The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
This document describes CryptDB, a system that allows unmodified database servers to store and query encrypted data while providing confidentiality guarantees. It addresses the key challenges of supporting SQL queries on encrypted data, carefully defining and achieving privacy even with an untrusted database server, and making the system practical. CryptDB uses an SQL-aware encryption strategy with encryption schemes that allow queries to be executed directly on ciphertexts. It also employs adjustable query-based encryption to dynamically adjust encryption levels based on the queries used. Data is encrypted in layers from weaker to stronger encryption to efficiently adjust levels as needed. The goal is to enable standard SQL queries over encrypted data without client-side processing or database modifications while protecting data confidentiality.
IRJET- Continuous Auditing Approach to the Cloud Service Addressing Attri...IRJET Journal
This document proposes a continuous auditing approach for cloud services to address security attributes. It discusses using a third-party auditor to continuously audit selected security certification criteria of cloud services to increase trust in certificates over time as the cloud environment changes. The document outlines a system where data owners can delegate auditing to a trusted third party, allowing audits to be done publicly and efficiently while protecting data privacy. It describes desirable properties for such a public auditing system, such as minimizing overhead, protecting data privacy during audits, supporting dynamic data changes, and allowing the third party to efficiently handle multiple concurrent auditing tasks.
This document provides guidance on optimizing application performance for Azure. It discusses several techniques:
1. Using event-driven messaging in Service Bus to process messages asynchronously and improve throughput.
2. Avoiding lazy loading of entity data for complex processing scenarios to reduce unnecessary data retrieval.
3. Token size and use of encryption when using Access Control Service can impact performance; smaller tokens and optional encryption improve performance.
4. Data serialization is important for Azure applications due to costs for storage, transfers and caching; efficient serialization optimizes performance and costs.
IRJET- Secure Data Deduplication for Cloud Server using HMAC AlgorithmIRJET Journal
This document proposes using the HMAC algorithm to enable secure data deduplication on cloud servers. It first provides background on data deduplication and the need for integrity auditing and secure deduplication when storing data in the cloud. It then describes the HMAC algorithm and how it works to generate authentication tags for data using cryptographic hash functions and secret keys. The security of HMAC is analyzed and it is shown to be as secure as attacks on the underlying hash function. Finally, the document concludes that using HMAC allows for secure data deduplication by enabling the verification of data ownership through proof of ownership protocols while maintaining data integrity and confidentiality.
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Attribute based encryption with verifiable outsourced decryptionIEEEFINALYEARPROJECTS
To Get any Project for CSE, IT ECE, EEE Contact Me @ 09849539085, 09966235788 or mail us - ieeefinalsemprojects@gmail.co¬m-Visit Our Website: www.finalyearprojects.org
Attribute-based encryption (ABE) is a public-key based one-to-many encryption that allows users to encrypt and decrypt data based on user attributes.
A promising application of ABE is flexible access control of encrypted data stored in the cloud, using access polices and ascribed attributes associated with private keys and ciphertexts.One of the main efficiency drawbacks of the existing ABE schemes is that decryption involves expensive pairing operations and the number of such operations grows with the complexity of the access policy. Recently, Green et al. proposed an ABE system with outsourced decryption that largely eliminates the decryption overhead for users.
In such a system, a user provides an untrusted server, say a cloud service provider, with a transformation key that allows the cloud to translate any ABE cipher text satisfied by that user’s attributes or access policy into a simple cipher text, and it only incurs a small computational overhead for the user to recover the plaintext from the transformed cipher text.
Security of an ABE system with outsourced decryption ensures that an adversary (including a malicious cloud) will not be able to learn anything about the encrypted message; however, it does not guarantee the correctness of the transformation done by the cloud.
In this paper, we consider a new requirement of ABE with outsourced decryption: verifiability. Informally, verifiability guarantees that a user can efficiently check if the transformation is done correctly.
We give the formal model of ABE with verifiable outsourced decryption and propose a concrete scheme. We prove that our new scheme is both secure and verifiable, without relying on random oracles.
Finally, we show an implementation of our scheme and result of performance measurements, which indicates a significant reduction on computing resources imposed on users.
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This document summarizes research on improving the security and performance of distributed data aggregation systems. It discusses how existing systems like DDAS that rely on Blobseer for data storage lack sufficient security. The document proposes using Kerberos authentication to securely authenticate authorized clients and allow access to distributed databases. It also describes using adaptive Huffman coding for compressing aggregated data to reduce computation costs and speed up retrieval. The research aims to integrate these methods into DDAS to provide secure and fast retrieval of aggregated data stored in distributed systems.
This document describes CryptDB, a system that allows unmodified database servers to store and query encrypted data while providing confidentiality guarantees. It addresses the key challenges of supporting SQL queries on encrypted data, carefully defining and achieving privacy even with an untrusted database server, and making the system practical. CryptDB uses an SQL-aware encryption strategy with encryption schemes that allow queries to be executed directly on ciphertexts. It also employs adjustable query-based encryption to dynamically adjust encryption levels based on the queries used. Data is encrypted in layers from weaker to stronger encryption to efficiently adjust levels as needed. The goal is to enable standard SQL queries over encrypted data without client-side processing or database modifications while protecting data confidentiality.
IRJET- Continuous Auditing Approach to the Cloud Service Addressing Attri...IRJET Journal
This document proposes a continuous auditing approach for cloud services to address security attributes. It discusses using a third-party auditor to continuously audit selected security certification criteria of cloud services to increase trust in certificates over time as the cloud environment changes. The document outlines a system where data owners can delegate auditing to a trusted third party, allowing audits to be done publicly and efficiently while protecting data privacy. It describes desirable properties for such a public auditing system, such as minimizing overhead, protecting data privacy during audits, supporting dynamic data changes, and allowing the third party to efficiently handle multiple concurrent auditing tasks.
This document provides guidance on optimizing application performance for Azure. It discusses several techniques:
1. Using event-driven messaging in Service Bus to process messages asynchronously and improve throughput.
2. Avoiding lazy loading of entity data for complex processing scenarios to reduce unnecessary data retrieval.
3. Token size and use of encryption when using Access Control Service can impact performance; smaller tokens and optional encryption improve performance.
4. Data serialization is important for Azure applications due to costs for storage, transfers and caching; efficient serialization optimizes performance and costs.
