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Journal of Computer Systems, Networks, and Communications
Volume 2008 (2008), Article ID 923079, 6 pages
Research Article

Novel Hardware Implementation of the Cipher Message Authentication Code

Department of Electrical and Computer Engineering, University of Patras, 26500 Patras, Greece

Received 3 April 2008; Revised 28 July 2008; Accepted 12 August 2008

Academic Editor: X. Du

Copyright © 2008 H. E. Michail et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A new algorithm for producing message authenticating codes (MACs) was recently proposed by NIST. The MAC protects both a message's integrity—by ensuring that a different MAC will be produced if the message has changed—as well as its authenticity because only someone who knows the secret key could have generated a valid MAC. The proposed security scheme incorporates an FIPS approved and secure block cipher algorithm and was standardized by NIST in May, 2005. In this paper is presented the first efficient hardware implementation of the CMAC standard.