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检索条件"主题词=database encryption"

共 59 条记录，以下是31-40 订阅

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Performance evaluation on encrypted - non encrypted database fields containing IoT data 19

Performance evaluation on encrypted - non encrypted database...

引用

23rd Annual International Symposium database Applications and Engineering (IDEAS)

作者： Asiminidis, Christodoulos Georgiadis, Ioannis Syndoukas, Dimitrios Kokkonis, George Kontogiannis, Sotirios Univ Ioannina Dept Math Lab Team Distributed Microcomp Syst Ioannina Greece Techn Edu Inst Western Macedonia Dept Business Adm Grevena Greece

ISBN: (纸本)9781450362498

Encrypted data transmitted from secure wireless channels as part of Internet of Things (IoT) infrastructures are mainly stored in database tables using plaintext records. As IoT data content confidence in supportive A.I. actions radically increases, the selection and use of database encryption is essential in terms of data integrity safety as well as IoT operations or decisions validity and non repudiation. Taking into account the amount of stored IoT data, data filtering and processing overhead needed for aptly decision making, it is essential for a developer to seriously take into account encryption-decryption queries overheads for big IoT data processing tasks, as well as extra time delays on encryption-decryption operations, since these translate into idle or receiving states energy expenditures at the wireless IoT motes.

关键词： database encryption Big data IoT performance evaluation

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Protecting Access Pattern Privacy in database Outsourcing Service

Protecting Access Pattern Privacy in Database Outsourcing Se...

引用

IEEE 27th International Conference on Advanced Information Networking and Applications Workshops (WAINA)

作者： Hue, T. B. P. Thuc, D. N. Thuy, T. B. D. Echizen, I. Wohlgemuth, S. Univ Sci VNU HCMC 227 Nguyen CuDist 5 Ho Chi Minh City Vietnam Natl Inst Informat Chiyoda Ku Tokyo Japan

ISBN: (纸本)9780769549521;9781467362399

The fact that the data owners outsource their data to external service providers introduces many security and privacy issues. Among them, the most significant research questions relate to data confidentiality and user privacy. encryption was regarded as a solution for data confidentiality. The privacy of a user is characterized by the query he poses to the server and its result. We explore the techniques to execute the SQL query over the encrypted data without revealing to the server any information about the query such as the query type or the query pattern, and its result. By implementing all the relational operators by using the unique selection operator on the server-side database with a constant number of elements in each time of selection, our proposal can defeat against the statistical attacks of the untrusted server compromising data confidentiality and user privacy.

关键词： database outsourcing database encryption user privacy access pattern privacy access privacy

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A Secure Range Query Processing Algorithm for the Encrypted database on the Cloud 1

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11th International Scientific Conference on Future Information Technology (FutureTech) / 10th International Conference on Multimedia and Ubiquitous Engineering (MUE)

作者： Kim, Hyeong-Il Choi, Munchul Kim, Hyeong-Jin Chang, Jae-Woo Jeonbuk Natl Univ Dept Comp Engn Jeonju South Korea

ISBN: (数字)9789811015366

ISBN: (纸本)9789811015366;9789811015359

Secure range query processing algorithms have been studied as the range query can be used as a baseline technique in various fields. However, when processing a range query, the existing methods fail to hide the data access patterns which can be used to derive the actual data items and the private information of a querying issuer. The problem is that the data access patterns can be exposed even though the data and query are encrypted. So, in this paper we propose a new range query processing algorithm on the encrypted database. Our method conceals the data access patterns while supporting efficient query processing by using our proposed encrypted index search scheme. Through the performance analysis, we show that the proposed range query processing algorithm can efficiently process a query while hiding the data access patterns.

关键词： database outsourcing database encryption Encrypted index structure Secure range query processing Data access patterns

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Randomly Partitioned encryption for Cloud databases

Randomly Partitioned Encryption for Cloud Databases

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28th Annual IFIP WG 11.3 Working Conference on Data and Applications Security and Privacy (DBSEC)

作者： Sanamrad, Tahmineh Braun, Lucas Kossmann, Donald Venkatesan, Ramarathnam Swiss Fed Inst Technol Syst Grp Dept Comp Sci Zurich Switzerland Microsoft Res Redmond CA USA

