Cryptology ePrint Archive: Report 2021/1210

LedMAC: More Efficient Variants of LightMAC

Yaobin Shen; Lei Wang; Dawu Gu

Abstract: LightMAC is a lightweight MAC designed by Luykx et al. and recently standardized by ISO/IEC. In this paper, we refine LightMAC and suggest two simple variants called LedMAC1 and LedMAC2. Compared to LightMAC, our first scheme LedMAC1 avoids unnecessary padding without sacrificing the security. Our second scheme LedMAC2 further reduces the number of keys from two to one, and achieves the same level security as that of LightMAC.

Category / Keywords: secret-key cryptography / Lightweight cryptography; Message authentication code; Provable security

Date: received 16 Sep 2021, last revised 16 Sep 2021

Contact author: yaobins180 at gmail com, wanglei_hb at sjtu edu cn, dwgu at sjtu edu cn

Available format(s): PDF | BibTeX Citation

Version: 20210917:092417 (All versions of this report)

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