IRJET- Secure Data Deduplication for Cloud Server using HMAC AlgorithmIRJET Journal
This document proposes using the HMAC algorithm to enable secure data deduplication on cloud servers. It first provides background on data deduplication and the need for integrity auditing and secure deduplication when storing data in the cloud. It then describes the HMAC algorithm and how it works to generate authentication tags for data using cryptographic hash functions and secret keys. The security of HMAC is analyzed and it is shown to be as secure as attacks on the underlying hash function. Finally, the document concludes that using HMAC allows for secure data deduplication by enabling the verification of data ownership through proof of ownership protocols while maintaining data integrity and confidentiality.
final Year Projects, Final Year Projects in Chennai, Software Projects, Embedded Projects, Microcontrollers Projects, DSP Projects, VLSI Projects, Matlab Projects, Java Projects, .NET Projects, IEEE Projects, IEEE 2009 Projects, IEEE 2009 Projects, Software, IEEE 2009 Projects, Embedded, Software IEEE 2009 Projects, Embedded IEEE 2009 Projects, Final Year Project Titles, Final Year Project Reports, Final Year Project Review, Robotics Projects, Mechanical Projects, Electrical Projects, Power Electronics Projects, Power System Projects, Model Projects, Java Projects, J2EE Projects, Engineering Projects, Student Projects, Engineering College Projects, MCA Projects, BE Projects, BTech Projects, ME Projects, MTech Projects, Wireless Networks Projects, Network Security Projects, Networking Projects, final year projects, ieee projects, student projects, college projects, ieee projects in chennai, java projects, software ieee projects, embedded ieee projects, "ieee2009projects", "final year projects", "ieee projects", "Engineering Projects", "Final Year Projects in Chennai", "Final year Projects at Chennai", Java Projects, ASP.NET Projects, VB.NET Projects, C# Projects, Visual C++ Projects, Matlab Projects, NS2 Projects, C Projects, Microcontroller Projects, ATMEL Projects, PIC Projects, ARM Projects, DSP Projects, VLSI Projects, FPGA Projects, CPLD Projects, Power Electronics Projects, Electrical Projects, Robotics Projects, Solor Projects, MEMS Projects, J2EE Projects, J2ME Projects, AJAX Projects, Structs Projects, EJB Projects, Real Time Projects, Live Projects, Student Projects, Engineering Projects, MCA Projects, MBA Projects, College Projects, BE Projects, BTech Projects, ME Projects, MTech Projects, M.Sc Projects, Final Year Java Projects, Final Year ASP.NET Projects, Final Year VB.NET Projects, Final Year C# Projects, Final Year Visual C++ Projects, Final Year Matlab Projects, Final Year NS2 Projects, Final Year C Projects, Final Year Microcontroller Projects, Final Year ATMEL Projects, Final Year PIC Projects, Final Year ARM Projects, Final Year DSP Projects, Final Year VLSI Projects, Final Year FPGA Projects, Final Year CPLD Projects, Final Year Power Electronics Projects, Final Year Electrical Projects, Final Year Robotics Projects, Final Year Solor Projects, Final Year MEMS Projects, Final Year J2EE Projects, Final Year J2ME Projects, Final Year AJAX Projects, Final Year Structs Projects, Final Year EJB Projects, Final Year Real Time Projects, Final Year Live Projects, Final Year Student Projects, Final Year Engineering Projects, Final Year MCA Projects, Final Year MBA Projects, Final Year College Projects, Final Year BE Projects, Final Year BTech Projects, Final Year ME Projects, Final Year MTech Projects, Final Year M.Sc Projects, IEEE Java Projects, ASP.NET Projects, VB.NET Projects, C# Projects, Visual C++ Projects, Matlab Projects, NS2 Projects, C Projects, Microcontroller Projects, ATMEL Projects, PIC Projects, ARM Projects, DSP Projects, VLSI Projects, FPGA Projects, CPLD Projects, Power Electronics Projects, Electrical Projects, Robotics Projects, Solor Projects, MEMS Projects, J2EE Projects, J2ME Projects, AJAX Projects, Structs Projects, EJB Projects, Real Time Projects, Live Projects, Student Projects, Engineering Projects, MCA Projects, MBA Projects, College Projects, BE Projects, BTech Projects, ME Projects, MTech Projects, M.Sc Projects, IEEE 2009 Java Projects, IEEE 2009 ASP.NET Projects, IEEE 2009 VB.NET Projects, IEEE 2009 C# Projects, IEEE 2009 Visual C++ Projects, IEEE 2009 Matlab Projects, IEEE 2009 NS2 Projects, IEEE 2009 C Projects, IEEE 2009 Microcontroller Projects, IEEE 2009 ATMEL Projects, IEEE 2009 PIC Projects, IEEE 2009 ARM Projects, IEEE 2009 DSP Projects, IEEE 2009 VLSI Projects, IEEE 2009 FPGA Projects, IEEE 2009 CPLD Projects, IEEE 2009 Power Electronics Projects, IEEE 2009 Electrical Projects, IEEE 2009 Robotics Projects, IEEE 2009 Solor Projects, IEEE 2009 MEMS Projects, IEEE 2009 J2EE P
Attribute based encryption with verifiable outsourced decryptionIEEEFINALYEARPROJECTS
To Get any Project for CSE, IT ECE, EEE Contact Me @ 09849539085, 09966235788 or mail us - ieeefinalsemprojects@gmail.co¬m-Visit Our Website: www.finalyearprojects.org
Attribute-based encryption (ABE) is a public-key based one-to-many encryption that allows users to encrypt and decrypt data based on user attributes.
A promising application of ABE is flexible access control of encrypted data stored in the cloud, using access polices and ascribed attributes associated with private keys and ciphertexts.One of the main efficiency drawbacks of the existing ABE schemes is that decryption involves expensive pairing operations and the number of such operations grows with the complexity of the access policy. Recently, Green et al. proposed an ABE system with outsourced decryption that largely eliminates the decryption overhead for users.
In such a system, a user provides an untrusted server, say a cloud service provider, with a transformation key that allows the cloud to translate any ABE cipher text satisfied by that user’s attributes or access policy into a simple cipher text, and it only incurs a small computational overhead for the user to recover the plaintext from the transformed cipher text.
Security of an ABE system with outsourced decryption ensures that an adversary (including a malicious cloud) will not be able to learn anything about the encrypted message; however, it does not guarantee the correctness of the transformation done by the cloud.
In this paper, we consider a new requirement of ABE with outsourced decryption: verifiability. Informally, verifiability guarantees that a user can efficiently check if the transformation is done correctly.
We give the formal model of ABE with verifiable outsourced decryption and propose a concrete scheme. We prove that our new scheme is both secure and verifiable, without relying on random oracles.
Finally, we show an implementation of our scheme and result of performance measurements, which indicates a significant reduction on computing resources imposed on users.
http://kaashivinfotech.com/
http://inplanttrainingchennai.com/
http://inplanttraining-in-chennai.com/
http://internshipinchennai.in/
http://inplant-training.org/
http://kernelmind.com/
http://inplanttraining-in-chennai.com/
http://inplanttrainingchennai.com/
This document summarizes research on improving the security and performance of distributed data aggregation systems. It discusses how existing systems like DDAS that rely on Blobseer for data storage lack sufficient security. The document proposes using Kerberos authentication to securely authenticate authorized clients and allow access to distributed databases. It also describes using adaptive Huffman coding for compressing aggregated data to reduce computation costs and speed up retrieval. The research aims to integrate these methods into DDAS to provide secure and fast retrieval of aggregated data stored in distributed systems.
secure data transfer and deletion from counting bloom filter in cloud computing.Venkat Projects
The document discusses a proposed system for secure data transfer and deletion from one cloud to another. It aims to achieve verifiable data transfer and reliable data deletion without a trusted third party. The system uses a counting Bloom filter scheme to allow a data owner, original cloud, and target cloud to verify that data was completely and accurately transferred or deleted. The scheme ensures data confidentiality, integrity, and public verifiability during the transfer and deletion processes.
