@inproceedings{41757007d08441009b884226bd05bbfc,
title = "CHAM: A family of lightweight block ciphers for resource-constrained devices",
abstract = "In this paper, we propose a family of lightweight block ciphers CHAM that has remarkable efficiency on resource-constrained devices. The family consists of three ciphers, CHAM-64/128, CHAM-128/128, and CHAM-128/256 which are of the generalized 4-branch Feistel structure based on ARX (Addition, Rotation, XOR) operations. In hardware implementations, CHAM requires smaller areas (73% on average) than SIMON [8] through the use of a stateless-on-the-fly key schedule which does not require updating a key state. Regarding software performance, it achieves outstanding figures on typical IoT platforms in terms of the balanced performance metrics introduced in earlier works. It shows a level of performance competitive to SPECK [8] mainly due to small memory size required for round keys. According to our cryptanalysis results, CHAM is secure against known attacks.",
keywords = "ARX, Lightweight block cipher, Stateless-on-the-fly",
author = "Bonwook Koo and Dongyoung Roh and Hyeonjin Kim and Younghoon Jung and Lee, {Dong Geon} and Daesung Kwon",
note = "Publisher Copyright: {\textcopyright} Springer International Publishing AG, part of Springer Nature 2018.; 20th International Conference on Information Security and Cryptology, ICISC 2017 ; Conference date: 29-11-2017 Through 01-12-2017",
year = "2018",
doi = "10.1007/978-3-319-78556-1_1",
language = "English",
isbn = "9783319785554",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Verlag",
pages = "3--25",
editor = "Dong-Chan Kim and Howon Kim",
booktitle = "Information Security and Cryptology - ICISC 2017 - 20th International Conference, Revised Selected Papers",
address = "Germany",
}