Cryptology ePrint Archive: Report 2018/692

New Configurations of Grain Ciphers: Security Against Slide Attacks

Diana Maimut and George Teseleanu

Abstract: eSTREAM brought to the attention of the cryptographic community a number of stream ciphers including Grain v0 and its revised version Grain v1. The latter was selected as a finalist of the competition's hardware-based portfolio. The Grain family includes two more instantiations, namely Grain 128 and Grain 128a.

The scope our paper is to provide an insight on how to obtain secure configurations of the Grain family of stream ciphers. We propose different variants for Grain and analyze their security with respect to slide attacks. More precisely, as various attacks against initialization algorithms of Grain were discussed in the literature, we study the security impact of various parameters which may influence the LFSR's initialization scheme.

Category / Keywords: secret-key cryptography / Grain, security, new configurations, slide attacks

Original Publication (in the same form): BalkanCryptSec 2018

Date: received 18 Jul 2018

Contact author: maimut diana at gmail com

Available format(s): PDF | BibTeX Citation

Version: 20180719:135236 (All versions of this report)

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