Paper 2016/628
On the properties of the CTR encryption mode of the Magma and Kuznyechik block ciphers with re-keying method based on CryptoPro Key Meshing
Liliya R. Ahmetzyanova, Evgeny K. Alekseev, Igor B. Oshkin, Stanislav V. Smyshlyaev, and Lolita A. Sonina
Abstract
This paper presents a security bound in the standard security model for the Magma cipher CTR encryption mode and the «CryptoPro Key Meshing» (CPKM) re-keying method that was previously used with the GOST 28147-89 cipher. We enumerate the main requirements that should be followed during the development of re-keying methods, then we propose a modified method and justify its advantages over CPKM. We also obtain certain results about the operational features of the Kuznyechik cipher CTR encryption mode with several re-keying methods.
Note: We've added the citation for the important previous work of Abdalla and Bellare, that had been forgotten in the original version of the preprint.
Metadata
- Available format(s)
-
PDF
- Category
- Secret-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- key managementblock cipherscounter mode
- Contact author(s)
- smyshsv @ gmail com
- History
- 2016-08-27: last of 2 revisions
- 2016-06-17: received
- See all versions
- Short URL
- https://ia.cr/2016/628
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2016/628,
author = {Liliya R. Ahmetzyanova and Evgeny K. Alekseev and Igor B. Oshkin and Stanislav V. Smyshlyaev and Lolita A. Sonina},
title = {On the properties of the {CTR} encryption mode of the Magma and Kuznyechik block ciphers with re-keying method based on {CryptoPro} Key Meshing},
howpublished = {Cryptology {ePrint} Archive, Paper 2016/628},
year = {2016},
url = {https://eprint.iacr.org/2016/628}
}
