Results 51 to 60 of about 13,379 (184)

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

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

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

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

Quantum Distinguishing Attacks against Type-1 Generalized Feistel Ciphers [PDF]

, 2019
A generalized Feistel cipher is one of the methods to construct block ciphers, and it has several variants. Dong, Li, and Wang showed quantum distinguishing attacks against the $(2d-1)$-round Type-1 generalized Feistel cipher with quantum chosen ...
Gembu Ito, Tetsu Iwata
core   +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

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

Efficient Search for Optimal Diffusion Layers of Generalized Feistel Networks

IACR Transactions on Symmetric Cryptology, 2019
The Feistel construction is one of the most studied ways of building block ciphers. Several generalizations were then proposed in the literature, leading to the Generalized Feistel Network, where the round function first applies a classical Feistel ...
Patrick Derbez, Pierre-Alain Fouque, Baptiste Lambin, Victor Mollimard   +3 more
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

Links between Quantum Distinguishers Based on Simon’s Algorithm and Truncated Differentials

IACR Transactions on Symmetric Cryptology
In this paper, we study the quantum security of block ciphers based on Simon’s period-finding quantum algorithm. We explored the relations between periodic functions and truncated differentials. The basic observation is that truncated differentials with
Zejun Xiang, Xiaoyu Wang, Bo Yu, Bing Sun, Shasha Zhang, Xiangyong Zeng, Xuan Shen, Nian Li   +7 more
doaj   +1 more source