ISBN: (纸本)9783662439364;9783662439357

With the current advances in Cloud Computing, outsourcing data has never been so tempting. Along with outsourcing a database comes the privacy versus performance discussion. Order-Preserving encryption (OPE) is one of the most attractive techniques for database encryption since it allows to execute range and rank queries efficiently without decrypting the data. On the other hand, people are reluctant to use OPE-based techniques in practice because of their vulnerability against adversaries with knowledge of the domain, its frequency distribution and query logs. This paper formally defines three real world driven attacks, called Domain Attack, Frequency Attack and Query Log Attack, typically launched by an honest-but-curious database or systems administrator. We also introduce measures to capture the probability distribution of the adversary's advantage under each attacker model. Most importantly, we present a novel technique called Randomly Partitioned encryption (RPE) to minimize the adversary's advantage. Finally, we show that RPE not only withstands real world database adversaries, but also shows good performance that is close to state-of-art OPE schemes for both, read-and write-intensive workloads.

关键词： database encryption Efficient Query Processing Domain Attack Frequency Attack Query Log Attack Randomly Partitioned encryption

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An integrated approach for database security and fault tolerance

An integrated approach for database security and fault toler...

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International Conference on Information Technology - Coding and Computing

作者： Zhang, CN Zhong, H Univ Regina Dept Comp Sci Regina SK S4S 0A2 Canada

ISBN: (纸本)0769521088

This paper proposes a systematic approach to integrate database security (including database encryption and authentication) and fault tolerance so that the total overheads can be significantly reduced. An improved database encryption scheme with a consideration of fault tolerance are also presented and analyzed. The authentication and fault tolerance are realized by carefully designed checksums using redundant residue number systems (RRNS). The proposed authentication approach can not only check the data integrity of a record, but also ensure the data origin of a record in database systems. The integrated approach is able to correct a single error within each record. The proposed approach is ideal for many database applications in which both authentication and fault tolerance are required. Keywords: authentication, fault tolerance, database encryption, error detection, error correction, redundant residue number.

关键词： authentication fault tolerance database encryption error detection error correction redundant residue number

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Model-Driven Application-Level encryption for the Privacy of E-Health Data

Model-Driven Application-Level Encryption for the Privacy of...

引用

5th International Conference on Availability, Reliability and Security

作者： Ding, Yun Klein, Karsten InterComponentWare AG R&D Basis Technol Walldorf Germany

ISBN: (纸本)9780769539652

We propose a novel model-driven application-level encryption solution to protect the privacy and confidentiality of health data in response to the growing public concern about the privacy of health data. Domain experts specify sensitive data which are to be protected by encryption in the application's domain model. Security experts specify the cryptographic parameters used for the encryption in a security configuration. Both specifications are highly flexible to support different granularities of data to be encrypted and appropriate security levels. Based on the domain model, our code generator for Model-Driven Software Development generates code and configuration artifacts to control the encryption and decryption logic in the application and perform database schema modifications. Our encryption infrastructure outside the database (hence, application-level encryption) utilizes the security configuration to perform encryption and decryption. The generator relieves application developers from a significant amount of migration work required by application-level encryption. Hence, our approach combines the flexibility, security and independence from database vendors of application-level encryption and the transparency of database-level encryption. Our model-driven application-level encryption has been integrated into our eHealth Framework, a comprehensive platform for the development of electronic health care solutions. Our approach can be applied to other domains as well.

关键词： Security and Privacy in E-Health Privacy-Enhancing Technologies database encryption Cryptography

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Nonlinear order preserving index for encrypted database query in service cloud environments

Nonlinear order preserving index for encrypted database quer...

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2nd international workshop on workflow management in service and cloud computing

作者： Liu, Dongxi Wang, Shenlu CSIRO ICT Ctr Marsfield NSW 2122 Australia

The database services on cloud are appearing as an attractive way of outsourcing databases. When a database is deployed on a cloud database service, the data security and privacy becomes a big concern for users. A straightforward way to address this concern is to encrypt the database. However, after encryption, the database cannot be easily queried. In this paper, we propose a nonlinear order preserving scheme for indexing encrypted data, which facilitates the range queries over encrypted databases. The scheme is secure even there are a large number of duplicates in plaintexts. Moreover, our scheme allows the programmability of basic indexing expressions and thus provides the capability of hiding the distribution of plaintexts from the distribution of indexes. This scheme is suitable for long-standing databases because its use does not need any assumption on the characteristics of database data, such as their distribution, range and number, which may change dramatically over *** (c) 2013 John Wiley & Sons, Ltd.

