in software implementation
Summary
The LED is a new Substitution-Permutation Network (SPN) lightweight cipher published in CHES 20111. It has a good compact hardware implementation and software-friendly features, and could be applied in the sensor network, RIFD tag deployment and other application characterized by highly-constrained devices. Differential fault analysis (DFA) is a new class of cryptanalysis on cryptographic devices. The DFA exploits accessible information like input-output behavior under malfunctions, amplifies and evaluates the leaked information with the help of mathematical methods It is based on deriving information about the secret key by examining the differences between a cipher resulting from correct operation and a cipher of the same initial message resulting from faulty operation. This analysis is often much more powerful than classical cryptanalysis
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