Comment on "Impossible Differential Fault Analysis on the LED Lightweight Cryptosystem in the Vehicular Ad-Hoc Networks"
Jing Yu Huang, Xinjie Zhao, Yidi Wang, Shize Guo, Fan Zhang, Tianming Zheng · 2018
In January 2016, Li et al. introduced an impossible differential fault analysis on the LED cryptosystem. If one random nibble fault is injected into the preantepenultimate round of LED, 48 fault injections are required to recover the secret key. In this comment, we provide an improved scheme with theoretical analysis and experimental results. Under the same fault model, our analysis can reduce the key search space of LED to 27:92 on average with only ONE fault. The key extraction takes about 13.84 seconds on average.