Survey on An effective database tampering system with veriable computation a...IRJET Journal
This document summarizes a research paper that proposes an effective database tampering detection system using verifiable computation and incremental updates. It discusses how existing tamper detection approaches like tiled bitmaps can detect tampering but may produce false positives in the candidate tamperer set. The paper aims to improve on this by developing an algorithm that can find the exact tampered data, time, and person responsible. It reviews related work on techniques like bilinear pairing, verifiable databases, and vector commitments, identifying limitations like efficiency and inability to support public verifiability. The proposed approach seeks to address database tampering in a more accurate and efficient manner.
IRJET - Confidential Image De-Duplication in Cloud StorageIRJET Journal
This document proposes a confidential image de-duplication system for cloud storage. It introduces a hybrid cloud architecture using both public and private clouds. To provide greater security, the private cloud employs tiered authentication. The system performs de-duplication by comparing hash values of files generated using MD5 and SHA algorithms, to detect duplicate files and reduce storage usage. It encrypts files using AES before storage in the cloud. The private cloud server manages encryption keys and performs de-duplication checks by comparing file hashes and contents. This allows detection of duplicate files while preserving data privacy through encryption.
Towards secure and dependable storage service in cloudsibidlegend
The document proposes a distributed storage integrity auditing mechanism for cloud data storage that allows for lightweight communication and computation during audits. The proposed design ensures strong correctness guarantees for stored data and enables fast error localization to identify misbehaving servers. It also supports secure and efficient dynamic operations like modifying, deleting, and appending blocks of outsourced data. Analysis shows the scheme is efficient and resilient against various attacks.
Enhancing Data Security in Cloud Storage Auditing With Key Abstractionpaperpublications3
Abstract: Auditing is an important service to verify the data in the cloud. Most of the auditing protocols are based on the assumption that the client’s secret key for auditing is secure. The security is not fully achieved, because of the low security parameters of the client. If the auditing protocol is not secured means the data of the client will exposed inevitably. In this paper a new mechanism of cloud auditing is implemented. And investigate to reduce the damage of the client key exposure in cloud storage auditing. Here the designing is built upon to overcome the week key auditing process. The auditing protocol is designed with the help of key exposure resilience. In the proposed design, the binary tree structure and the pre-order traversal technique is used to update the secret keys of the client. The security proof and the performance shows the cloud storage auditing with key exposure resilience is very efficient.
Data Access Control Schemes in Cloud Computing: A ReviewIRJET Journal
This document reviews various data access control schemes for cloud computing. It discusses role-based access control (RBAC) and role-based encryption (RBE) which allows data owners to encrypt data such that only users with appropriate roles can decrypt it. Attribute-based encryption (ABE) is also covered, which allows fine-grained access control of encrypted data based on user attributes. The document also reviews user-based access control (UBAC) which applies access control lists to data to control access. It evaluates these schemes and their ability to efficiently handle user revocation while protecting data access and privacy in the cloud.
Authentication on Cloud using Attribute Based EncryptionAnkit Raj
Improving Cloud Security for Authentication using Attribute Based Encryption.
Attribute-based encryption is a type of public key encryption in which the secret key of a user and the cipher text are dependent upon attributes. The decryption of a cipher text is possible only if the set of attributes of the user key matches the attributes of the cipher text. A crucial security aspect of Attribute-Based Encryption is collusion-resistance: An adversary that holds multiple keys should only be able to access data if at least one individual key grants access. Cloud computing is a type of Internet-based computing that provides shared computer processing resources and data to computers and other devices on demand. Cloud computing and storage solutions provide users and enterprises with various capabilities to store and process their data in third-party data centers that may be located far from the user–ranging in distance from across a city to across the world. There were several cases of security breach on the cloud in the past few year and data security was compromised like Adobe’s Security Breach, Amazon website failure and many security attacks like this motivated us to work on strict security measures on cloud. In such a system, a user provides an untrusted server, say a cloud service provider, with a transformation key that allows the cloud to translate any ABE cipher text satisfied by that user’s attributes into a simple cipher text, and it only incurs a small computational overhead for the user to recover the plaintext from the transformed cipher text. Security of an ABE system with outsourced decryption ensures that an adversary including a malicious cloud will not be able to learn anything about the encrypted message. The formal model of ABE with outsourced decryption forms a concrete scheme. Data owner decides the access using combinations of or policies and encrypt the file and corresponding authentic user can decrypt it using their policies.
This document discusses various Enterprise Application Integration centric designs or approaches which may be considered as better practices, and have been implemented in the data acquisition platform at Nielsen. Targeted audience is tech leaders and architects working across the platform. There is a special focus on leveraging open source technologies where possible. Hoping that some of the material here can help fellow architects.
JPD1418 TrustedDB: A Trusted Hardware-Based Database with Privacy and Data C...chennaijp
We have best 2014 free dot not projects topics are available along with all document, you can easy to find out number of documents for various projects titles.
For More Details:
http://jpinfotech.org/final-year-ieee-projects/2014-ieee-projects/dot-net-projects/
This document lists 90 projects available from Logicsystems in 2014 across various technologies and domains. It provides the contact information for Arunkumar to discuss the projects further. The projects cover topics such as cloud computing, data mining, secure computing, networking, parallel and distributed systems, mobile computing, and service computing. Programming languages included are Java and .NET.
Improved Data Integrity Protection Regenerating-Coding Based Cloud StorageIJSRD
In today’s world a huge amount of data is loaded on the cloud storage. The protection of such type of data is main concern. It is somewhat difficult to protect such data against corruption, checking the integrity of data and also representation of failure data. Together with this it is also critical to implement fault tolerance among such type of data against corruptions. The private auditing for regenerating codes which is nothing but the existing system, developed to address such types of problems. The private auditing for regenerating codes can generate codes for such corrupted and incomplete data, but for this, data owners always have to stay online for checking completeness as well as integrity of data. In this paper, we are introducing the public auditing technique for regenerating code, based on cloud storage. The proxy is the main component in public auditing to regenerate failed authenticators in the absence of owner of the data. A public verifiable authenticator is also designed, which is generated by a several keys and can be regenerate using partial keys. We are also using pseudorandom function to preserve data privacy by randomizing the encode coefficient. Thus our technique can successfully regenerate the failed authenticators without data owner. Experiment implementation also indicates that our scheme is highly efficient and can be used to regenerate code in cloud based storage.
PRShare: a framework for privacy-preserving, interorganizational data sharing.Lihi Idan
This document proposes a framework called PRShare for privacy-preserving interorganizational data sharing. PRShare allows different organizations to share data while using their own vocabularies/attributes and preserving privacy. It introduces the concept of attribute-based encryption with oblivious attribute translation, where a semi-trusted mediator can translate attributes between vocabularies without revealing sensitive attribute values. This translation supports dynamically updating attributes based on auxiliary information and delegation without exposing data to unauthorized parties.
Attribute based encryption in cloud with significant reduction reviw2Naveena N
This document describes a student project that proposes a new ciphertext-policy attribute-based encryption model with a hierarchical structure to improve scalability and flexibility in cloud storage. The model aims to eliminate relying on data storage servers for unauthorized data access prevention and integrity checks, while significantly reducing computation time for decryption. The proposed system and modules are evaluated, showing the scheme efficiently and securely manages outsourced data and reduces computation time.
