Results 131 to 140 of about 28,859 (311)

The (In)security of Proprietary Cryptography

open access: yes, 2015
Proprietary cryptography is a term used to describe custom encryption techniques that are kept secret by its designers to add additional security. It is questionable if such an approach increases the cryptographic strength of the underlying mathematical algorithms.
openaire   +2 more sources

On Provable Security for Conventional Cryptography

open access: yes, 2000
Many previous results on the provable security of conventional cryptography have been published so far. We provide here handy tools based on Decorrelation Theory for dealing with them and we show how to make their proof easier. As an illustration we survey a few of these results and we (im)prove some by our technique.
openaire   +2 more sources

Decoupling Photochemical and Photothermal Effects Using Molecular Motors Enables Fast, Intelligent, and Life‐Like Motions in Soft Materials

open access: yesAdvanced Materials, EarlyView.
A light‐responsive liquid crystal (LC) polymer network integrating molecular rotary motors and photothermal converters enables the decoupling of photochemical and photothermal effects. Selective wavelength activation allows orthogonal control over persistent shape encoding and fast reversible motion, enabling programmable soft robots capable of complex
Guiying Long   +3 more
wiley   +1 more source

Navigating Lipid Nanostructure Design Space Through Continuous Microfluidic Automation

open access: yesAdvanced Materials, EarlyView.
LipidXplorer is a novel microfluidic platform which enables rapid navigation of lipid particle design space for high‐resolution phase mapping, lipid nanoparticle optimization, membrane biophysics, and functional nanomaterial discovery. It combines programmable composition control, continuous nanoparticle formation, and automated well‐plate collection ...
Bradley Diggines   +10 more
wiley   +1 more source

Security of discrete log cryptosystems in the random oracle and the generic model [PDF]

open access: yes, 1999
We introduce novel security proofs that use combinatorial counting arguments rather than reductions to the discrete logarithm or to the Diffie-Hellman problem. Our security results are sharp and clean with no polynomial reduction times involved.
Jakobsson, Markus, Schnorr, Claus Peter
core  

Computer-Aided Proof for Extended Generalized Feistel Networks

open access: yesIACR Transactions on Symmetric Cryptology
(Multi-branch) Generalized Feistel Network (GFN) enables the construction of block ciphers from non-linear components with small domains, and has been adopted in various block ciphers. Berger et al. (SAC 2013) introduced the Extended Generalized Feistel
Yuchao Chen   +6 more
doaj   +1 more source

Measuring and Manipulating Density of States in Two‐Dimensional Materials With Electrochemical Capacitance

open access: yesAdvanced Materials Interfaces, EarlyView.
We report electrochemical quantum capacitance spectroscopy as an ambient, in situ probe for defect‐mediated electronic structure at 2D material interfaces. Using monolayer MoS2, the method resolves band edges and vacancy states, tracks sulfur‐vacancy evolution during hydrogen evolution, and links interfacial density‐of‐states changes to nearly ...
Mengyu Yan   +9 more
wiley   +1 more source

Ti3C2Tx MXene/Silver Composite Foams For Lightweight, High‐Performance Electromagnetic Interference Shielding and Joule Heating

open access: yesAdvanced Materials Interfaces, EarlyView.
Ultrathin MXene/EMF composite foams achieve a specific shielding efficiency of 749.6 dB.dB·cm3$\mathrm{dB}\cdot {\mathrm{cm}}^{3}$/g, while the silver‐enhanced MXene/Ag/EMF reaches 81.4 dB shielding effectiveness at just 1.0 mm thickness. Both composites exhibit rapid Joule heating, retain stability up to 250∘C$^\circ{\rm C}$, and withstand 1000 ...
Abdullah A. Mahmood   +7 more
wiley   +1 more source

Pairing-Free Certificateless Signature with Security Proof

open access: yesJournal of Computer Networks and Communications, 2014
Wenhao Liu   +4 more
doaj   +1 more source

Cryptanalytic Extraction of Neural Networks with Various Activation Functions

open access: yesIACR Transactions on Symmetric Cryptology
Originally introduced as a machine learning problem in 1991, model extraction was explicitly cast as a cryptanalytic challenge at CRYPTO 2020 and has since gained increasing prominence in this context.
Xiaokang Qi   +4 more
doaj   +1 more source

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