Results 41 to 50 of about 15,368 (325)

Higher-Order Differential-Linear Cryptanalysis of ChaCha Stream Cipher

IEEE Access
This paper studies the advanced methodologies of differential cryptanalysis with a particular emphasis on higher-order differentials and higher-order differential-linear cryptanalysis, along with their application to the ChaCha stream cipher.
Nasratullah Ghafoori, Atsuko Miyaji
doaj   +1 more source

Secret Channel using Video Steganography

JOIV: International Journal on Informatics Visualization, 2017
Video steganography is about hiding the secret message into the video as the cover media. Steganography is a technique use to secure the transmission of secret information or hide their existence.
Lee Kar Yee, Chuah Chai Wen
doaj   +1 more source

A New Guess-and-Determine Attack on the A5/1 Stream Cipher [PDF]

, 2012
In Europe and North America, the most widely used stream cipher to ensure privacy and confidentiality of conversations in GSM mobile phones is the A5/1. In this paper, we present a new attack on the A5/1 stream cipher with an average time complexity of 2^
Mahalanobis, Ayan, Shah, Jay
core   +1 more source

Rheocasting versus Die Casting: An Insight into the Low‐Cycle Fatigue Behavior of AlSi7Mg0.6

Advanced Engineering Materials, EarlyView.
The study compares rheocast lightweight components with high‐pressure die cast materials regarding microstructure and fatigue behavior. Rheocast process offers higher efficiency due to lower casting temperatures. Despite some microstructural differences, both processes show similar strengths (yield strength 125 MPa, tensile strength 240 MPa).
Julia Richter, Thomas Wegener, Andreas Schilling, Martin Fehlbier, Thomas Niendorf   +4 more
wiley   +1 more source

Numerical solvers and cryptanalysis

Journal of Mathematical Cryptology, 2009
In this paper, we present an approach to apply numerical methods in the cryptanalysis of modern cryptographic algorithms. We focus on the stream cipher Trivium. It is a stream cipher recommended by the eStream project in the hardware category.
Lamberger Mario, Nad Tomislav, Rijmen Vincent   +2 more
doaj   +1 more source

Linear Complexity of New Binary Sequence Derived From Polynomial Quotients Modulo p in General Case and Their Generalizations

IEEE Access, 2022
Pseudorandom sequences with large linear complexity have been widely applied in electronic countermeasures, mobile communication and cryptography.
Jiang Ma, Jun Zhang, Yanguo Jia, Xiumin Shen   +3 more
doaj   +1 more source

The DRACO Stream Cipher

IACR Transactions on Symmetric Cryptology, 2022
Stream ciphers are vulnerable to generic time-memory-data tradeoff attacks. These attacks reduce the security level to half of the cipher’s internal state size. The conventional way to handle this vulnerability is to design the cipher with an internal state twice as large as the desired security level.
Hamann, Matthias, Moch, Alexander, Krause, Matthias, Mikhalev, Vasily   +3 more
openaire   +3 more sources

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source

Quantum Noise Randomized Ciphers

, 2006
We review the notion of a classical random cipher and its advantages. We sharpen the usual description of random ciphers to a particular mathematical characterization suggested by the salient feature responsible for their increased security.
C. Helstrom, C. Shannon, Ch. G. Gunther, D. R. Stinson, Eric Corndorf, H. N. Jendahl, H. P. Yuen, Horace P. Yuen, Lo, Prem Kumar, Ranjith Nair, T. M. Cover, Takami Eguchi, V. Chepyzhov   +13 more
core   +1 more source