LedMAC: More Efficient Variants of LightMAC

Yaobin Shen; Lei Wang; Dawu Gu

Paper 2021/1210

LedMAC: More Efficient Variants of LightMAC

Yaobin Shen, Lei Wang, and 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.

Metadata

Available format(s): PDF
Category: Secret-key cryptography
Publication info: Preprint. MINOR revision.
Keywords: Lightweight cryptography Message authentication code Provable security
Contact author(s): yaobins180 @ gmail com
wanglei_hb @ sjtu edu cn
dwgu @ sjtu edu cn
History: 2021-09-17: received
Short URL: https://ia.cr/2021/1210
License: CC BY

BibTeX

@misc{cryptoeprint:2021/1210,
      author = {Yaobin Shen and Lei Wang and Dawu Gu},
      title = {LedMAC: More Efficient Variants of LightMAC},
      howpublished = {Cryptology ePrint Archive, Paper 2021/1210},
      year = {2021},
      note = {\url{https://eprint.iacr.org/2021/1210}},
      url = {https://eprint.iacr.org/2021/1210}
}