Cryptology ePrint Archive: Report 2021/1502

Strong and Tight Security Guarantees against Integral Distinguishers

Phil Hebborn and Baptiste Lambin and Gregor Leander and Yosuke Todo

Abstract: Integral attacks belong to the classical attack vectors against any given block ciphers. However, providing arguments that a given cipher is resistant against those attacks is notoriously difficult. In this paper, based solely on the assumption of independent round keys, we develop significantly stronger arguments than what was possible before: our main result is that we show how to argue that the sum of ciphertexts over any possible subset of plaintext is key-dependent, i.e., the non existence of integral distinguishers.

Category / Keywords: secret-key cryptography / Block Cipher ยท Integral Distinguisher

Original Publication (with minor differences): IACR-ASIACRYPT-2021

Date: received 12 Nov 2021

Contact author: phil hebborn at rub de, baptiste lambin at protonmail com, gregor leander at rub de, yosuke todo xt at hco ntt co jp

Available format(s): PDF | BibTeX Citation

Note: Full Version with Supplementary Material

Version: 20211115:125756 (All versions of this report)

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