Trusted db a trusted hardware based database with privacy and data confidenti...LeMeniz Infotech
Trusted db a trusted hardware based database with privacy and data confidentiality
Traditionally, as soon as confidentiality becomes a concern, data are encrypted before outsourcing to a service provider. Any software-based cryptographic constructs then deployed, for server-side query processing on the encrypted data, inherently limit query expressiveness
Periodic Auditing of Data in Cloud Using Random BitsIJTET Journal
This document summarizes a research paper that proposes a scheme for periodically auditing data integrity in cloud storage using random bits. It introduces a proof of retrievability (POR) scheme to ensure data integrity based on service level agreements. The scheme uses probabilistic queries and periodic verification to improve the performance of audit services. It presents an architecture involving a client that pre-processes data before storing it, and a verification protocol to check integrity without retrieving the full data. The scheme aims to reduce overhead on clients and servers while minimizing proof sizes.
PUBLIC AUDITING FOR SECURE CLOUD STORAGE ...Bharath Nair
This document outlines a presentation on public auditing for secure cloud storage. It discusses the objective of developing a system to allow cloud users to ensure their data is secure and not corrupted. It covers topics like introduction to cloud computing, literature review on existing methods, problem description, the proposed method, applications, discussion of base paper, execution tools, and conclusions. The proposed method aims to enable public auditing of cloud storage without requiring local data copies, providing privacy and efficiency.
Blockchain Scalability - Themes, Tools and TechniquesGokul Alex
This presentation is a deep dive on Blockchain Scalability Challenges, Constraints with a narrative on promising techniques such as State Channel, Side Chains, Simple Payment Vehicles, Consensus Algorithms and Directed Acyclic Graphs. The presentation starts with analysing the scalability cube.
This document describes a Zigbee-based weather monitoring system that uses wireless sensors to remotely monitor various weather parameters without human intervention. The system collects data from sensors that measure temperature, humidity, wind speed and direction, rainfall, and other factors. An ARM7 microcontroller is used to multiplex sensor data and transmit it wirelessly via Zigbee modules. The received data is sent to a computer system. The system provides accurate, real-time monitoring over a large area at low cost compared to traditional weather monitoring methods. It was found to reliably transmit weather data from multiple remote locations.
Design and Implementation of monitoring LAN user wirelessly by Android mobile...theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Effects of Variable Viscosity and Thermal Conductivity on MHD free Convection...theijes
This document summarizes a study that numerically investigates the effects of variable viscosity and thermal conductivity on magnetohydrodynamic (MHD) free convection and mass transfer flow over an inclined vertical surface in a porous medium with heat generation. The governing equations are reduced to ordinary differential equations using similarity transformations and then solved numerically using a shooting method. The results show that increasing the viscosity variation parameter, thermal conductivity parameter, magnetic parameter, permeability parameter, or Schmidt number decreases the fluid velocity, while increasing the heat generation parameter, local Grashof number, or mass Grashof number increases the fluid velocity. Skin friction, Nusselt number, and Sherwood number are also computed and presented in tabular form.
secure data transfer and deletion from counting bloom filter in cloud computing.Venkat Projects
The document discusses a proposed system for secure data transfer and deletion from one cloud to another. It aims to achieve verifiable data transfer and reliable data deletion without a trusted third party. The system uses a counting Bloom filter scheme to allow a data owner, original cloud, and target cloud to verify that data was completely and accurately transferred or deleted. The scheme ensures data confidentiality, integrity, and public verifiability during the transfer and deletion processes.
Survey on An effective database tampering system with veriable computation a...IRJET Journal
This document summarizes a research paper that proposes an effective database tampering detection system using verifiable computation and incremental updates. It discusses how existing tamper detection approaches like tiled bitmaps can detect tampering but may produce false positives in the candidate tamperer set. The paper aims to improve on this by developing an algorithm that can find the exact tampered data, time, and person responsible. It reviews related work on techniques like bilinear pairing, verifiable databases, and vector commitments, identifying limitations like efficiency and inability to support public verifiability. The proposed approach seeks to address database tampering in a more accurate and efficient manner.
IRJET - Confidential Image De-Duplication in Cloud StorageIRJET Journal
This document proposes a confidential image de-duplication system for cloud storage. It introduces a hybrid cloud architecture using both public and private clouds. To provide greater security, the private cloud employs tiered authentication. The system performs de-duplication by comparing hash values of files generated using MD5 and SHA algorithms, to detect duplicate files and reduce storage usage. It encrypts files using AES before storage in the cloud. The private cloud server manages encryption keys and performs de-duplication checks by comparing file hashes and contents. This allows detection of duplicate files while preserving data privacy through encryption.
Towards secure and dependable storage service in cloudsibidlegend
The document proposes a distributed storage integrity auditing mechanism for cloud data storage that allows for lightweight communication and computation during audits. The proposed design ensures strong correctness guarantees for stored data and enables fast error localization to identify misbehaving servers. It also supports secure and efficient dynamic operations like modifying, deleting, and appending blocks of outsourced data. Analysis shows the scheme is efficient and resilient against various attacks.
Enhancing Data Security in Cloud Storage Auditing With Key Abstractionpaperpublications3
Abstract: Auditing is an important service to verify the data in the cloud. Most of the auditing protocols are based on the assumption that the client’s secret key for auditing is secure. The security is not fully achieved, because of the low security parameters of the client. If the auditing protocol is not secured means the data of the client will exposed inevitably. In this paper a new mechanism of cloud auditing is implemented. And investigate to reduce the damage of the client key exposure in cloud storage auditing. Here the designing is built upon to overcome the week key auditing process. The auditing protocol is designed with the help of key exposure resilience. In the proposed design, the binary tree structure and the pre-order traversal technique is used to update the secret keys of the client. The security proof and the performance shows the cloud storage auditing with key exposure resilience is very efficient.
Data Access Control Schemes in Cloud Computing: A ReviewIRJET Journal
This document reviews various data access control schemes for cloud computing. It discusses role-based access control (RBAC) and role-based encryption (RBE) which allows data owners to encrypt data such that only users with appropriate roles can decrypt it. Attribute-based encryption (ABE) is also covered, which allows fine-grained access control of encrypted data based on user attributes. The document also reviews user-based access control (UBAC) which applies access control lists to data to control access. It evaluates these schemes and their ability to efficiently handle user revocation while protecting data access and privacy in the cloud.
Authentication on Cloud using Attribute Based EncryptionAnkit Raj
Improving Cloud Security for Authentication using Attribute Based Encryption.
Attribute-based encryption is a type of public key encryption in which the secret key of a user and the cipher text are dependent upon attributes. The decryption of a cipher text is possible only if the set of attributes of the user key matches the attributes of the cipher text. A crucial security aspect of Attribute-Based Encryption is collusion-resistance: An adversary that holds multiple keys should only be able to access data if at least one individual key grants access. Cloud computing is a type of Internet-based computing that provides shared computer processing resources and data to computers and other devices on demand. Cloud computing and storage solutions provide users and enterprises with various capabilities to store and process their data in third-party data centers that may be located far from the user–ranging in distance from across a city to across the world. There were several cases of security breach on the cloud in the past few year and data security was compromised like Adobe’s Security Breach, Amazon website failure and many security attacks like this motivated us to work on strict security measures on cloud. In such a system, a user provides an untrusted server, say a cloud service provider, with a transformation key that allows the cloud to translate any ABE cipher text satisfied by that user’s attributes into a simple cipher text, and it only incurs a small computational overhead for the user to recover the plaintext from the transformed cipher text. Security of an ABE system with outsourced decryption ensures that an adversary including a malicious cloud will not be able to learn anything about the encrypted message. The formal model of ABE with outsourced decryption forms a concrete scheme. Data owner decides the access using combinations of or policies and encrypt the file and corresponding authentic user can decrypt it using their policies.
