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| 1 | Enhanced secondary pollution offset reduction of primary emissions during COVID-19 lockdown in China显示文摘To control the spread of the 2019 novel coronavirus(COVID-19),China imposed nationwide restrictions on the movement of its population(lockdown)after the Chinese New Year of 2020,leading to large reductions in economic activities and associated emissions.Despite such large decreases in primary pollution,there were nonetheless several periods of heavy haze pollution in eastern China,raising questions about the well-established relationship between human activities and air quality.Here,using comprehensive measurements and modeling,we show that the haze during the COVID lockdown was driven by enhancements of secondary pollution.In particular,large decreases in NOx emissions from transportation increased ozone and nighttime NO_(3)radical formation,and these increases in atmospheric oxidizing capacity in turn facilitated the formation of secondary particulate matter.Our results,afforded by the tragic natural experiment of the COVID-19 pandemic,indicate that haze mitigation depends upon a coordinated and balanced strategy for controlling multiple pollutants. | Xin Huang Aijun Ding Jian Gao Bo Zheng Derong Zhou Ximeng Qi Rong Tang Jiaping Wang Chuanhua Ren Wei Nie Xuguang Chi Zheng Xu Liangduo Chen Yuanyuan Li Fei Che Nini Pang Haikun Wang Dan Tong Wei Qin Wei Cheng Weijing Liu Qingyan Fu Baoxian Liu Fahe Chai Steven JDavis Qiang Zhang Kebin He | 2021 | National Science Review2021，8，2： | 47 |
| 2 | Efficient large-universe multi-authority ciphertext-policy attribute-based encryption with white-box traceability显示文摘Traceable multi-authority ciphertext-policy attribute-based encryption(CP-ABE) is a practical encryption method that can achieve user traceability and fine-grained access control simultaneously. However, existing traceable multi-authority CP-ABE schemes have two main limitations that prevent them from practical applications. First, these schemes only support small universe: the attributes must be fixed at system setup and the attribute space is restricted to polynomial size. Second, the schemes are either less expressive(the access policy is limited to 'AND gates with wildcard') or inefficient(the system is constructed in composite order bilinear groups). To address these limitations, we present a traceable large universe multi-authority CP-ABE scheme, and further prove that it is statically secure in the random oracle model.Compared with existing traceable multi-authority CP-ABE schemes, the proposed scheme has four advantages. First, the attributes are not fixed at setup and the attribute universe is not bounded to polynomial size. Second, the ciphertext polices can be expressed as any monotone access structures. Third, the proposed scheme is constructed in prime order groups, which makes this scheme more efficient than those in composite order bilinear groups. Finally, the proposed scheme requires neither a central authority nor an identity table for tracing. | Kai ZHANG Hui LI Jianfeng MA Ximeng LIU | 2018 | Science China(Information Sciences)2018，61，3： | 10 |
| 3 | Low-Complexity Secure Network Coding Against Wiretapping Using Intra/Inter-generation Coding显示文摘Existing solutions against wiretapping attacks for network coding either bring significant bandwidth overhead or incur a high computational complexity.In order to reduce the security overhead of the existing solutions for securing network coding,a novel securing network coding paradigm is presented relying on two coding models:intra-generation coding and inter-generation coding.The basic idea to secure network coding using intra-generation coding is to limit the encryption operations for each generation,and then subject the scrambled and the remaining original source vectors to a linear transformation.This method is then generalized seamlessly using inter-generation coding by further exploiting the algebraic structure of network coding.We show that the proposed schemes have properties of low-complexity security,little bandwidth consumption,and high efficiency in integrating with the existing security techniques effectively. | LIU Guangjun LIU Binyue LIU Ximeng LI Fang GUO Wangmei | 2015 | China Communications2015，12，6： | 9 |
| 4 | Design and manufacture AR head-mounted displays:A review and outlook显示文摘Augmented reality head-mounted displays(AR-HMDs)enable users to see real images of the outside world and visualize virtual information generated by a computer at any time and from any location,making them useful for various applications.The manufacture of AR-HMDs combines the fields of optical engineering,optical materials,optical coating,precision manufacturing,electronic science,computer science,physiology,ergonomics,etc.This paper primarily focuses on the optical engineering of AR-HMDs.Optical combiners and display devices are used to combine real-world and virtual-world objects that are visible to the human eye.In this review,existing AR-HMD optical solutions employed for optical combiners are divided into three categories:optical solutions based on macro-,micro-,and nanooptics.The physical principles,optical structure,performance parameters,and manufacturing process of different types of AR-HMD optical solutions are subsequently analyzed.Moreover,their advantages and disadvantages are investigated and evaluated.In addition,the bottlenecks and future development trends in the case of AR-HMD optical solutions are discussed. | Dewen Cheng Qiwei Wang Yue Liu Hailong Chen Dongwei Ni Ximeng Wang Cheng Yao Qichao Hou Weihong Hou Gang Luo Yongtian Wang | 2021 | Light(Advanced Manufacturing)2021，2，3： | 6 |
