Results 41 to 50 of about 22,418 (196)

Type-3 Feistel Network of The 128-bits Block Size Improved Blowfish Cryptographic Encryption [PDF]

Engineering and Technology Journal, 2009
In this paper, a new secret-key block cipher called 128-bits Blowfish isproposed which is an evolutionary improvement of 64-bits Blowfish designed tomeet the requirements of the Advanced Encryption Standard (AES) to increasesecurity and to improve ...
Ashwaq T. Hashim
doaj   +1 more source

Security Establishment in ADS-B by Format-Preserving Encryption and Blockchain Schemes

Applied Sciences, 2023
In the next generation modernization plan, the automatic dependent surveillance-broadcast (ADS-B) system plays a pivotal role. However, the ADS-B’s low level of security and its vulnerabilities have raised valid concerns.
Jamal Habibi Markani, Abdessamad Amrhar, Jean-Marc Gagné, René Jr Landry   +3 more
doaj   +1 more source

Extended Generalized Feistel Networks using Matrix Representation to Propose a New Lightweight Block Cipher: Lilliput

, 2015
International audienceWhile Generalized Feistel Networks (GFNs) have been widely studied in the literature as a building block of a block cipher, we recall in this paper the results of [1] where a unified vision to easily represent them through a matrix ...
Berger, Thierry Pierre, Thomas, Gaël, Francq, Julien, Minier, Marine   +3 more
core   +1 more source

Selenium speciation dynamics in the Baltic and North Seas: Competing influences of marine and terrestrial inputs, biological activity, and redox conditions

Limnology and Oceanography, Volume 71, Issue 7, July 2026.
Abstract Despite the importance of coastal areas for the transfer of selenium (Se) from rivers to the open ocean and its bioavailability to food webs, dissolved Se concentrations and speciation in these ecosystems remain poorly understood. We conducted a 3‐yr study with monthly water column sampling at five stations spanning from the North Sea to the ...
Esther S. Breuninger, Elyssa Beyrouti, Julie Tolu, Zoé Le Bras, Sylvain Bouchet, Lenny H.E. Winkel   +5 more
wiley   +1 more source

Titanium S-Boxes: A New Family of 4-bit Optimal S-Boxes for Feistel-Based Lightweight Block Ciphers

IEEE Access
Substitution boxes (S-boxes) are the main nonlinear components in lightweight block ciphers (LBCs), including Feistel-based designs. Whereas existing S-boxes achieve optimal resistance to differential attacks (DAs), most remain vulnerable to boomerang ...
David Carcano Ventura, Lil Maria Xibai Rodriguez-Henriquez, Saul Eduardo Pomares Hernandez   +2 more
doaj   +1 more source

Cryptanalysis of NBC-128

Dianzi Jishu Yingyong, 2021
NBC is a family of block ciphers using Generalized Feistel structure, designed by Xu Hong et al. There are three block and key sizes,i.e.,128/128, 128/256 and 256/256. A 16-bit Sbox is involved in the cipher as the non-linear component.
Yang Jiangshuai, Chen Huaifeng, Bao Jinfeng, Kang Xiaowen   +3 more
doaj   +1 more source

The Influence of Topography and Crustal Magnetic Anomalies on the Distribution of Water Ice in the Lunar South Pole Region

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract Lunar magnetic anomalies are abundant near the south pole, where several moderate‐strength anomalies spatially overlap permanently shadowed regions (PSRs). This environment provides a unique setting to assess how crustal magnetic fields and topography regulate plasma–surface interactions and, in turn, the stability and distribution of surface ...
Jan Deca, Lon Hood, Shuai Li
wiley   +1 more source

On the Feistel Counterpart of the Boomerang Connectivity Table

IACR Transactions on Symmetric Cryptology, 2020
At Eurocrypt 2018, Cid et al. introduced the Boomerang Connectivity Table (BCT), a tool to compute the probability of the middle round of a boomerang distinguisher from the description of the cipher’s Sbox(es). Their new table and the following works led
Hamid Boukerrou, Paul Huynh, Virginie Lallemand, Bimal Mandal, Marine Minier   +4 more
doaj   +1 more source

Impact of Moist Thermodynamic Formulations on Climatological Temperature Fields in a Global Cloud‐Resolving Model

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 6, June 2026.
Abstract This study investigates how climatological temperature fields in simulations are influenced by the choice of moist thermodynamic formulations. Two formulations were compared: one developed to ensure internal thermodynamic consistency, and a simpler approximation similar to those commonly used in meteorological and climate models.
Tomoki Ohno, Shuhei Matsugishi
wiley   +1 more source

US–China Trade War: The Effects of Trade Conflict on Brazilian Exports

The World Economy, Volume 49, Issue 6, Page 1293-1313, June 2026.
ABSTRACT Protectionist practices and their implications have been extensively studied in the literature, but few studies have examined the effects of trade competition between two countries on a third country. This paper aims to investigate how a demand shock triggered by China's retaliation against US exports affects Brazil's exports to China.
Dieison Casagrande, Conrado Mallmann, Paulo Feistel   +2 more
wiley   +1 more source