This document discusses various Enterprise Application Integration centric designs or approaches which may be considered as better practices, and have been implemented in the data acquisition platform at Nielsen. Targeted audience is tech leaders and architects working across the platform. There is a special focus on leveraging open source technologies where possible. Hoping that some of the material here can help fellow architects.
JPD1418 TrustedDB: A Trusted Hardware-Based Database with Privacy and Data C...chennaijp
We have best 2014 free dot not projects topics are available along with all document, you can easy to find out number of documents for various projects titles.
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This document lists 90 projects available from Logicsystems in 2014 across various technologies and domains. It provides the contact information for Arunkumar to discuss the projects further. The projects cover topics such as cloud computing, data mining, secure computing, networking, parallel and distributed systems, mobile computing, and service computing. Programming languages included are Java and .NET.
Improved Data Integrity Protection Regenerating-Coding Based Cloud StorageIJSRD
In today’s world a huge amount of data is loaded on the cloud storage. The protection of such type of data is main concern. It is somewhat difficult to protect such data against corruption, checking the integrity of data and also representation of failure data. Together with this it is also critical to implement fault tolerance among such type of data against corruptions. The private auditing for regenerating codes which is nothing but the existing system, developed to address such types of problems. The private auditing for regenerating codes can generate codes for such corrupted and incomplete data, but for this, data owners always have to stay online for checking completeness as well as integrity of data. In this paper, we are introducing the public auditing technique for regenerating code, based on cloud storage. The proxy is the main component in public auditing to regenerate failed authenticators in the absence of owner of the data. A public verifiable authenticator is also designed, which is generated by a several keys and can be regenerate using partial keys. We are also using pseudorandom function to preserve data privacy by randomizing the encode coefficient. Thus our technique can successfully regenerate the failed authenticators without data owner. Experiment implementation also indicates that our scheme is highly efficient and can be used to regenerate code in cloud based storage.
PRShare: a framework for privacy-preserving, interorganizational data sharing.Lihi Idan
This document proposes a framework called PRShare for privacy-preserving interorganizational data sharing. PRShare allows different organizations to share data while using their own vocabularies/attributes and preserving privacy. It introduces the concept of attribute-based encryption with oblivious attribute translation, where a semi-trusted mediator can translate attributes between vocabularies without revealing sensitive attribute values. This translation supports dynamically updating attributes based on auxiliary information and delegation without exposing data to unauthorized parties.
Attribute based encryption in cloud with significant reduction reviw2Naveena N
This document describes a student project that proposes a new ciphertext-policy attribute-based encryption model with a hierarchical structure to improve scalability and flexibility in cloud storage. The model aims to eliminate relying on data storage servers for unauthorized data access prevention and integrity checks, while significantly reducing computation time for decryption. The proposed system and modules are evaluated, showing the scheme efficiently and securely manages outsourced data and reduces computation time.
Trusted db a trusted hardware based database with privacy and data confidenti...LeMeniz Infotech
Trusted db a trusted hardware based database with privacy and data confidentiality
Traditionally, as soon as confidentiality becomes a concern, data are encrypted before outsourcing to a service provider. Any software-based cryptographic constructs then deployed, for server-side query processing on the encrypted data, inherently limit query expressiveness
Periodic Auditing of Data in Cloud Using Random BitsIJTET Journal
This document summarizes a research paper that proposes a scheme for periodically auditing data integrity in cloud storage using random bits. It introduces a proof of retrievability (POR) scheme to ensure data integrity based on service level agreements. The scheme uses probabilistic queries and periodic verification to improve the performance of audit services. It presents an architecture involving a client that pre-processes data before storing it, and a verification protocol to check integrity without retrieving the full data. The scheme aims to reduce overhead on clients and servers while minimizing proof sizes.
PUBLIC AUDITING FOR SECURE CLOUD STORAGE ...Bharath Nair
This document outlines a presentation on public auditing for secure cloud storage. It discusses the objective of developing a system to allow cloud users to ensure their data is secure and not corrupted. It covers topics like introduction to cloud computing, literature review on existing methods, problem description, the proposed method, applications, discussion of base paper, execution tools, and conclusions. The proposed method aims to enable public auditing of cloud storage without requiring local data copies, providing privacy and efficiency.
Blockchain Scalability - Themes, Tools and TechniquesGokul Alex
This presentation is a deep dive on Blockchain Scalability Challenges, Constraints with a narrative on promising techniques such as State Channel, Side Chains, Simple Payment Vehicles, Consensus Algorithms and Directed Acyclic Graphs. The presentation starts with analysing the scalability cube.
This document describes a Zigbee-based weather monitoring system that uses wireless sensors to remotely monitor various weather parameters without human intervention. The system collects data from sensors that measure temperature, humidity, wind speed and direction, rainfall, and other factors. An ARM7 microcontroller is used to multiplex sensor data and transmit it wirelessly via Zigbee modules. The received data is sent to a computer system. The system provides accurate, real-time monitoring over a large area at low cost compared to traditional weather monitoring methods. It was found to reliably transmit weather data from multiple remote locations.
Design and Implementation of monitoring LAN user wirelessly by Android mobile...theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Effects of Variable Viscosity and Thermal Conductivity on MHD free Convection...theijes
This document summarizes a study that numerically investigates the effects of variable viscosity and thermal conductivity on magnetohydrodynamic (MHD) free convection and mass transfer flow over an inclined vertical surface in a porous medium with heat generation. The governing equations are reduced to ordinary differential equations using similarity transformations and then solved numerically using a shooting method. The results show that increasing the viscosity variation parameter, thermal conductivity parameter, magnetic parameter, permeability parameter, or Schmidt number decreases the fluid velocity, while increasing the heat generation parameter, local Grashof number, or mass Grashof number increases the fluid velocity. Skin friction, Nusselt number, and Sherwood number are also computed and presented in tabular form.
Inclusive On-line Learning Environments. New Approaches and Possible Applicab...theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Optimum Operation of Direct Coupled Photovoltaic-Water Pumping Systemstheijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Application of Coconut Coir and Fly ash in Sub grade strengtheningtheijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Theoretical work submitted to the Journal should be original in its motivation or modeling structure. Empirical analysis should be based on a theoretical framework and should be capable of replication. It is expected that all materials required for replication (including computer programs and data sets) should be available upon request to the authors.
The International Journal of Engineering & Science would take much care in making your article published without much delay with your kind cooperation
Recent Developments in Organic Polymers Based- Photovoltaic Cellstheijes
In this review article, the uses of organic polymers to make photovoltaic cells have been discussed. The focus is mainly on discussing organic polymer based photovoltaic (OPVs) solar cells, the development of new device technologies and donor polymers that are being researched on. The recent development in this field has led to improved OPV performances with power conversion efficiencies as phenomenal as 9%. However for commercial application of this kind of OPVs, an improved device structure and cost effective processing methods are required. This article reports the polymer design criteria, energy level matching, nano-morphing of polymer/acceptor blend films and local dipole moments of the polymer chains that have been developed in the research that took place over the past 4 years. We emphasize the importance of developing new methods for designing polymers with improved physical properties and development of new technologies to fully understand the fundamentals of OPV mechanisms, which will help improve the power conversion efficiency of the OPV.
