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Images from solar observatory peel away layers of a stellar mystery（图）
Images solar observatory peel away layers stellar mystery
2019/11/22
NSF-funded scientists at the New Jersey Institute of Technology have shed new light on one of the central mysteries of solar physics: how energy from the sun is transferred to the star's upper atmosph...
Efficient Search for Optimal Diffusion Layers of Generalized Feistel Networks
Diffusion Round Feistel Permutations
2019/5/23
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 ...
Linear Equivalence of Block Ciphers with Partial Non-Linear Layers: Application to LowMC
Block cipher LowMC Picnic signature algorithm linear equivalence
2018/8/28
LowMC is a block cipher family that is optimized for practical instantiations of multi-party computation, fully homomorphic encryption, and zero-knowledge proofs. It was designed in 2015 by Albrecht e...
Quantum movement of electrons between atomic layers shows potential application of van der Waals materials for electronics and photonics（图）
Quantum movement electrons between atomic layers potential application van der Waals materials electronics photonics
2017/3/30
Common sense might dictate that for an object to move from one point to another, it must go through all the points on the path.“Imagine someone driving from Kansas City to Topeka on I-70 — it’s safe t...
Design of Lightweight Linear Diffusion Layers from Near-MDS Matrices
lightweight cryptography diffusion layer near-MDS matrix
2017/3/6
Near-MDS matrices provide better trade-offs between security and efficiency compared to constructions based on MDS matrices, which are favored for hardware-oriented designs. We present new designs of ...
Evaluation of gaseous concentrations, bacterial diversity and microbial quantity in different layers of deep litter system
Deep Litter System Environment Gases Concentrations Bacterial Diversity Microbial Quantity
2017/3/9
An experiment was conducted to investigate the environment of the deep litter system and provided theoretical basis for production.
MILP-Aided Bit-Based Division Property for Primitives with Non-Bit-Permutation Linear Layers
MILP-aided bit-based division property AES LED
2016/12/10
At ASIACRYPT 2016, Xiang et al. applied MILP method to search integral distinguisher based on division property. This method handled the huge time and memory complexities which had constituted the mai...
Direct Construction of Lightweight Rotational-XOR MDS Diffusion Layers
Lightweight Cryptography MDS Diffusion Layers Bit-wise Circulant Matrices
2016/12/7
As a core component of Substitution-Permutation Networks, diffusion layer is mainly introduced by matrices from maximum distance separable (MDS) codes. Surprisingly, up to now, most constructions of M...
Designing Optimal Implementations of Linear Layers (Full Version)
Linear Layer XOR Count Equivalence Relation
2016/12/7
Linear layer is a fundamental primitive for many aspects of information
technology. For information security, the performance of a linear layer depends on
two aspects: diffusion ability and implemen...
EXTRACTION OF ICE SHEET LAYERS FROM TWO INTERSECTED RADAR ECHOGRAMS NEAR NEEM ICE CORE IN GREENLAND
Cryosphere Ice sheet layering Radar echo sounding Sub-glacial ice flow NASA IceBridge
2016/11/23
Accumulation of snow and ice over time result in ice sheet layers. These can be remotely sensed where there is a contrast in electromagnetic properties, which reflect variations of the ice density, ac...
Wind Patterns in Lowest Layers of Supercell Storms Key to Predicting Tornadoes
Wind Patterns Lowest Layers Supercell Storms Key Predicting Tornadoes
2016/11/4
The composite near-storm environments of nontornadic and tornadic supercells sampled during the second Verification of the Origins of Rotation in Tornadoes Experiment (VORTEX2) both appear to be gener...
Vectorising Bitmaps into Semi-Transparent Gradient Layers
Semi-Transparent Gradient Layers Vectorising Bitmaps
2016/5/24
We present an interactive approach for decompositing bitmap drawings and studio photographs into opaque and
semi-transparent vector layers. Semi-transparent layers are especially challenging to extra...
Vortex Dynamics in Transitional and Turbulent Boundary Layers
Vortex Dynamics Transitional Turbulent Boundary Layers
2016/5/18
The dynamics of transitional and turbulent boundary layers is explored via a hybrid vortex filament/finite volume simulation scheme in which vortical structures are identified without the constraints ...
Researchers Integrate Diamond/Boron Nitride Crystalline Layers for Use in High-Power Devices
Researchers Integrate Diamond/Boron Nitride Crystalline Layers High-Power Devices
2016/5/19
We have created a new state of BN (named Q-BN) through rapid melting and super undercooling and quenching by using nanosecond laser pulses. Phase pure c-BN is formed either by direct quenching of supe...
Diffusion layers are crucial components of symmetric
ciphers. These components, along with suitable
Sboxes, can make symmetric ciphers resistant against statistical
attacks like linear and differen...