文章基本信息

标题：Equivalent Key Recovery Attack to H2-MAC
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作者：Fanbao Liu1 2 ; Tao Xie1 ; Changxiang Shen 等
期刊名称：International Journal of Security and Its Applications
印刷版ISSN：1738-9976
出版年度：2012
卷号：6
期号：2
出版社：SERSC
摘要：In this paper, we propose an efficient method to break H2-MAC, by using a generalized birthday attack to recover the equivalent key, under the assumption that the underlying hash function is secure (collision resistance). We can successfully recover the equivalent key of H2-MAC in about 2n/2on-line MAC queries and 2n/2off-line hash computations with great probability. This attack shows that the security of H2-MAC is totally dependent on the col- lision resistance of the underlying hash function, instead of the PRF-AX of the underlying compression function in the origin security proof of H2-MAC.
关键词：H2-MAC; Equivalent Key Recovery; Collision Resistance; Birthday Para-;dox.