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Possible spell-corrected query: \textsf{alfred} construction
2008/516 (PDF) Last updated: 2008-12-12
Distinguishing and Forgery Attacks on Alred and Its AES-based Instance Alpha-MAC
Zheng Yuan, Keting Jia, Wei Wang, Xiaoyun Wang
Secret-key cryptography

In this paper, we present new distinguishers of the MAC construction \textsc{Alred} and its specific instance \textsc{Alpha}-MAC based on AES, which is proposed by Daemen and Rijmen in 2005. For the \textsc{Alred} construction, we describe a general distinguishing attack which leads to a forgery attack directly. The complexity is $2^{64.5}$ chosen messages and $2^{64.5}$ queries with success probability 0.63. We also use a two-round collision differential path for \textsc{Alpha}-MAC, to...

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