| 5 | Space efficient revocable IBE for mobile devices in cloud computing显示文摘.Dear editor,Revocation capacity is one of the main properties for an identity-based encryption(IBE),as in practice users’private keys are possibly leaked or expired.However,existing revocable IBE schemes[1–3]usually lack of short keys.Recently,Lin et al.[4]proposed a method to design space efficient revocable IBE scheme from non-monotonic key-policy attribute-based encryption scheme.But,it requires too many pairings(linear to the number of revoked users)to decrypt an IBE ciphertext.In this study,we overcome this problem by adopting the technique of server-aided revocation,recently proposed by Qin et al.[5]in ESORICS 2015.The main contribution is a new server-aided revocable IBE scheme,which can largely shift decryption overhead from local users to an untrusted cloud computing server,and significantly reduce the complexities of PKG’s(Private-Key Generator)key update information and server’s long-term identity-based public information(also called long-term transformation keys)with the comparison of previous(server-aided)revocable IBE schemes. | Baodong QIN Ximeng LIU Zhuo WEI Dong ZHENG | 2020 | Science China(Information Sciences)2020，63，3： | 3 |
| 6 | A Lightweight Secure Network Coding Scheme against Wiretapping显示文摘Existing works for securing network coding against wiretapping either incur high coding complexity or bring large bandwidth overhead.For exploiting the lightweight security mechanism for resource-constrained networks,an efficient secure coding scheme is proposed in conjunction with the inherent mixing characteristic of network coding.The key idea is to minimize the randomizing operations to the entire plaintext data.The proposed scheme is shown to have properties of lightweight security complexity and lower communication overhead compared with the existing traditional solutions,and can be easy in implementation and combination with classical cryptography techniques. | LIU Guangjun LIU Ximeng XIONG Jinbo ZHOU Hang | 2014 | Wuhan University Journal of Natural Sciences2014，19，2： | 3 |
| 7 | Design strategies for MOF-derived porous functional materials: Preserving surfaces and nurturing pores显示文摘MOFs are among the most popular precursors and templates for deriving various porous materials,where the derivatives can inherit a large surface area,abundant active sites for targeted functionalities and a high degree of porosity inherited from their parent MOFs.Those unique structural features make them promising candidates in multiple applications.More interestingly,the structure and properties of these MOF derivatives can be modulated by the choice of the parent MOFs and the design in the conversion process.In this overview,the transformation pathways from MOFs into their porous derivatives,the principles underlying these transformations,and the behavior of the MOF components in the transition process are discussed.Recently,there has been tremendous progress in preserving and enhancing the surface area,the amount of active sites and the level of porosity of the MOF-derived materials for targeted applications,from the perspectives of both customizing the parent MOFs and tailoring the transformation process.To develop the rationally designed MOF-derived materials and thus to elucidate the precursor-process-product correlations,some typical examples of the MOF derivatives applied in electrochemical energy storage and conversion,water treatment,gas sensing,and biomedicine are discussed to demonstrate the effectiveness of the key design strategies. | Ximeng Liu Lei Zhang John Wang | 2021 | Journal of Materiomics2021，7，3： | 2 |
