Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Seyed Mojtaba Dehnavi"'
Autor:
Seyed Mojtaba Dehnavi
Publikováno v:
Cryptography, Vol 3, Iss 1, p 1 (2018)
SIMON and SPECK families of block ciphers are well-known lightweight ciphers designed by the NSA. In this note, based on the previous investigations on SIMON, a closed formula for the squared correlations and differential probabilities of the mapping
Externí odkaz:
https://doaj.org/article/a66898c3c5d14cafbd5baa06c694116b
Autor:
Mohammad Reza Mirzaee Shamsabad, Akbar Mahmoodi Rishakani, Nasour Bagheri, Seyed Mojtaba Dehnavi
Publikováno v:
Advances in Mathematics of Communications. 15:311-327
Many modern symmetric ciphers apply MDS or almost MDS matrices as diffusion layers. The performance of a diffusion layer depends on its diffusion property measured by branch number and implementation cost which is usually measured by the number of XO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c495052d1726e31f900c112b0cf2db9e
https://doi.org/10.3934/amc.2020068
https://doi.org/10.3934/amc.2020068
Publikováno v:
Journal of Discrete Mathematical Sciences and Cryptography. 23:1515-1528
MDS diffusion layers are critical in the design of modern symmetric ciphers. Lightweight MDS matrices are studied for designing ciphers targeting hardware-oriented applications. In 2016, Be...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3b80fda18b0e99920308fb84e89f8da
https://doi.org/10.1080/09720529.2019.1643551
https://doi.org/10.1080/09720529.2019.1643551
Publikováno v:
Groups Complexity Cryptology. 11:123-131
MDS diffusion layers are critical components in the design of symmetric ciphers. In this paper, after introducing some new algebraic structures, we provide new MDS matrices over special types of R-modules. With the help of the proposed methodology, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7447ab64a122d514e8de83d4a3e68a2e
https://doi.org/10.1515/gcc-2019-2011
https://doi.org/10.1515/gcc-2019-2011
Publikováno v:
ISCISC
Lightweight components are used in the design of modern lightweight ciphers. In the current paper, firstly we investigate a new family of lightweight $4\times 4$ almost MDS diffusion layers, mathematically, and determine when they are involutive. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a333946d08bbca9b96ee15f907a13cd6
https://doi.org/10.1109/iscisc48546.2019.8985148
https://doi.org/10.1109/iscisc48546.2019.8985148
Publikováno v:
International Journal of Applied Cryptography. 4:36
Maximum distance separable (MDS) matrices play a crucial role in symmetric ciphers as diffusion layers. Dynamic diffusion layers for software applications are less considered up to now. Dynamic (randomised) components could make symmetric ciphers mor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d4e1953653e8f686ae1ff7c8dbbcc0d
https://doi.org/10.1504/ijact.2020.10029198
https://doi.org/10.1504/ijact.2020.10029198
Publikováno v:
ISCISC
Components which are constructed via the application of basic instructions of modern processors are common in symmetric ciphers targeting software applications; among them are polynomials over $\mathbb{Z}_{2^{n}}$, which fit n-bit processors. For ins
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cda934915ed76bbf15ec6385d294131f
https://doi.org/10.1109/iscisc.2018.8546901
https://doi.org/10.1109/iscisc.2018.8546901
Publikováno v:
ISCISC
S-boxes are crucial components of symmetric ciphers. In this article, firstly we examine the nonlinearity and differential uniformity of mappings obtained via switching given mappings over F 2 n, on arbitrary subsets. Then, using this investigation,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b916aa6960a97cdec4e645ed5dc8ce6
https://doi.org/10.1109/iscisc.2016.7736443
https://doi.org/10.1109/iscisc.2016.7736443
Publikováno v:
2015 12th International Iranian Society of Cryptology Conference on Information Security and Cryptology (ISCISC).
Diffusion layers are an important part of most symmetric ciphers and MDS matrices can be used to construct perfect diffusion layers. However, there are few techniques for constructing these matrices with low implementation cost in software/hardware.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::807fb82e7d9b89a9e6527a357fc6e9cb
https://doi.org/10.1109/iscisc.2015.7387897
https://doi.org/10.1109/iscisc.2015.7387897
Autor:
Einollah Pasha, Hamid Reza Maimani, Seyed Mojtaba Dehnavi, A. Mahmoodi Rishakani, M. R. Mirzaee Shamsabad
Publikováno v:
ISCISC
Diffusion layers are an important part of most symmetric ciphers and MDS matrices can be used to construct perfect diffusion layers. However, there are few techniques for constructing these matrices with low implementation cost in software/hardware.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1377056fdd5c6f57b5778bb95a07b186
https://doi.org/10.1109/iscisc.2014.6994017
https://doi.org/10.1109/iscisc.2014.6994017