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2003
Springer

OMAC: One-Key CBC MAC

9 years 2 months ago
OMAC: One-Key CBC MAC
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. Key words: CBC MAC, block cipher, provable security
Tetsu Iwata, Kaoru Kurosawa
Added 06 Jul 2010
Updated 06 Jul 2010
Type Conference
Year 2003
Where FSE
Authors Tetsu Iwata, Kaoru Kurosawa
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