Revisiting structure graphs: Applications to CBC-MAC and EMAC

In [2], Bellare, Pietrzak and Rogaway proved an O⁢(ℓ⁢q2/2n)${O(\ell q^{2}/2^{n})}$ bound for the PRF (pseudorandom function) security of the CBC-MAC based on an n-bit random permutation Π, provided ℓ<2n/3${\ell<2^{n/3}}$. Here an adversary can make at most q prefix-free queries each having at...

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Bibliographic Details
Main Authors: Jha Ashwin, Nandi Mridul
Format: Article
Language:English
Published: De Gruyter 2016-12-01
Series:Journal of Mathematical Cryptology
Subjects:
cbc
Online Access:https://doi.org/10.1515/jmc-2016-0030