### Lightweight AE and HASH in a Single Round Function

Dingfeng Ye, Danping Shi, and Peng Wang

##### Abstract

To deal with message streams, which is required by many symmetric cryptographic functionalities (MAC, AE, HASH), we propose a lightweight round function called Thin Sponge. We give a framework to construct all these functionalities (MAC, AE, and HASH) using the same Thin Sponge round function. Besides the common security assumptions behind traditional symmetric algorithms, the security of our schemes depends on the hardness of problems to find collisions of some states. We give a class of constructions of Thin Sponge, which is improvement of the round function of Trivium and ACORN. We give simple criteria for determining parameters. According to these criteria, we give an example, which achieves all functionalities in a single round function and hence can be realized by the same hardware. Our algorithm is also efficient in software.

Available format(s)
Category
Secret-key cryptography
Publication info
Preprint. MAJOR revision.
Keywords
Thin SpongelightweightMACAEHASH
Contact author(s)
dpshi @ is ac cn
History
Short URL
https://ia.cr/2018/1126

CC BY

BibTeX

@misc{cryptoeprint:2018/1126,
author = {Dingfeng Ye and Danping Shi and Peng Wang},
title = {Lightweight AE and HASH in a Single Round Function},
howpublished = {Cryptology ePrint Archive, Paper 2018/1126},
year = {2018},
note = {\url{https://eprint.iacr.org/2018/1126}},
url = {https://eprint.iacr.org/2018/1126}
}

Note: In order to protect the privacy of readers, eprint.iacr.org does not use cookies or embedded third party content.