Misuse-resistant MGM2 mode | allinfosecnews.com

Nov. 17, 2022, 10:12 p.m. |

IACR News www.iacr.org

ePrint Report: Misuse-resistant MGM2 mode

Liliya Akhmetzyanova, Evgeny Alekseev, Alexandra Babueva, Andrey Bozhko, Stanislav Smyshlyaev

We introduce a modification of the Russian standardized AEAD MGM mode — an MGM2 mode, for which a nonce is not encrypted anymore before using it as an initial counter value. For the new mode we provide security bounds regarding security notions in the nonce-misuse setting (MRAE-integrity and CPA-resilience). The obtained bounds are even better than the bounds obtained for the original MGM mode regarding …

eprint report mode

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