Impact on Aquatic Environment for Water Pollution in the Vahirab Rivertheijes
Water is a valued natural resource for the existence of all living organisms. Vahirab river is the prominent & important rivers for vital source of water from Jessore to Khulna. The prime reason of deterioration and pollution of the river water quality by effluents discharged from industries, municipal sewage, household wastes, clinical wastes and oils. The purpose of this study is to investigate the impact of this wastewater on the river and thus to provide an updated report on the state of water quality of river Vahirab. The water sample were collected from different areas in the river Vahirab and analyzed for physico-chemical parameters and fresh water elements in the month of July, 2013 to November, 2013. The values of temperature, turbidity, pH, chloride, hardness, DO, BOD, COD, Fe, As, Pb, Cd and Cr in the river water were measured. During study period the temperature, turbidity, pH, hardness, chloride, DO, BOD and COD were found to be 280C to 31.50C, 37 to 947 NTU, 7.2 to 8.01, 92 to 140 ppm, 9 to 34 ppm, 122 to 5.51 mg/L, 0.22 to 5.79 mg/L and 3.80 to 10.80 mg/L respectively. The concentration of Fe, Pb, As, Cd and Cr were found to be 0.10 to 2.60 ppm, 0.004 to 0.025 ppm, 0.001 to 0.004 ppm, 0.00015 to 0.0094 ppm and 0.001 to 0.006 ppm respectively. From the results of investigation, it was observed that the values of pH, Cl- , hardness, As, Pb, Cd and Cr were within standard limit but the values of temperature, turbidity, DO, BOD, COD and Fe were not within acceptable limit as recommended by WHO and BDS guidelines. The results obtained from this investigation will help the people of the research area to be conscious for using the water in the Vahirab river.
An Efficient Elliptic Curve Cryptography Arithmetic Using Nikhilam Multiplica...theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
In-vitro Interaction of αB-Crystallin on Serum Amyloid A and Serum Amyloid A ...theijes
The interactions of SAA and SAA protofibrils with protecting role of alphaB-Crystallin with hepta 1-6 cells of the mouse are dealt with in detail to study the binding of SAA protofibrils in various conditions. Specifically, interaction of serum amyloid A fibrils with a cell surface binding site/receptor might alter the local environment to cause cellular dysfunction and to be more favorable for amyloid formation and prevention with alphaB-Crystallin. This is important in relation to the activity of membrane proteins, because losing the activity of such systems will ultimately lead to malfunction or death of the cell. The interactions of Serum Amyloid A (SAA) and Serum Amyloid A protofibrils with hepta 1-6 cells of the mouse are dealt with in detail to study the binding of SAA protofibrils in various onditions. The induced fluorescence, induced circular dichroism, FACScan and MTT assay results have shown the SAA and SAA prototfibrils binding and cell toxicity with the hepta 1-6 cells with different concentrations of alphaB-Crystallin 0.15-15 nM. Specifically, cells were incubated with 1.25-6.25 M SAA-FITC and SAA protofibrils-FITC assayed. The 50% viable hepta 1-6 cells at 4–6 M with an LD50 of 3.5 M. The interaction of serum amyloid A fibrils with a cell surface binding site/receptor might alter the local environment to cause cellular dysfunction and to be more favorable for amyloid formation. In the present study, concluding that the SAA fibrils and SAA protein binding and cell cytotoxicity was reduced in the presence of alphaB-Crystallin.
Discovery of Perched Aquifer When Assessing Aquifer Potential along the flood...theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The Correlation of Parcel shape and Dimensions with Regulation in Creating Co...theijes
Commercial corridor in areas surround Jakarta has been rapidly growth. Some of this commercial corridor grows without any proper planning. Commercial corridor is created from available infrastructure that was used to connect some developed area. The rapid growth of commercial corridor shows irregularity and heterogeneity. The difference shape and dimension of parcel get similar treatment of building code. The characteristic of this commercial corridor created from the relationship of parcel shape and dimensions with building code as the controller. Relationship of parcel shape and dimensions with regulation can be analyzed easier using parametric simulation tools. The result of parametric simulation tools shows the characteristic of corridor as correlation between all variable. This paper uses one representative segment of corridor commercial in Serpong Tangerang.
First mitotic division: criterion for selection of potential IVF embryo – A S...theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Evaluation of Heterogeneous Aquifers in Crystalline Rocks from Resistivity So...theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Natural Image Based Visual Secret Sharing Schemetheijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Study on the Effect of Ggbs & M Sand in Self Compacting oncretetheijes
Conventional concrete is the most widely used construction material throughout the world because of its versality, mouldability, durability, and resistance to fire and energy efficiency. However, its major disadvantages like poor tensile strength, limited ductility and little resistance to cracking resists its use as a structural material. Hence, in order to overcome these difficulties several new materials have been developed in the recent past.Admixtures are ingredients other than water, aggregates, hydraulic cement and fibers that are added to the concrete batch immediately before or during mixing. Mineral admixtures are usually added to concrete in larger amounts to enhance the workability of fresh concrete, to improve resistance of concrete to thermal cracking, alkali-aggregate expansion and sulphate attack and to enable a reduction in cement content. The objective of this study is to evaluate the effectiveness of various mineral admixtures in producing SCC. In this study the scope of GGBS ( Ground granular blast furnace slag ) as a mineral admixture to some percentage replace cement in SCC were studied. The study showed that a maximum of 50% GGBS were able to be used as a mineral admixture without affecting the self-compactability
Temperature Dependence of Density and Dynamic Surface Tension of Groundnut Oi...theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Study, testing & analysis of composit material based on munja fibretheijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
Protecting Global Records Sharing with Identity Based Access Control ListEditor IJCATR
This document summarizes a research paper on TrustedDB, an outsourced database prototype that allows clients to execute SQL queries on encrypted data with privacy and regulatory compliance. It does this by leveraging tamper-proof cryptographic coprocessors located on the server, removing limitations on query types. The system focuses on providing a secure data sharing service while allowing dynamic access. Performance and costs are evaluated by implementing and running TrustedDB on hardware security modules.
Protecting Global Records Sharing with Identity Based Access Control ListEditor IJCATR
Generally, the information is stored in the database. Protecting sensitive information are encrypted before outsourcing to a
service provider. We send the request to service provider through SQL queries. The query expressiveness is limited by means of any
software-based cryptographical constructs then deployed, for server-side query working on the encrypted data.Data sharing in the
service provider is emerging as a promising technique for allowing users to access data. The growing number of customers who stores
their data in service provider is increasingly challenging users’ privacy and the security of data. The TrustedDB an outsourced
database prototype that allows clients to execute SQL queries with privacy and under regulatory compliance constraints by leveraging
server-hosted. Tamper-proof believed hardware in crucial query processing levels, thereby removing any limits on the type of
supported queries. It focuses on providing a dependable and secure data sharing service that allows users dynamic access to their
information. TrustedDB is constructed and runs on hardware, and its performance and costs are evaluated here.