| 8 | A framework for mixed-use decomposition based on temporal activity signatures extracted from big geo-data显示文摘Mixed use has been extensively applied as an urban planning principle and hinders the study of single urban functions.To address this problem,it is worth decomposing the mixed use.Inspired by the concept of spectral unmixing in remote sensing applications,this paper proposes a framework for mixed-use decomposition based on big geo-data.Mixeduse decomposition in terms of human activities differs from traditional land use research,and it is more reasonable to infer the actual urban function of land.The framework consists of four steps,namely temporal activity signature extraction,urban function base curve extraction,mixeduse decomposition,and result validation.First,the temporal activity signatures(TASs)of each zone are extracted as the proxy of human activity patterns.Second,the diurnal TASs of routine activities are extracted as urban function base curves(i.e.endmembers).Third,a linear decomposition model is used to decompose the mixed use and obtain multiple results(urban function composition,dynamic activity proportions,and the mixing index).Finally,result validation strategies are concluded.This framework offers method extensibility and has few requirements for the input data.It is validated by means of a case study of Beijing,based on a social media check-in dataset. | Lun Wu Ximeng Cheng Chaogui Kang Di Zhu Zhou Huang Yu Liu | 2020 | International Journal of Digital Earth2020，13，6： | 2 |
| 9 | Electrochromic-Induced Rechargeable Aqueous Batteries: An Integrated Multifunctional System for Cross-Domain Applications显示文摘Multifunctional electrochromic-induced rechargeable aqueous batteries(MERABs) integrate electrochromism and aqueous ion batteries into one platform, which is able to deliver the conversion and storage of photo-thermal-electrochemical sources.Aqueous ion batteries compensate for the drawbacks of slow kinetic reactions and unsatisfied storage capacities of electrochromic devices. On the other hand, electrochromic technology can enable dynamically regulation of solar light and heat radiation. However,MERABs still face several technical issues, including a trade-off between electrochromic and electrochemical performance, low conversion efficiency and poor service life. In this connection, novel device configuration and electrode materials, and an optimized compatibility need to be considered for multidisciplinary applications. In this review,the unique advantages, key challenges and advanced applications are elucidated in a timely and comprehensive manner. Firstly, the prerequisites for effective integration of the working mechanism and device configuration, as well as the choice of electrode materials are examined. Secondly, the latest advances in the applications of MERABs are discussed, including wearable, self-powered, integrated systems and multisystem conversion. Finally, perspectives on the current challenges and future development are outlined, highlighting the giant leap required from laboratory prototypes to large-scale production and eventual commercialization. | Qi Zhao Zhenghui Pan Binbin Liu Changyuan Bao Ximeng Liu Jianguo Sun Shaorong Xie Qing Wang John Wang Yanfeng Gao | 2023 | Nano-Micro Letters2023，15，6： | 2 |
| 10 | Auto-scalable and fault-tolerant load balancing mechanism for cloud computing based on the proof-of-work election显示文摘Load balancing mechanism in technologies such as cloud computing has provided a huge opportunity for the development of large-scale projects.Although the conventional view is to build mechanisms that adopt a dynamic load balancing strategy,existing strategies cannot automatically scale platform(network)servers(nodes)to adapt for dynamic requests,but only guarantee load balancing for the pre-deployed nodes,thereby increasing resource consumption and decreasing networks’efficiency.We contend that existing load balancing mechanisms are inadequate for deploying dynamic applications.In this regard,we first adopt both load balancing and cloud computing virtualization technologies to modularly design a load balancing mechanism that provides a dynamically auto-scalable solution for large-scale and dynamic computing scenarios.Furthermore,we adopt the proof-of-work consensus,for a novel use during the lifecycle of master nodes in case of system failure caused by a failed master node,to demonstrate a fault-tolerant load balancing mechanism.We theoretically evaluate the security requirement of our mechanism and analyze its performance.Experimental results show that the mechanism supports auto-scalability and has a better performance compared to existing mechanisms such as the ordinary cluster. | Xiaoqin FENG Jianfeng MA Shaobin LIU Yinbin MIAO Ximeng LIU | 2022 | Science China(Information Sciences)2022，65，1： | 2 |
| 11 | AWI-BS: An adaptive weight incentive for blockchain sharding显示文摘The sharding technique enables blockchain to process transactions in parallel by dividing blockchain nodes into small groups,each of which handles a subset of all transactions.One of the issues with blockchain sharding is generating a large number of cross-shard transactions that need to be checked on the output shard as well as the destination shard.Our analysis suggests that the processing efficiency of cross-shard transactions is consistent with the barrel effect,i.e.,that efficiency is more dependent on slower processing shard.Most of the existing studies focus on how to deal with cross-shard transactions,but neglecting the fact that the relative independence between sharding results in different incentive costs between sharding.We perform a sharding