Cryptology ePrint Archive: Report 2005/088

The MAC function Pelican 2.0

Joan Daemen and Vincent Rijmen

Abstract: We present an update of the Pelican MAC function, called Pelican 2.0. Both versions have the Alred construction and are based on Rijndael. they are a factor 2.5 more efficient than CBC-MAC with Rijndael, while providing a comparable claimed security level.

The difference between Pelican 2.0 and the original version is that the initial value changes from the all-zero string to another constant. The reason for this is the negative impact on security if key check values are available computed with a certain standard key check value algorithm that applies the block cipher to the zero string and takes as key check value its truncated output. The security impact of this on a number of standard MACs is studied in Cryptology ePrint Archive Report 2014/183 and the analysis carries over for Pelican.

Category / Keywords: AES, message authentication codes

Date: received 21 Mar 2005, last revised 23 Apr 2014

Contact author: jda at noekeon org

Available format(s): PDF | BibTeX Citation

Note: See abstract

Version: 20140423:150542 (All versions of this report)

Short URL: ia.cr/2005/088

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