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2003 | OriginalPaper | Buchkapitel

OMAC: One-Key CBC MAC

verfasst von : Tetsu Iwata, Kaoru Kurosawa

Erschienen in: Fast Software Encryption

Verlag: Springer Berlin Heidelberg

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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.

Metadaten
Titel
OMAC: One-Key CBC MAC
verfasst von
Tetsu Iwata
Kaoru Kurosawa
Copyright-Jahr
2003
Verlag
Springer Berlin Heidelberg
DOI
https://doi.org/10.1007/978-3-540-39887-5_11

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