analysis on 100,000 real transactions data on Ethereum,and the results show that there is a large difference in gas prices between different shards indeed.In this paper,we propose an Adaptive Weight Incentive(AWI)for Blockchain Sharding,which uses adaptive weight in place of traditional incentive,to address the problem of differing incentive costs for each shard.Take Ethereum as an example,AWI-BS computes the weight of a transaction as a function of a combination of the underlying gas price,the latency of the transaction,and the urgency of the transaction.Then the node chooses which transaction to pack based on the AWI-BS.Lastly,we also perform an in-depth analysis of AWI-BS's security and effectiveness.The evaluation indicates that AWI-BS outperforms the other alternatives in terms of transaction confirmation latency,transaction hit rate,and system throughput. | Zuobin Ying Laican Song Deng Chen Wusong Lan Ximeng Liu | 2023 | Journal of Information and Intelligence2023，1，2： | 1 |
| 12 | VKSE-MO: verifiable keyword search over encrypted data in multi-owner settings显示文摘Searchable encryption(SE) techniques allow cloud clients to easily store data and search encrypted data in a privacy-preserving manner, where most of SE schemes treat the cloud server as honest-but-curious.However, in practice, the cloud server is a semi-honest-but-curious third-party, which only executes a fraction of search operations and returns a fraction of false search results to save its computational and bandwidth resources. Thus, it is important to provide a results verification method to guarantee the correctness of the search results. Existing SE schemes allow multiple data owners to upload different records to the cloud server,but these schemes have very high computational and storage overheads when applied in a different but more practical setting where each record is co-owned by multiple data owners. To address this problem, we develop a verifiable keyword search over encrypted data in multi-owner settings(VKSE-MO) scheme by exploiting the multisignatures technique. Thus, our scheme only requires a single index for each record and data users are assured of the correctness of the search results in challenging settings. Our formal security analysis proved that the VKSE-MO scheme is secure against a chosen-keyword attack under a random oracle model. In addition, our empirical study using a real-world dataset demonstrated the efficiency and feasibility of the proposed scheme in practice. | Yinbin MIAO Jianfeng MA Ximeng LIU Junwei ZHANG Zhiquan LIU | 2017 | Science China(Information Sciences)2017，60，12： | 1 |
| 13 | Lightning-fast and privacy-preserving outsourced computation in the cloud显示文摘In this paper,we propose a framework for lightning-fast privacy-preserving outsourced computation framework in the cloud,which we refer to as LightCom.Using LightCom,a user can securely achieve the outsource data storage and fast,secure data processing in a single cloud server different from the existing multi-server outsourced computation model.Specifically,we first present a general secure computation framework for LightCom under the cloud server equipped with multiple Trusted Processing Units(TPUs),which face the side-channel attack.Under the LightCom,we design two specified fast processing toolkits,which allow the user to achieve the commonly-used secure integer computation and secure floating-point computation against the side-channel information leakage of TPUs,respectively.Furthermore,our LightCom can also guarantee access pattern protection during the data processing and achieve private user information retrieve after the computation.We prove that the proposed LightCom can successfully achieve the goal of single cloud outsourced data processing to avoid the extra computation server and trusted computation server,and demonstrate the utility and the efficiency of LightCom using simulations. | Ximeng Liu Robert H.Deng Pengfei Wu Yang Yang | 2020 | Cybersecurity2020，3，1： | 1 |
| 14 | Comparing the effects of three decoctions for coronavirus disease 2019 on severe acute respiratory syndrome coronavirus 2-related toll-like receptors-mediated inflammations显示文摘OBJECTIVE:To compare the anti-inflammatory effects of three decoctions for coronavirus disease 2019(COVID-19)[Qingfei Paidu Tang(清肺排毒汤),QF;Huashi Baidu Fang(化湿败毒方),HS;Xuanfei Baidu Fang(宣肺败毒方),XF]in parallelly experimental models by using severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)-related toll-like receptors(TLRs)ligands and its spike(S)protein as stimulators.METHODS:RAW264.7 macrophages were used to investigate the effects of three decoctions on the inflammations induced by R848,poly(I:C),lipopolysaccharide(LPS),as well as SARS-CoV-2 S protein,in vitro.Mouse endotoxemia model was used for evaluating their anti-inflammatory actions in vivo.The levels of monocyte chemoattractant protein-1(MCP-1),interleukin-6(IL-6),tumor necrosis factorα(TNF-α),and interferon-β(IFN-β)were determined by enzyme-linked immunosorbent