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OMAC: One-Key CBC MAC
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Abstract: | In this paper, we present One-key CBC MAC (OMAC) and prove its security for arbitrary length messages. OMAC takes only one key, $K$ ($k$ bits) of a block cipher $E$. Previously, XCBC requires three keys, $(k+2n)$ bits in total, and TMAC requires two keys, $(k+n)$ bits in total, where $n$ denotes the block length of $E$. The saving of the key length makes the security proof of OMAC substantially harder than those of XCBC and TMAC. |
BibTeX
@misc{eprint-2002-11703, title={OMAC: One-Key CBC MAC}, booktitle={IACR Eprint archive}, keywords={secret-key cryptography / CBC MAC, block cipher, provable security}, url={http://eprint.iacr.org/2002/180}, note={Pre-proceedings of FSE 2003 iwata@cis.ibaraki.ac.jp 12121 received 25 Nov 2002, last revised 9 Mar 2003}, author={Tetsu Iwata and Kaoru Kurosawa}, year=2002 }