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BBB PRP Security of the Lai-Massey Mode
Dec. 1, 2023, 3:18 a.m. |
IACR News www.iacr.org
ePrint Report: BBB PRP Security of the Lai-Massey Mode
Ritam Bhaumik, Mohammad Amin Raeisi
In spite of being a popular technique for designing block ciphers, Lai-Massey networks have received considerably less attention from a security analysis point-of-view than Feistel networks and Substitution-Permutation networks. In this paper we study the beyond-birthday-bound (BBB) security of Lai-Massey networks with independent random round functions against chosen-plaintext adversaries. Concretely, we show that five rounds are necessary and sufficient to achieve BBB security.
analysis attention bbb beyond block ciphers eprint report mode networks point popular report security security analysis study
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