A Novel Provable Data Possession Scheme Based on Geographic Location Attribute

Increment of mobile cloud video motivates mobile users to utilize cloud storage service to address their demands, cloud storage provider always furnish a location-independent platform for managing user＇s data. However, mobile users wonder if their cloud video data leakage or dynamic migration to illegal service providers. In this paper, we design a novel provable data possession protocol based on data geographic location attribute, which allows data owner to auditing the integrity of their video data, which put forward an ideal choice for remote data possession checking in the mobile cloud storage. In our proposed scheme, we check out whether the video data dynamic migrate to an unspecified location （such as： overseas） by adding data geographic location attribute tag into provable data possession protocol. Moreover, we make sure the security of our proposed scheme under the Computational Diffic-Hellman assumption. The analysis and experiment results demonstrate that our proposed scheme is provably secure and efficient.

Blockchain-Based Light-Weighted Provable Data Possession for Low Performance Devices

Provable Data Possession(PDP)schemes have long been proposed to solve problem of how to check the integrity of data stored in cloud service without downloading.However,with the emerging of network consisting of low performance devices such as Internet of Things,we find that there are still two obstacles for applying PDP schemes.The first one is the heavy computation overhead in generating tags for data blocks,which is essential for setting up any PDP scheme.The other one is how to resist collusion attacks from third party auditors with any possible entities participating the auditing.In this paper,we propose a novel blockchain-based light-weighted PDP scheme for low performance devices,with an instance deployed on a cloud server.We design a secure outsourced tag generating method for low performance devices,which enables a kind of“hash-sign-switch”two-phase tag computing.With this method,users with low performance devices can employ third party auditors to compute modular exponential operations that accounts for the largest portion of computation overhead in tag generation,without leaking their data content.Chaincodes in blockchain network ensure the correctness of such outsourcing and prevent collusion attacks.The security analysis and performance evaluation prove that our scheme is both secure and efficient.

Reducing Computational and Communication Complexity for Dynamic Provable Data Possession

Nowadays, an increasing number of persons choose to outsource their computing demands and storage demands to the Cloud. In order to ensure the integrity of the data in the untrusted Cloud, especially the dynamic files which can be updated online, we propose an improved dynamic provable data possession model. We use some homomorphic tags to verify the integrity of the file and use some hash values generated by some secret values and tags to prevent replay attack and forgery attack. Compared with previous works, our proposal reduces the computational and communication complexity from O(logn) to O(1). We did some experiments to ensure this improvement and extended the model to file sharing situation.

Possessions Ceded for the Benefit of the Hospitals and Churches From the Sighisoara County

Transilvania is a province of the actual state of Romania, geographically situated in the middle of the country, in the inner arch of the Carpathians. Starting with the 10th century, the territory of Transilvania became attractive for the neighboring Hungarian royalty and later on, in the 1 lth century it was annexed into Hungary. For a better control of the newly annexed territory and in order to convert the orthodox population to Catholicism, the Hungarian rulers brought the Szeklers to Transilvania and two centuries later, German originating populations, from Rhine, Luxemburg, and Saxony （the name of Sas people, or Saxon of Transilvania derives from ＂Saxony＂）. The aim of this paper is to focus on the Sighisoara County, namely on the easement of certain areas for temporary or permanent maintenance or use by the church and hospitals in the region. That was a common practice in Medieval Europe aimed at ensuring the survival means for these institutions. However, it was not the only one to serve this goal. There were also donations on behalf of various people or allocations of money by the county authorities. The documents attesting this are unpublished, unedited and are to be found in the archives of the Brasov County, Budapest, and Vienna. They are the stepping stone of this paper and hence, they grant its originality. The objectives of the paper are to bring arguments in favor of the thesis that community money was directed towards meeting the needs of the hospitals, as well as towards supporting the widows, the orphans, and the needy ones. Worth noting in this respect is the management of the funds ceded to the church and county hospitals and that actually benefitted the whole community. Moreover, the paper also emphasizes the role played by education, since the latter is an important landmark for a community＇s development level

Analysis of bona fide acquisition under possession reformulation

The system of bona fide acquisition of movables is a very important system in civil law since modem times. However, in modem society, the further development of concept delivery makes the phenomenon of separation between possession and ownership become more and more universal. There is a potential conflict between possession reform and the announcement of property right of property as a sign of delivery, which has been brought up again in civil law circles. Based on the measure of interest and value analysis, on the possession case of bona fide acquisition system is discussed and reflection, in under the bona fide possession of the application, the modified say. With a view to China＇ s ongoing property rights legislation to benefit.

The Enclosed Personal Space and Female Identity Construction in A. S. Byatt's Possession

From the perspective of feminism, by analyzing single intellectual women's living states in enclosed personal spaces, andcomparing their different spatial changes triggered by external intrusions, this essay intends to explore Byatt's ambivalent attitudestowards the feminists' pursuit for a room of one's own, and point out the significance of harmonious co-existence between men andwomen to female identity construction.

