Results 91 to 100 of about 12,998 (288)

Efficient Electrocatalytic Conversion of CO2 to Pure Formic Acid Solutions via Strain‐Engineered Bismuth Nanosheets

open access: yesAdvanced Science, EarlyView.
Tensile‐strained bismuth nanosheets (TS‐BiNs) achieve a formate Faradaic efficiency of 92% at −1000 mA cm−2 and enable stable production of pure formic acid (HCOOH) in a solid‐state electrolyte reactor. Theoretical calculations reveal that the introduced strain lowers the energy barrier for *OCHO intermediate formation, fundamentally enhancing the ...
Shiqi Li   +16 more
wiley   +1 more source

A Symbolic Intruder Model for Hash-Collision Attacks [PDF]

open access: yes, 2007
In the recent years, several practical methods have been published to compute collisions on some commonly used hash functions. In this paper we present a method to take into account, at the symbolic level, that an intruder actively attacking a protocol execution may use these collision algorithms in reasonable time during the attack.
Yannick Chevalier, Mounira Kourjieh
openaire   +2 more sources

Collision Attack on GRINDAHL [PDF]

open access: yes, 2016
Hash functions have been among the most scrutinized cryptographic primitives in the previous decade, mainly due to the cryptanalysis breakthroughs on MD-SHA family and the NIST SHA3 competition that followed.
Thomas Peyrin
core  

Integrated Single‐Cell and Spatial Analysis Reveals a Metabolic‐Immune Axis Driving Aortic Dissection

open access: yesAdvanced Science, EarlyView.
Single‐cell and spatial profiling of 110 human thoracic aortic samples reveals a stromal–immune circuit driving aortic dissection. An elastin‐rich fibroblast subset is depleted with age and markedly reduced in disease, weakening aortic wall integrity.
Jing Tao   +25 more
wiley   +1 more source

Horizontal Collision Correlation Attack on Elliptic Curves [PDF]

open access: yes, 2014
Elliptic curves based algorithms are nowadays widely spread among embedded systems. They indeed have the double advantage of providing efficient implementations with short certificates and of being relatively easy to secure against side-channel attacks.
Aurélie Bauer   +3 more
openaire   +1 more source

A Collision Attack on a Double-Block-Length Compression Function Instantiated with Round-Reduced AES-256 [PDF]

open access: yes, 2015
This paper presents the first non-trivial collision attack on the double-block-length compression function presented at FSE 2006 instantiated with round-reduced AES-256: f_0(h_0∥h_1,M)∥f_1(h_0∥h_1,M) such that f_0(h_0∥h_1,M) =E_(h_0)⊕h_0, f_1(h_0∥h_1,M)
Atsuko Miyaji   +7 more
core   +1 more source

Spatiotemporal Control of Formation of Dynamic Protein Fiber Assemblies via Photophysical Effects of a Focused Laser Beam

open access: yesAdvanced Science, EarlyView.
Tightly focused laser irradiation can accumulate tubulin proteins at/around the laser focus, which leads to the formation of highly ordered microtubule assemblies. The assemblies can exhibit various dynamic behaviors such as radial motion, bundling, and flagella‐like rotation with motor protein and chemical energy, highlighting as a unique tool for ...
Hiroshi Y. Yoshikawa   +16 more
wiley   +1 more source

Collision Attack on XTR and a Countermeasure with a Fixed Pattern [PDF]

open access: yes, 2005
Recently, XTR is considered as one of good candidates for more energy efficient cryptosystems. Among the family of XTR algorithms, the Improved XTR Single Exponentiation (XTR-ISE) is the most efficient one suitable for ubiquitous computer. Even though the security of such devices against side channel attacks is very dangerous, there are few works on ...
Dong-Guk Han   +4 more
openaire   +2 more sources

Protein Structuromics Reveals a Loop‐Controlled Half‐Open Active Pocket Conformation Throughout Fe(II)/α‐ketoglutarate‐Dependent Dioxygenase Catalytic Cycle

open access: yesAdvanced Science, EarlyView.
This study reveals a conserved half‐open active pocket in Fe(II)/α‐ketoglutarate‐dependent dioxygenases through protein structuromics, distinguished by structural features comprising highly flexible loop elements. Enhanced sampling simulations‐guided mutagenesis experiments elucidated how this flexible loop regulates pocket open/closed conformations ...
Lunjie Wu   +10 more
wiley   +1 more source

Preimage and collision attacks on reduced Ascon using algebraic strategies

open access: yesCybersecurity
Ascon, a family of algorithms that supports hashing and authenticated encryption, is the winner of the NIST Lightweight Cryptography Project. In this paper, we propose an improved preimage attack against 2-round Ascon-XOF-64 with a complexity of $$2^{33}$
Qinggan Fu   +3 more
doaj   +1 more source

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