assay.RESULTS:Three decoctions could decrease supernatant IL-6,MCP-1,nitric oxide(NO)and TNF-αto varying degrees in activated macrophages.Meanwhile,they did not increase the level of antiviral cytokine IFN-βinduced by TLR3 and TLR4 ligands,but rather suppressed it,suggesting that externally administrated type I interferons(IFN-Is)may be needed for the severe COVID-19 cases characterized by deficient IFN-Is.In mouse endotoxemia model,all three decoctions could suppress serum pro-inflammatory cytokines,but only QF could relieve hypothermia and antagonize diarrhea.CONCLUSIONS:Collectively,our study compared,for the first time,the effects of three decoctions on SARSCoV-2-related TLRs-mediated inflammations.In vitro,three decoctions exert similar suppressive effects on inflammatory cytokines induced by SARS-CoV-2-related TLRs ligands,as well as S protein.In vivo,QF possesses the strongest effects compared with HS and XF.These findings may provide not only experimental basis for the clinical use of three decoctions,but also a rationale for the combination therapy with IFN-Is. | LI Ximeng KANG Yuan LI Wenjing LIU Zhuangzhuang XU Zhenlu ZHANG Xiaoyu CAI Runlan GAO Yuan QI Yun | 2023 | Journal of Traditional Chinese Medicine2023，43，1： | 1 |
| 15 | A traditional Chinese herbal formula improves pressure ulcers in paraplegic patients:A randomized,parallel-group,retrospective trial显示文摘 | LIU Xin QING Ximeng SONG Hua | 2013 | Experimental and therapeutic medicine2013，5，6： | 1 |
| 16 | Chevron-type graphene nanoribbons with a reduced energy band gap:Solution synthesis,scanning tunneling microscopy and electrical characterization显示文摘Graphene nanoribbons(GNRs)attract a growing interest due to their tunable physical properties and promise for device applications.A variety of atomically precise GNRs have recently been synthesized by on-surface and solution approaches.While on-surface GNRs can be conveniently visualized by scanning tunneling microscopy(STM),and their electronic structure can be probed by scanning tunneling spectroscopy(STS),such characterization remains a great challenge for the solution-synthesized GNRs.Here,we report solution synthesis and detailed STM/STS characterization of atomically precise GNRs with a meandering shape that are structurally related to chevron GNRs but have a reduced energy band gap.The ribbons were synthesized by Ni0-mediated Yamamoto polymerization of specially designed molecular precursors using triflates as the leaving groups and oxidative cyclodehydrogenation of the resulting polymers using Scholl reaction.The ribbons were deposited onto III-V semiconducting InAs(110)substrates by a dry contact transfer technique.High-resolution STM/STS characterization not only confirmed the GNR geometry,but also revealed details of electronic structure including energy states,electronic band gap,as well as the spatial distribution of the local density of states.The experimental STS band gap of GNRs is about 2 eV,which is very close to 2.35 eV predicted by the density functional theory simulations with GW correction,indicating a weak screening effect of InAs(110)substrate.Furthermore,several aspects of GNR-InAs(110)substrate interactions were also probed and analyzed,including GNR tunable transparency,alignment to the substrate,and manipulations of GNR position by the STM tip.The weak interaction between the GNRs and the InAs(110)surface makes InAs(110)an ideal substrate for investigating the intrinsic properties of GNRs.Because of the reduced energy band gap of these ribbons,the GNR thin films exhibit appreciably high electrical conductivity and on/off ratios of about 10 in field-effect transistor measurements,suggesting their promise for device applications. | Ximeng Liu Gang Li Alexey Lipatov Tao Sun Mohammad Mehdi Pour Narayana R.Aluru Joseph W.Lyding Alexander Sinitskii | 2020 | Nano Research2020，13，6： | 0 |
| 17 | Tuning Structures and Microenvironments of Cu-Based Catalysts for Sustainable CO_(2) and CO Electroreduction显示文摘CONSPECTUS:The carbon balance has been disrupted by the widespread use of fossil fuels and subsequent excessive emissions of carbon dioxide(CO_(2)),which has become an increasingly critical environmental challenge for human society.The production and use of renewable energy sources and/or chemicals have been proposed as important strategies to reduce emissions,of which the electrochemical CO_(2)(or CO)reduction reaction(CO_(2)RR/CORR)in the aqueous systems represents a promising approach.Benefitted by the capacity of manufacturing high-value-added products(e.g.,ethylene,ethanol,formic acid,etc.)with a net-zero carbon emission,copper-based CO_(2)RR/CORR powered by sustainable electricity is regarded as a potential candidate for carbon neutrality.However,the diversity of selectivities in copper-based systems poses a great challenge to the research in this field and sets a great obstacle for future industrialization.To date,scientists have revealed that the electrocatalyst design and preparation play a