Paradise Archetype in Possession

A.S.Byatt's Possession has its own appraisal of public and critic alike for its original structure, as well as for the novelty and complexity of its themes. With Northrop Frye's archetypal criticism, this paper analyzes the epic poems"The Garden of Proserpina"so as to identify the hidden creation theme from paradise archetype.

The Quest Motif in Possession

The author of the paper analyzes the story"Glass Coffin"in A. S. Byatt's Possession and compares it with Brothers Grimm's fairy tale with the same name. Through the study, the author identifies the quest motif from our modern hero's discovery journey in Possession.

Sec-Auditor:A Blockchain-Based Data Auditing Solution for Ensuring Integrity and Semantic Correctness

Currently,there is a growing trend among users to store their data in the cloud.However,the cloud is vulnerable to persistent data corruption risks arising from equipment failures and hacker attacks.Additionally,when users perform file operations,the semantic integrity of the data can be compromised.Ensuring both data integrity and semantic correctness has become a critical issue that requires attention.We introduce a pioneering solution called Sec-Auditor,the first of its kind with the ability to verify data integrity and semantic correctness simultaneously,while maintaining a constant communication cost independent of the audited data volume.Sec-Auditor also supports public auditing,enabling anyone with access to public information to conduct data audits.This feature makes Sec-Auditor highly adaptable to open data environments,such as the cloud.In Sec-Auditor,users are assigned specific rules that are utilized to verify the accuracy of data semantic.Furthermore,users are given the flexibility to update their own rules as needed.We conduct in-depth analyses of the correctness and security of Sec-Auditor.We also compare several important security attributes with existing schemes,demonstrating the superior properties of Sec-Auditor.Evaluation results demonstrate that even for time-consuming file upload operations,our solution is more efficient than the comparison one.

Towards Comprehensive Provable Data Possession in Cloud Computing

To check the remote data integrity in cloud computing,we have proposed an efficient and full data dynamic provable data possession（PDP） scheme that uses a SN（serial number）-BN（block number） table to support data block update.In this article,we first analyze and test its performance in detail.The result shows that our scheme is efficient with low computation,storage,and communication costs.Then,we discuss how to extend the dynamic scheme to support other features,including public auditability,privacy preservation,fairness,and multiple-replica checking.After being extended,a comprehensive PDP scheme that has high efficiency and satisfies all main requirements is provided.

Human Lives Are More Valuable Than Material Possessions——My Reflections on "Face to Face with Hurricane Camille"

“Face to face With Hurricane Camilleisa Piece of narration writ-ten by Joseph P.Blank.It has been adopted by text-book compilers of various countries ever since its first publication in The Readers Digest,March1970.A Searlyas1973,Nat-aliC.

“爵”世珠宝——Possession永恒的爱

代表着无尽爱意的Possession系列宛如一个个真爱故事,讲述着男女间永恒不变的情愫……2007之夏,伯爵再度推出最新Possession系列珠宝,"永恒之爱"是该系列的设计主题。隐喻着时光如水,Possession系列指环由两个紧扣的圈环组成,像两个缠绵相拥的舞者,一起捕捉时光的永恒。两枚指环线条精简。

PIAGET 伯爵Possession系列2011派对

拥抱与自由的完美共存，恒久和挚爱的精致艺术．伯爵Possession系列2011派对于10月26日在上海科技馆举行。双环璀璨光彩持续绽放，灵动魅力愈加动人。指间缱绻相扣，温情肆意流转，Possession系列“拥抱的艺术”在这场缤纷绚丽的风尚盛事中得到了完美的呈现。

Pursuit of Possessions

今日是除夕,央视的春节联欢晚会正在进行。我看了大约一个多小时,觉得兴味寡淡:小品无新意,歌舞无创意,戏曲不如意,观众不满意,整台春节晚会简直就成了“大腕的葬礼”。(编者按:无论是和亲朋聊聊,还是上网瞧瞧,或是翻开各地报纸看看,对央视除夕晚会的指责成了春节期间的“共同主题”。)还是回到自己的书斋吧。

Blockchain-based Privacy-Preserving Group Data Auditing with Secure User Revocation

Progress in cloud computing makes group data sharing in outsourced storage a reality.People join in group and share data with each other,making team work more convenient.This new application scenario also faces data security threats,even more complex.When a user quit its group,remaining data block signatures must be re-signed to ensure security.Some researchers noticed this problem and proposed a few works to relieve computing overhead on user side.However,considering the privacy and security need of group auditing,there still lacks a comprehensive solution to implement secure group user revocation,supporting identity privacy preserving and collusion attack resistance.Aiming at this target,we construct a concrete scheme based on ring signature and smart contracts.We introduce linkable ring signature to build a kind of novel meta data for integrity proof enabling anonymous verification.And the new meta data supports secure revocation.Meanwhile,smart contracts are using for resisting possible collusion attack and malicious re-signing computation.Under the combined effectiveness of both signature method and blockchain smart contracts,our proposal supports reliable user revocation and signature re-signing,without revealing any user identity in the whole process.Security and performance analysis compared with previous works prove that the proposed scheme is feasible and efficient.

