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Title:
Distinguishing Attack and Second-Preimage Attack on the CBC-like MACs
Authors: Keting Jia, Xiaoyun Wang, Zheng Yuan, Guangwu Xu
Abstract:In this paper, we first present a new distinguisher on the CBC-MAC based on a block cipher in Cipher Block Chaining (CBC) mode. It can also be used to distinguish other CBC-like MACs from random functions. The main results of this paper are on the second-preimage attack on CBC-MAC and CBC-like MACs include TMAC, OMAC, CMAC, PC-MAC and MACs based on three-key encipher CBC mode. Instead of exhaustive search, this attack can be performed with the birthday attack complexity.
ePrint: https://eprint.iacr.org/2008/542
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