IEEE 2014 DOTNET DATA MINING PROJECTS Trusted db a-trusted-hardware-based-dat...IEEEMEMTECHSTUDENTPROJECTS
The document describes TrustedDB, a database system that uses trusted hardware to enable private queries on outsourced data. TrustedDB allows clients to execute SQL queries while preserving privacy and regulatory compliance by leveraging tamper-proof trusted hardware for sensitive query processing stages. This removes limitations of software-only encryption approaches. The system partitions queries into public and private components, executing the latter on secure hardware for better performance and lower costs than solely cryptographic approaches. Evaluation shows TrustedDB can support full-fledged databases on trusted hardware more cost-effectively than existing techniques.
To Get any Project for CSE, IT ECE, EEE Contact Me @ 09666155510, 09849539085 or mail us - ieeefinalsemprojects@gmail.com-Visit Our Website: www.finalyearprojects.org
Data Security in Cloud Computing Using Linear ProgrammingIOSR Journals
This document discusses a method for securely outsourcing linear programming (LP) computations to the cloud. It proposes to decompose LP computation into public LP solvers running on the cloud and private LP parameters owned by the customer. It develops efficient privacy-preserving problem transformation techniques that allow customers to transform their original LP problem into an arbitrary problem while protecting sensitive input and output. It also explores the duality theorem of LP to derive conditions for validating the computation result with close-to-zero cost. The method aims to achieve practical efficiency for secure outsourcing of LP problems to the cloud.
IRJET- A Novel and Secure Approach to Control and Access Data in Cloud St...IRJET Journal
This document proposes a novel approach to securely control and access data stored in the cloud using Ciphertext-Policy Attribute-Based Encryption (CP-ABE). The approach aims to address abuse of access credentials by tracing malicious insiders and revoking their access. It presents two new CP-ABE frameworks that allow traceability of malicious cloud clients, identification of misbehaving authorities, and auditing without requiring extensive storage. The frameworks provide fine-grained access control and can revoke credentials of traced attackers.
SECURE FILE STORAGE IN THE CLOUD WITH HYBRID ENCRYPTIONIRJET Journal
The document proposes a new public audit program for secure cloud storage using a dynamic hash table (DHT) data structure. A DHT would store data integrity information in the Third Party Auditor (TPA) to reduce computational costs and communication overhead compared to previous schemes. The approach combines public-key-based homomorphic authenticators with a TPA-generated random mask to achieve data protection and batch verification. This allows the cloud storage system to meet security requirements for data confidentiality, integrity, and availability while improving audit efficiency.
Third Party Public Auditing Scheme for Security in Cloud Storageijtsrd
"By means of cloud storage, users can distantly store their data and enjoy the on demand high quality applications and services from a shared group of configurable computing resources, without the burden of local data storage and maintenance. However, the information that users no longer have physical ownership of the outsourced data makes the data integrity protection in cloud computing a difficult task, particularly for users with constrained computing resources. Moreover, users should be able to just use the cloud storage space as if it is local, without worrying about the need to verify its integrity. Thus, to enable public auditability for cloud storage is of serious importance so that users can rely on a third party auditor TPA to verify the integrity of outsourced data and be worry free. To securely introduce a well organized TPA, the auditing process should bring in no new vulnerabilities to user data privacy, and introduce no additional online burden to user. However we propose a secure cloud storage system supporting privacy preserving public auditing and monitoring. We additional would extend our result to enable the TPA to perform audits for multiple users simultaneously and efficiently, also integrity of data in cloud. Extensive security and performance analysis show the future schemes are provably secure and highly well organized. Our beginning tryouts would be conducted on Amazon EC2 instance additional demonstrating the fast performance of the design. Heeth Shah | Jill Shah | Ushma Desai ""Third Party Public Auditing Scheme for Security in Cloud Storage"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-3 , April 2019, URL: https://www.ijtsrd.com/papers/ijtsrd21687.pdf
Paper URL: https://www.ijtsrd.com/other-scientific-research-area/other/21687/third-party-public-auditing-scheme-for-security-in-cloud-storage/heeth-shah"
IRJET - Efficient and Verifiable Queries over Encrypted Data in CloudIRJET Journal
This document proposes a scheme for efficient and verifiable queries over encrypted data stored in the cloud. It aims to allow an authorized user to query encrypted documents of interest while maintaining privacy. The scheme provides a verification mechanism to allow users to check the correctness of query results and identify any valid results omitted by a potentially untrustworthy cloud server. The document reviews related work on searchable encryption and verifiable queries. It then outlines the proposed approach to build secure verifiable queries for encrypted cloud data.
Proxy-Oriented Data Uploading & Monitoring Remote Data Integrity in Public CloudIRJET Journal
This document proposes a system called proxy-oriented data uploading and remote data integrity checking using identity-based public key cryptography (ID-PUIC) to address security issues in public cloud storage. The system allows a user to designate a proxy to upload data to the cloud on their behalf and check the integrity of the remotely stored data without downloading it. The proposed ID-PUIC protocol uses cryptographic techniques like key generation, encryption, and decryption to securely upload data from proxies, detect malware, and verify data integrity in a private or public manner depending on the user's authorization. The system aims to improve security, efficiency and flexibility compared to existing public key infrastructure approaches for remote data integrity checking and proxy-based data uploading in public
This document provides an overview of client-server computing. It defines client-server computing as a distributed computing model where client applications request services from server processes that run on different interconnected computers. The document discusses key aspects of client-server systems including the roles of clients and servers, examples, design considerations like thin vs fat clients and stateful vs stateless servers, and how distributed object computing is an extension of the client-server model.
Building confidential and efficient query services in the cloud with rasp dat...eSAT Journals
Abstract With the advent of Cloud computing technology, the cost of computation, application hosting, content storage and delivery is reduced significantly. So now-a-days at an increased speed cloud computing infrastructures are used by the people. Security and Privacy is the biggest concern about cloud computing, since data management and infrastructure management in cloud is provided by third-party, it is always a risk to handover the sensitive information to such providers until and unless data confidentiality and secure query processing is guaranteed by the cloud service provider. To fully realize the benefits of cloud computing the workload must be reduced and efficient query processing must be provided. Therefore, to provide confidential and efficient query service RASP method is proposed, where RASP denotes Random Space Perturbation. Data Perturbation technique allows users to ascertain key summary information about the data that is not distorted and does not lead to a security breach. Exclusive security features are provided by the RASP. The RASP approach satisfies the data Confidentiality, query Privacy, Efficient query processing and Low working cost (CPEL) criteria for hosting queries in the cloud. KNN-R algorithm is used here to process the Range query to the kNN query. Users have been authorized by using the randomly generated product key value provided by the admin after successful registration by the user thus maintaining confidentiality. User queries are retrieved within a very short period of time i.e., less than a second. Outsourcing the management of the data related to organizations and individuals to a service provider are enabled by cloud computing services in order to save on the hardware costs and reducing maintenance cost. Also analyzed how the RASP method will provide confidentiality of data and will increase the working process of query. Key Words: query services in the cloud, low in-house processing, RASP perturbation, Range query, KNN query.