Blockchain-Based Privacy-Preserving Public Auditing for Group Shared Data

Cloud storage has been widely used to team work or cooperation devel-opment.Data owners set up groups,generating and uploading their data to cloud storage,while other users in the groups download and make use of it,which is called group data sharing.As all kinds of cloud service,data group sharing also suffers from hardware/software failures and human errors.Provable Data Posses-sion(PDP)schemes are proposed to check the integrity of data stored in cloud without downloading.However,there are still some unmet needs lying in auditing group shared data.Researchers propose four issues necessary for a secure group shared data auditing:public verification,identity privacy,collusion attack resis-tance and traceability.However,none of the published work has succeeded in achieving all of these properties so far.In this paper,we propose a novel block-chain-based ring signature PDP scheme for group shared data,with an instance deployed on a cloud server.We design a linkable ring signature method called Linkable Homomorphic Authenticable Ring Signature(LHARS)to implement public anonymous auditing for group data.We also build smart contracts to resist collusion attack in group auditing.The security analysis and performance evalua-tion prove that our scheme is both secure and efficient.

Human Habitats and Malaria Vector Control in Benin: Current Situation and Implications for Effective Control

Long-lasting insecticide-treated nets (LLINs) and indoor residual spraying (IRS) are the main indoor malaria vector tools control tools. The study examined housing characteristics and investigated the relationship between the total volume of household possessions, the volume of the sleeping room, and the hanging of LLINs. A total of 831 bedrooms were randomly selected in Benin in 2015. The findings showed that mud walls were predominant in rural areas (more than 75%), while metal roofs were common (77.3% - 97.9%). Battery-powered lighting was prevalent in rural areas in Northern (97%), while open-flame oil lamps were commonly used in rural areas in Southern (86%). The availability of correct bedding was low, ranging from 1% to 10% in all households. 20% of the bedrooms had at least 50% of their volume occupied by household possessions in urban areas. In rural areas, bedrooms without LLINs had a lower mean rate ratio of the volume occupied by possessions per the total volume of the room compared to bedrooms with at least one LLIN installed (p < 0.0001). The characteristics of human habitats are not favourable to the correct use of vector control intervention indoors. It is therefore important to improve people’s living conditions as the next step for malaria elimination.

Optimized Algorithms for Flexible Length-Based Authenticated Skip List

With the growing trend toward using cloud storage,the problem of efficiently checking and proving data integrity needs more consideration.Many cryptography and security schemes,such as PDP(Provable Data Possession) and POR(Proofs of Retrievability) were proposed for this problem.Although many efficient schemes for static data have been constructed,only a few dynamic schemes exist,such as DPDP(Dynamic Provable Data Possession).But the DPDP scheme falls short when updates are not proportional to a fixed block size.The FlexList-based Dynamic Provable Data Possession(FlexDPDP) was an optimized scheme for DPDP.However,the update operations(insertion,remove,modification)in Flex DPDP scheme only apply to single node at a time,while multiple consecutive nodes operation is more common in practice.To solve this problem,we propose optimized algorithms for multiple consecutive nodes,which including MultiNodes Insert and Verification,MultiNodes Remove and Verification,MultiNodes Modify and Verification.The cost of our optimized algorithms is also analyzed.For m consecutive nodes,an insertion takes O(m) + O(log N) + O(log m),where N is the number of leaf nodes of FlexList,a remove takes O(log/V),and a modification is the same as the original algorithm.Finally,we compare the optimized algorithms with original FlexList through experiences,and the results show that our scheme has the higher efficiency of time and space.

Analysis and Forecast on the Car Market of Our Country

This paper is intended to forecast the demand of the car market and the quantity of car possession in our country in 2000 by means of two statistics methods, i.e. tendency inference and regression analysis, and then its future growth tendency and market demand in our country are analyzed, according to the strategy requirement and the actual facts of our car industry development.

The Great Time,the Three Societies in the Globalization and the Three Souls of a Leftist Today

The first society would be the society of the good will.Already several times discussed,for which the value-oriented life of this year can no longer become an open problem.We define the second society provisionally as the one,which is fundamentally not constituted by the above described good will.In the following,we will try to identify it in this abstract description as the society of the“majority”.We see the third society in that political class or elite,which power has been built in the year 1989 and thus became the concretization of that establishment,with which the“first”society identified itself so totally.This tripartition of the real existing Left might also explain,why its political articulation is so fragmented.A Leftist should have today three souls:one of the winners(the elite,as a member of our third class),one of the losers(as a member of our second class)and one of the man of good will(as a member of our first class),who very enjoyed in its total identification with the own system.And authors have drawn some meaningful conclusions.