Results 41 to 50 of about 585 (189)

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

Improved Search of Boomerang Distinguishers for Generalized Feistel and Application to WARP

IACR Transactions on Symmetric Cryptology
Boomerang and rectangle cryptanalysis are powerful cryptanalytic techniques for security evaluation of block ciphers. Automated search for boomerang distinguishers is an important area of research. In FSE 2023, Hadipour et al.
Xinhao Zeng, Lin Tan, Hong Xu
doaj   +1 more source

Meet-in-the-Middle Attacks on Classes of Contracting and Expanding Feistel Constructions

IACR Transactions on Symmetric Cryptology, 2017
We show generic attacks on unbalanced Feistel ciphers based on the meet-in-the-middle technique. We analyze two general classes of unbalanced Feistel structures, namely contracting Feistels and expanding Feistels.
Jian Guo, Jérémy Jean, Ivica Nikolic, Yu Sasaki   +3 more
doaj   +1 more source

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

Engineering and Technology Journal, 2010
Reprogrammable devices such as Field Programmable Gate Arrays (FPGAs)are highly attractive options for hardware implementations of encryption algorithmsas they provide cryptographic algorithm agility, physical security, and potentiallymuch higher ...
Ashwaq Talib Hashim, Yousra A. Mohammed, Ekhlas H. Karam   +2 more
doaj   +1 more source

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

Solving Degree Bounds for Iterated Polynomial Systems

IACR Transactions on Symmetric Cryptology
For Arithmetization-Oriented ciphers and hash functions Gröbner basis attacks are generally considered as the most competitive attack vector. Unfortunately, the complexity of Gröbner basis algorithms is only understood for special cases, and it is ...
Matthias Johann Steiner
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

Improved Security Bounds for Generalized Feistel Networks

IACR Transactions on Symmetric Cryptology, 2020
We revisit the security of various generalized Feistel networks. Concretely, for unbalanced, alternating, type-1, type-2, and type-3 Feistel networks built from random functions, we substantially improve the coupling analyzes of Hoang and Rogaway (CRYPTO
Yaobin Shen, Chun Guo, Lei Wang
doaj   +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

Improvement of the Minimal‐Guess‐Basis MILP Model and Its Application to ESF

IET Information Security, Volume 2026, Issue 1, 2026.
The guess‐and‐determine technique find wide applications in the recovery of unknown variables within given system of relations. The fundamental concept behind this technique involves guessing certain unknown variables and deducing the remaining ones based on the relational system.
Lingchen Li, Zhi Qiao, Yiming Dai, Yongzhuang Wei, Tao Ye, Bohui Wang   +5 more
wiley   +1 more source