Results 51 to 60 of about 3,510 (286)
Advanced Science, EarlyView.The pholidota‐inspired electronic skin is successfully constructed, originally realized four‐state reversible switching of terahertz‐wave reflection, absorption, transmission, and secondary reflection. In response to external demands, it issues deformation instructions, verifies the deformation state after the equipment executes the action, and thus ...
Shangjing Li +4 more
wiley +1 more source
Perfect secrecy cryptosystem with nonuniform distribution of keys
Tongxin xuebao, 2018 More strictly mathematical concepts of infinite perfect secrecy and random “one-time pad” cryptosystem in theory were presented,and the whole secure communication system was divided into two stages:design of a basic cryptosystem and one of its ...
Chuanjun TIAN
doaj +2 more sources
A Real Orthogonal Space-Time Coded UWB Scheme for Wireless Secure Communications
EURASIP Journal on Wireless Communications and Networking, 2009 Recent research reveals that information security and information-hiding capabilities can be enhanced by proper exploitation of space-time techniques. Meanwhile, intrinsic properties of ultra-wideband (UWB) signals make it an outstanding candidate for ...
Yanbing Zhang, Huaiyu Dai
doaj +2 more sources
Advanced Science, EarlyView.We investigate whether Montessori and traditional schooling systems shape the developmental trajectory of large‐scale brain dynamics in different ways. We quantify the arrow of time (“non‐reversibility”) in neural activity during resting state and movie‐watching, revealing distinct maturational patterns.
Elvira del Agua +6 more
wiley +1 more source
Secrecy Balancing over Two-User MISO Interference Channels with Rician Fading
International Journal of Antennas and Propagation, 2013 This paper considers a 2-user multiple-input single-output (MISO) interference channel with confidential messages (IFC-CM), in which the Rician channel model is assumed.
Jiqing Ni +5 more
doaj +1 more source
Perfect Secrecy in the Wild: A Characterization
Alice wishes to reveal the state $X$ to Bob, if he knows some other information $Y$ also known to her. If Bob does not, she wishes to reveal nothing about $X$ at all. When can Alice accomplish this? We provide a simple necessary and sufficient condition on the joint distribution of $X$ and $Y$.
Costas Cavounidis +2 more
openaire +2 more sources
Symmetric-key Authenticated Key Exchange (SAKE) with Perfect Forward Secrecy [PDF]
, 2019 Key exchange protocols in the asymmetric-key setting are known to provide stronger security properties than protocols in symmetric-key cryptography. In particular, they can provide perfect forward secrecy, as illustrated by key exchange protocols based ...
Loïc Ferreira +2 more
core
Site‐Specific Hydroxide Formation and Corrosion on Mg Nanocrystals
Advanced Science, EarlyView.Using single‐crystalline Mg nanocrystals, this study uncovers the intrinsic corrosion initiation mechanism. The stability of the protective Mg(OH)2 film depends on its interfacial coherence with the Mg substrate. Corrosion initiates at exposed corners, where film coverage is incomplete.
Yao Liu +8 more
wiley +1 more source
Analysis and improvement of an ID-based authenticated key agreement protocol
Tongxin xuebao, 2008 The security of a recently proposed ID-based authenticated key agreement protocol was analyzed. Although it is provably secure in the standard model, a malicious PKG （private key generator） can still obtain all of the agreed ses-sion keys, that is, it ...
WANG Xiao-fen1 +2 more
doaj +2 more sources
Secure On-Off Transmission in UAV Relay-Assisted mmWave Networks
Applied Sciences, 2019 This paper investigates secure transmission in unmanned aerial vehicle (UAV) relay-assisted millimeter wave (mmWave) networks, where the selected UAV relay performs secure transmission in both the on-off and non-on-off schemes.
Ruiqian Ma +3 more
doaj +1 more source