Results 51 to 60 of about 718 (207)

Secure Key-Alternating Feistel Ciphers Without Key Schedule [PDF]

, 2020
Light key schedule has found many applications in lightweight blockciphers, e.g. LED, PRINTcipher and LBlock. In this paper, we study an interesting question of how to design a as light as possible key schedule from the view of provable security and ...
Lei Wang, Xuejia Lai, Yaobin Shen, Hailun Yan   +3 more
core  

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

Responses of Reef Fish Populations to Similar Environmental Changes Across Distant Oceanic Islands

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 4, April 2026.
ABSTRACT Oceanic islands are among the most remote and understudied regions of the planet, yet they harbour unique reef fish communities that are increasingly vulnerable to global environmental change. Because these islands are geographically isolated, their populations are often assumed to respond mainly to local environmental conditions.
Thamíris C. Karlovic, Amanda R. Rodrigues, Leeann Henry, Sergio R. Floeter, Kirsty L. Jones, Carlos E. L. Ferreira, Paulo S. Polito, Olga T. Sato, Maria A. Gasalla   +8 more
wiley   +1 more source

Design and Research of S-Box Based on Dynamic Strategy

Dianxin kexue, 2015
Block cipher encryption is the mainstream method of information security application,and it has been widely used in wireless sensor networks.S-box which is one of the core modules of block cipher algorithm has a direct and significant impact on the ...
Zhouquan Du, Qijian Xu, Jie Zhang, Xudong Zhong, Zhulin An   +4 more
doaj   +2 more sources

Eddy‐Induced Iron Transport Sustains the Biological Productivity in the Gulf of Alaska

Journal of Geophysical Research: Oceans, Volume 131, Issue 2, February 2026.
Abstract The surface waters of the subarctic northeastern Pacific Ocean contain high concentrations of macronutrients such as phosphate and nitrate, which can potentially drive photosynthesis and biological uptake of carbon dioxide. Regional biological productivity, however, is limited by a lack of necessary micronutrients such as iron.
T. Ito, A. H. V. Timmerman, A. Bjouklund, S. I. Stanley, Y. Abe, C. T. Reinhard, J. Montoya   +6 more
wiley   +1 more source

Yoyo Cryptanalysis Against Reduced-Round L-Feistel Structure for Recovering the Secret Components

IET Information Security
L-Feistel structure is a new iterative block cipher structure and unifies the Feistel structure and the Lai–Massey structure while maintaining the similarity of encryption and decryption. In this study, we present the first yoyo cryptanalysis against the
Jiyan Zhang, Yuxin Niu, Zhen Shi, Ting Cui   +3 more
doaj   +1 more source

Differential Attacks by Algebraic Solving on a Series of HE‐Friendly Stream Ciphers

IET Information Security, Volume 2026, Issue 1, 2026.
In recent years, many symmetric encryption ciphers have been proposed for homomorphic encryption (HE) applications. Rasta and its variants Masta and Pasta have gradually become a self‐contained series of HE‐friendly stream ciphers. The feature of these ciphers is that a fresh affine layer is randomly generated for each encryption.
Xichao Hu, Lin Jiao, Yongqiang Li, Yonglin Hao, Xinxin Gong, Deepali   +5 more
wiley   +1 more source

Design of Iterative MDS Matrices Based on MISTY Structure

IET Information Security, Volume 2026, Issue 1, 2026.
The security of symmetric‐key ciphers critically depends on the diffusion efficiency of their linear components. Iterative maximum distance separable (MDS) matrices, as fundamental elements of diffusion layer, play a pivotal role in constructing secure cryptographic systems.
Guoqiang Liu, Yijia Yang, Bing Sun, Da Lin, Kangquan Li, Qichun Wang   +5 more
wiley   +1 more source

Security evaluation on type‐1 and type‐1‐like 4‐branch generalized Feistel structures and application to reduced‐round Lesamnta‐LW‐BC

IET Information Security, 2022
Generalized Feistel structures (called GFSs for short) are one of the most popular block cipher structures. They are mainly divided into type‐1, type‐2 and type‐3 GFS.
Xuan Shen, Guoqiang Liu, Xiaofeng Wang, Bing Sun, Jun He   +4 more
doaj   +1 more source