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Single Key Variant of PMAC_Plus
- Source :
- IACR Transactions on Symmetric Cryptology, Pp 268-305 (2017)
- Publication Year :
- 2017
- Publisher :
- Ruhr-Universität Bochum, 2017.
-
Abstract
- At CRYPTO 2011, Yasuda proposed the PMAC_Plus message authentication code based on an n-bit block cipher. Its design principle inherits the well known PMAC parallel network with a low additional cost. PMAC_Plus is a rate-1 construction like PMAC (i.e., one block cipher call per n-bit message block) but provides security against all adversaries (under black-box model) making queries altogether consisting of roughly upto 22n/3 blocks (strings of n-bits). Even though PMAC_Plus gives higher security than the standard birthday bound security, with currently available best bound, it provides weaker security than PMAC for certain choices of adversaries. Moreover, unlike PMAC, PMAC_Plus operates with three independent block cipher keys. In this paper, we propose 1k-PMAC_Plus, the first rate-1 single keyed block cipher based BBB (Beyond Birthday Bound) secure (in standard model) deterministic MAC construction without arbitrary field multiplications. 1k-PMAC_Plus, as the name implies, is a simple one-key variant of PMAC_Plus. In addition to the key reduction, we obtain a higher security guarantee than what was proved originally for PMAC_Plus, thus an improvement in two directions.
Details
- Language :
- English
- ISSN :
- 2519173X
- Database :
- Directory of Open Access Journals
- Journal :
- IACR Transactions on Symmetric Cryptology
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.1d4ad0709a32461fb67c7f5c89d793bb
- Document Type :
- article
- Full Text :
- https://doi.org/10.13154/tosc.v2017.i4.268-305