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Multiple-Valued Plaintext-Checking Side-Channel Attacks on Post-Quantum KEMs
July 20, 2022, 4:18 p.m. |
IACR News www.iacr.org
ePrint Report: Multiple-Valued Plaintext-Checking Side-Channel Attacks on Post-Quantum KEMs
Yutaro Tanaka, Rei Ueno, Keita Xagawa, Akira Ito, Junko Takahashi, Naofumi Homma
This paper presents a side-channel analysis (SCA) on key encapsulation
mechanisms (KEMs) based on the Fujisaki–Okamoto (FO) transformation and its variants. Many post-quantum KEMs usually perform re-encryption during key decapsulation to achieve CCA security. It has been shown that the side-channel leakage of re-encryption can be exploited for mounting a key-recovery plaintext-checking attack (KR-PCA), even if the CPA secure …
attacks channel eprint report plaintext post-quantum quantum side-channel side-channel attacks
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