LedMAC: More Efficient Variants of LightMAC

Yaobin Shen; Lei Wang; Dawu Gu

Paper 2021/1210 Original: eprint.iacr.org/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.

Metadata

Available format(s): PDF
Category: Secret-key cryptography
Publication info: Preprint.
History: 2021-09-17: last updated; 2021-09-17: published
Short URL: https://ia.cr/2021/1210
License: https://creativecommons.org/licenses/by/4.0/

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},
      url = {https://eprint.iacr.org/2021/1210}
}