significant role in achieving efficient and selective CO_(2)-to-chemical(or CO-to-chemical)conversion.Although substantial efforts have been dedicated to the catalyst preparation and corresponding electrosynthesis of sustainable chemicals from CO_(2)/CO so far,most of them are still derived from empirical or random searches,which are relatively inefficient and cost-intensive.Most of the mechanism studies have suggested that both intrinsic properties(such as electron states)and extrinsic environmental factors(such as surface energy)of a catalyst can significantly alter catalytic performance.Thus,these two topics are mainly discussed for copper-based catalyst developments in this Account.Here,we provided a concise and comprehensive introduction to the well-established strategies employed for the design of copperbased electrocatalysts for CO_(2)RR/CORR.We used several examples from our research group,as well as representative studies of other research groups in this field during the recent five years,with the perspectives of tuning local electron states,regulating alloy phases,modifying interfacial coverages,and adjusting other interfacial microenvironments(e.g.,molecule modification or surface energy).Finally,we employed the techno-economic assessment with a viewpoint on the future application of CO_(2)/CO electroreduction in manufacturing sustainable chemicals.Our study indicates that when carbon price is taken into account,the electrocatalytic CO_(2)-to-chemical conversion can be more market-competitive,and several potential value-added products including formate,methanol,ethylene,and ethanol can all make profits under optimal operating conditions.Moreover,a downstream module employing traditional chemical industrial processes(e.g.,thermal polymerization,catalytic hydrolysis,or condensation process)will also make the whole electrolysis system profitable in the future.These design principles,combined with the recent advances in the development of efficient copper-based electrocatalysts,may provide a low-cost and long-lasting catalytic system for a profitable industrial-scale CO_(2)RR in the future. | Ximeng Lv Zhengzheng Liu Chao Yang Yali Ji Gengfeng Zheng | 2023 | Accounts of Materials Research2023，4，3： | 0 |
| 18 | Return just your search:privacy-preserving homoglyph search for arbitrary languages显示文摘Searchable encryption is an effective way to ensure the security and availability of encrypted outsourced cloud data.Among existing solutions,the keyword exact search solution is relatively inflexible,while the fuzzy keyword search solution either has a high index overhead or suffers from the falsepositive.Furthermore,no existing fuzzy keyword search solution considers the homoglyph search on encrypted data.In this paper,we propose an efficient privacy-preserving homoglyph search scheme supporting arbitrary languages(POSA,in short).We enhance the performance of the fuzzy keyword search in three aspects.Firstly,we formulate the similarity of homoglyph and propose a privacy-preserving homoglyph search.Secondly,we put forward an index build mechanism without the false-positive,which reduces the storage overhead of the index and is suitable for arbitrary languages.Thirdly,POSA returns just the user’s search,i.e.,all returned documents contain the search keyword or its homoglyph.The theoretical analysis and experimental evaluations on real-world datasets demonstrate the effectiveness and efficiency of POSA. | Bowen ZHAO Shaohua TANG Ximeng LIU Yiming WU | 2022 | Frontiers of Computer Science2022，16，2： | 0 |
| 19 | PROCESS FOR SYNTHESIS OF 3-(N-ETHYL-N- METHOXYLONEMETHYL) AMINO-4-METHYL ACCETANILIDE显示文摘 | Liu Yanying Li Kunlan Wang Ximeng | 2010 | 精细石油化工2010，27，6： | 0 |
| 20 | P2HBT:Partially Policy Hidden E-Healthcare System with Black-Box Traceability显示文摘Electronic health record(EHR),as the core of the e-healthcare system,is an electronic version of patient medical history,which records personal healthrelated information.EHR embodies the value of disease monitoring through large-scale sharing via the Cloud service provider(CSP).However,the health data-centric feature makes EHR more preferable to the adversaries compared with other outsourcing data.Moreover,there may even be malicious users who deliberately leak their access privileges for benefits.An e-healthcare system with a black-box traceable and robust data security mechanism is presented for the first time.Specifically,we propose an effective P2 HBT,which can perform fine-grained access control on encrypted EHRs,prevent the leakage of privacy contained in access policies,and support tracing of traitors.Under the standard model,the scheme is proved fully secure.Performance analysis demonstrates that P2HBT can achieve the design goals and outperform existing schemes in terms of storage and computation overhead. | YING Zuobin SI Yuanping MA Jianfeng JIANG Wenjie XU Shengmin LIU Ximeng | 2021 | Chinese Journal of Electronics2021，30，2： | 0 |
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