关键词： database encryption cloud database secure index query

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Efficient Searching Over Encrypted database: Methodology and Algorithms 15th

Efficient Searching Over Encrypted Database: Methodology and...

引用

15th International Conference on Distributed Computing and Internet Technology (ICDCIT)

作者： Deshpande, Varad Das, Debasis BITS Pilani Dept CS&IS KK Birla Goa Campus Zuarinagar 403726 Goa India

ISBN: (纸本)9783030053666;9783030053659

database encryption is a process in which the data stored in the database are converted from plaintext (PT) to ciphertext (CT). The original data can be retrieved from the ciphertext with the help of a predefined key and a decryption scheme. This way, only the appropriate authority that has the key can access the data. Thus, encrypted databases help ensure data confidentiality and avoid data leaks. In this paper, we will describe a modification to the Secure K-Nearest Neighbours (SkNN) [3] technique to construct an encrypted database system. We briefly discuss some of the existing encryption models and the principles involved in their construction and look at some of the issues that plague these models. The motivation behind this paper is to devise a method that allows for strong database encryption, while at the same time facilitating efficient search over the encrypted data. In order to achieve this, we suggest an approach which combines RSA with the SkNN scheme.

关键词： database encryption Secure K-nearest neighbours (SkNN) RSA

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An Efficient Fine-grained Access Control Mechanism for database Outsourcing Service

An Efficient Fine-grained Access Control Mechanism for Datab...

引用

3rd International Conference on Information Security and Intelligent Control (ISIC)

作者： Hue, T. B. P. Luyen, G. N. Kha, N. D. Wohlgemuth, S. Echizen, I. Thuc, D. N. Thuy, T. B. D. Univ Sci VNU HCMC 227 Nguyen Cu Ho Chi Minh City Vietnam Natl Inst Informat Tokyo Japan

ISBN: (纸本)9781467325882;9781467325875

In database outsourcing service, the data owners store their databases at the servers which belong to potentially untrusted service providers. It is necessary to protect outsourced data from unauthorized access. However, by using existing access control mechanisms, data owners are incapable of controlling access to individual sensitive attributes of their data. In this paper, we propose an Efficient Fine-grained Access Control mechanism, named EFGAC, which can restrict access to the more sensitive columns of the shared relation. EFGAC can handle most of dynamic updates on users or dataset or access rights efficiently without the need of the systematic reconstruction or database re-keying. Experimental results show that EFGAC can save a worthy amount of key derivation time of users and reduce the number of keys held by each user in the system. Especially, we suggest strategies which are useful for the data owner in deciding the necessary number of keys in both static and dynamic cases of outsourcing.

关键词： Column-level access control database outsourcing database encryption

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A study of UniSQL encryption system: Case study of developing SAMS

A study of UniSQL encryption system: Case study of developin...

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9th International Conference on Advanced Communication Technology (ICACT 2007)

作者： Kim, Yong Soon Hong, Eui Kyeong KERIS NEIS Ctr 22-1 Ssangnim Dong Seoul 100400 South Korea Univ Seoul Dept Comp Sci Seoul South Korea

ISBN: (纸本)9788955191318

SAMS (School Affairs Management System) was developed as one of the subsequent NEIS (National Education Information System) e-Government projects by Ministry of Education and Human Resource Development (MOE&HRD) in Korea [2][3]. Politically NEIS was installed and managed in each provincial Office of Education so that huge amount of students' personal information is stored in central integrated NEIS database system. But Korea Teachers' Union and some of civilian groups have raised a possibility of infringement on student's privacy. Education Informatization Committee, as an advisory organization, proposed separation of school administration section from NEIS as of March 2004 to resolve the conflicts between Government and Teachers Union. SAMS was originated in separated school administration. When the SAMS project was started, use of domestic S/W industries are encouraged and guided. During the SAMS project, Linux and UniSQL was adopted and improved in order to meet the needs of sophisticated system. So, database level of encryption system based on commercial UniSQL was studied and designed in order to increase security and not to harm infringement on privacy. In this paper, we show the procedural step and consideration of design UniSQL embedded encryption and decryption based on our experience. Design of architecture on UniSQL version 6.3 will be touched in this paper as well as detailed encryption module. After implementing encryption system on UniSQL, we simulated performance and compared query-processing factors between encryption embedded UniSQL and UniSQL without one. The results of performance evaluation shows reasonable performance compared with non-encryption function.

关键词： UniSQL database encryption DB security privacy SAMS NEIS e-government

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