Paper 2018/692

New Configurations of Grain Ciphers: Security Against Slide Attacks

Diana Maimut and George Teseleanu


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.

Available format(s)
Secret-key cryptography
Publication info
Published elsewhere. BalkanCryptSec 2018, Secitc 2021
Grainsecuritynew configurationsslide attacks
Contact author(s)
maimut diana @ gmail com
george teseleanu @ yahoo com
2022-03-15: revised
2018-07-19: received
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Creative Commons Attribution


      author = {Diana Maimut and George Teseleanu},
      title = {New Configurations of Grain Ciphers: Security Against Slide Attacks},
      howpublished = {Cryptology ePrint Archive, Paper 2018/692},
      year = {2018},
      note = {\url{}},
      url = {}
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