EXTRACTORS

作品数：7被引量：4H指数：1
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Copy-Move Forgery Verification in Images Using Local Feature Extractors and Optimized Classifiers
《Big Data Mining and Analytics》2023年第3期347-360,共14页S.B.G.Tilak Babu Ch Srinivasa Rao 
Passive image forgery detection methods that identify forgeries without prior knowledge have become a key research focus.In copy-move forgery,the assailant intends to hide a portion of an image by pasting other portio...
关键词：copy move forgery detection image authentication passive image forgery detection blind forgery detection 
Robust and Reusable Fuzzy Extractors from Non-Uniform Learning with Errors Problem
《Computers, Materials & Continua》2023年第1期1985-2003,共19页Joo Woo Jonghyun Kim Jong Hwan Park 
supported by Institute of Information&communications Technology Planning&Evaluation(IITP)grant funded by the Korea government(MSIT)(No.2022-0-00518,Blockchain privacy preserving techniques based on data encryption).
Afuzzy extractor can extract an almost uniformrandom string from a noisy source with enough entropy such as biometric data.To reproduce an identical key from repeated readings of biometric data,the fuzzy extractor gen...
关键词：Fuzzy extractor REUSABILITY robustness biometric authentication non-uniform learning with errors 
Non-malleable Extractor in the Presence of Classical or Quantum Side Information
《Chinese Journal of Electronics》2019年第5期938-943,共6页LIU Yipeng GUO Jiansheng CUI Jingyi 
Non-malleable extractor is an important tool for studying the problem of privacy amplification in classical and quantum cryptography with an active adversary. The randomness of the weakly-random source X before privac...
关键词：QUANTUM cryptography Privacy ampli-fication Randomness EXTRACTORS Non-malleable CLASSICAL and QUANTUM side information 
Efficient extraction and stripping of Nd(Ⅲ),Eu(Ⅲ) and Er(Ⅲ) by membrane dispersion micro-extractors被引量：3
《Journal of Rare Earths》2018年第8期851-856,共6页Zhuo Chen Jianhong Xu Funing Sang Yundong Wang 
Project supported by the National Safety Academy Foundation(U1530107);National Natural Science Foundation of China(21476121,21636004);National Key Basic Research Program of China(2012CBA01203);Beijing Natural Science Foundation(2162020)
The extraction of low concentration rare earth elements at high phase ratio was investigated. The traditional extraction set-up, such as mixer-settler, have drawbacks of easy emulsification, difficult separation and l...
关键词：Rare earth elements Membrane dispersion micro-extractor EXTRACTION STRIPPING 
A new construction on randomized message-locked encryption in the standard model via UCEs被引量：1
《Science China(Information Sciences)》2017年第5期61-79,共19页Huige WANG Kefei CHEN Baodong QIN Xuejia LAI Yunhua WEN 
supported by National Natural Science Foundation of China (Grant Nos. NSFC61133014, NSFC61472114, NSFC61572318, NSFC61272440, NSFC61472251, U1536101, NSFC61502400);Foundation of Sichuan Educational Committee (Grant No. 16ZB0140);Natural Science Foundation of Anhui Science and Technology University (Grant No. ZRC2013380)
We present a new primitive of randomized message-locked encryption（MLE） in this paper and define a new security model for it. The new primitive, named message-locked encryption3（hereafter referred as MLE3）,is actu...
关键词：message-locked encryption3 （MLE3） universal computational extractors （UCEs） privacy chosen-distribution attacks3 （PRV-CDA3） strong tag consistency （STC） standard model 
Constant-round zero-knowledge proofs of knowledge with strict polynomial-time extractors for NP
《Science China(Information Sciences)》2014年第1期146-159,共14页LI HongDa FENG DengGuo 
partially supported by National Basic Research Program of China(973 program)(Grant No.2007CB311202);National Natural Science Foundation of China(Grant No.60970139);Strategic Priority Program of Chinese Academy of Sciences(Grant No.XDA06010702);IIEs Cryptography Research Project
Barak and Lindell showed that there exist constant-round zero-knowledge arguments of knowledge with strict polynomial-time extractors. This leaves the open problem of whether it is possible to obtain an analogous resu...
关键词：zero-knowledge proofs proofs of knowledge constant-round strict polynomial-time extractors 
Progress in Computational Complexity Theory
《Journal of Computer Science & Technology》2005年第6期735-750,共16页蔡进一 朱洪 
美国自然科学基金，国家自然科学基金
We briefly survey a number of important recent uchievements in Theoretical Computer Science （TCS）, especially Computational Complexity Theory. We will discuss the PCP Theorem, its implications to inapproximability o...
关键词：theoretical computer science computational complexity theory PCP theorem INAPPROXIMABILITY logspace complexity Reingold＇s theorem GAP problem primality testing complexity of lattice problems worst-case to average-case reductions PSEUDORANDOMNESS EXTRACTORS holographic algorithms 
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