Paper 2019/1285
Full-Round Differential Attack on DoT Block Cipher
Manoj Kumar
Abstract
The lightweight encryption design DoT was published by Patil et al in 2019. It is based on SPN (substitution permutation network) structure. Its block and key size are 64-bit and 128-bit respectively. In this paper, we analyse the security of DoT against differential attack and present a series of differential distinguishers for full-round DOT. Our analysis proves that DoT we can be distinguished from a random permutation with probability equal to 2^62. Diffusion layer of DoT is a combination of byte shuffling, 8-P permutation, 32-bit word shuffling and circular shift operations. We analyse the security of DoT with and without 8-P permutation in its diffusion layer. Our results indicate that DoT provides better resistance to differential attack without using the 8-P permutation.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- Block CipherLightweight Block CipherDifferential CryptanalysisBranch-and-bound Algorithm
- Contact author(s)
- manojkumar @ sag drdo in
- History
- 2019-11-07: received
- Short URL
- https://ia.cr/2019/1285
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2019/1285,
author = {Manoj Kumar},
title = {Full-Round Differential Attack on {DoT} Block Cipher},
howpublished = {Cryptology {ePrint} Archive, Paper 2019/1285},
year = {2019},
url = {https://eprint.iacr.org/2019/1285}
}