Privacy Preserving in Authentication Protocol for Shared Authority Based Clou...IRJET Journal
This document proposes a privacy-preserving authentication protocol for shared authority-based cloud computing. It discusses security and privacy issues with data sharing among users in cloud storage. The proposed protocol uses a shared authority-based privacy preservation authentication protocol (SecCloud) to address privacy and security concerns for cloud storage. It also uses SecCloud+ to remove data de-duplication. The protocol aims to provide scalability, integrity checking, secure de-duplication, and prevent shoulder surfing attacks during the authentication process in cloud computing.
Protection Saving Positioned Multi-Keyword Scan for Different Information in ...IRJET Journal
This document proposes a privacy-preserving ranked multi-keyword search system (PRMSM) for distributed cloud computing. It addresses challenges in allowing multiple data owners to securely share encrypted data and enable keyword searches without revealing sensitive information. The system uses a dynamic key generation protocol and new user authentication protocol to prevent attackers from accessing secret keys or impersonating valid users. It also supports efficient user revocation. PRMSM constructs a secure search protocol that allows the cloud server to perform searches without knowing keyword or trapdoor details, while preserving privacy of relevance scores between keywords and files. This enhances security and practicality for multi-owner cloud-based data sharing and search.
IRJET- An Approach for Implemented Secure Proxy Server for Multi-User Searcha...IRJET Journal
This document proposes a secure proxy server approach for multi-user searchable encryption without query transformation. The approach allows a proxy server to perform search operations on an encrypted database without decrypting user queries. It returns the top-k most relevant documents to user queries using Euclidean distance similarity. The proposed approach aims to improve search efficiency and accuracy compared to prior works, while maintaining security. It outlines the key concepts, notation, and structure of the proposed scheme.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
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IRJET- Deduplication of Encrypted Bigdata on CloudIRJET Journal
This document discusses deduplication of encrypted big data stored in the cloud. It proposes a scheme for secure and efficient deduplication of encrypted data in cloud storage based on ownership challenge and BLS signature based homomorphic linear authenticator. The scheme allows for reducing storage needs by eliminating duplicate encrypted data files, while preserving data privacy and enabling public auditing of data integrity. It evaluates the performance and security of the proposed scheme through analysis and simulations, finding it to be more efficient than existing solutions at supporting both deduplication and auditing of encrypted data in cloud storage, especially for big data.
IRJET- Secure Data Access on Distributed Database using Skyline QueriesIRJET Journal
This document proposes a methodology for secure data access on distributed databases using skyline queries. The methodology encrypts both the user's data and the database, so the distributed server has no knowledge of the stored data. It also includes "illusion data" uploaded by the user to prevent intruders from accessing the real data if a breach occurs. If an intruder accesses the stored data, they will only see the illusion data. The user and data owner will be notified of the intrusion. The methodology uses K-nearest neighbor and CNN algorithms to classify the results.
IRJET- An Efficient Data Replication in Salesforce Cloud EnvironmentIRJET Journal
This paper proposes an efficient data replication strategy to improve reliability of data stored in the Salesforce cloud environment. The strategy replicates data from Salesforce to the Amazon Web Services cloud for redundancy. It uses a lightweight time-series algorithm to predict which data files will be most frequently requested in the future and prioritizes those for replication. The number of replicas is determined dynamically based on availability thresholds. This strategy aims to improve fault tolerance, ensure data availability even if the primary Salesforce storage fails, and meet quality of service requirements in a cost effective manner for businesses using cloud computing.
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5th LF Energy Power Grid Model Meet-up SlidesDanBrown980551
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
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HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
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Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
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Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
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- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
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Guest Speaker Segment with Hannah Barrington: Dive into the world of dynamic real estate marketing with Hannah, the Marketing Manager at Workspace Group. Hear firsthand how their team generates engaging descriptions for thousands of office units by integrating diverse data sources—from PDF floorplans to web pages—using FME transformers, like OpenAIVisionConnector and AnthropicVisionConnector. This use case will show you how GenAI can streamline content creation for marketing across the board.
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Digital Marketing Trends in 2024 | Guide for Staying Ahead
Trusted Hardware Database With Privacy And Data Confidentiality
1. The International Journal Of Engineering And Science (IJES)
|| Volume || 4 || Issue || 3 || Pages || PP.12-17 || 2015 ||
ISSN (e): 2319 – 1813 ISSN (p): 2319 – 1805
www.theijes.com The IJES Page 12
Trusted Hardware Database With Privacy And Data
Confidentiality
1
E.Uma Maheswari , 2
S.Krishnamoorthi
1
PG Scholar, Department of Computer Science and Engineering ,Bharathiyar College Of Engineering And
Technology, Karaikal
2
Professor ,Head of the Department, Department of Computer Science and Engineering, Bharathiyar College
Of Engineering And Technology, Karaikal
------------------------------------------------------------ABSTRACT---------------------------------------------------------
Traditionally, as shortly as confidentiality becomes a priority, data are encrypted before outsourcing to a
service supplier. Any software-based cryptographic constructs then deployed, for server-side question process
on the encrypted information, inherently limit question quality. Here, Trusted DB has been introduced, an
outsourced database prototype that allows client to execute SQL queries with privacy and beneath restrictive
compliance constraints by leverage server-hosted, tamper-proof trusted hardware in important question process
stages, thereby removing any limitations on the sort of supported queries. Despite the value overhead and
performance limitations of trusted hardware, it has been shown that the prices per question are orders of
magnitude less than any (existing or) potential future software-only mechanisms. Trusted DB is constructed and
runs on actual hardware and its performance and prices are evaluated here.
Keywords - Database architectures, security, privacy, special-purpose hardware
--------------------------------------------------------------------------------------------------------------------------------------
Date of Submission: 10-March-2015 Date of Accepted: 25.March.2015
--------------------------------------------------------------------------------------------------------------------------------------
I. INTRODUCTION
The Overview of outsourcing and clouds are well known, significant challenges yet lie in the path of
large-scale adoption since such services often require their customers to inherently trust the provider with full
access to the outsourced data sets. Numerous instances of illicit insider behavior or data leaks have left clients
reluctant to place sensitive data under the control of a remote, third-party provider, without practical assurances
of privacy and confidentiality, especially in business, healthcare, and government frameworks. Moreover,
today’s privacy guarantees for such services are at best declarative and subject customers to unreasonable fine-
print clauses. It’s allowing the server operator to use customer behavior and content for commercial profiling or
governmental surveillance purposes. Tamper resistant designs, however, are significantly constrained in both
computational ability and memory capacity which makes implementing fully featured database solutions using
secure coprocessors (SCPUs) very challenging. Despite the cost overhead and performance limitations of trusted
hardware, we show that the costs per query are orders of magnitude lower than any (existing or) potential future
software-only mechanisms. Trusted is built and runs on actual hardware and its performance and costs are
evaluated here. In most of these efforts, data are encrypted before outsourcing. Once encrypted however,
inherent limitations in the types of primitive operations that can be performed on encrypted data lead to
fundamental expressiveness and practicality constraints.
1.1 SCOPE OF PROJECT
The introduction of new cost models and insights that explain and quantify the advantages of
deploying trusted hardware for data processing; the design, development, and evaluation of Trusted, a trusted
hardware based relational database with full data confidentiality; and detailed query optimization techniques in a
trusted hardware-based query execution model. The cost-performance trade off seem to suggest that things stand
somewhat differently. Specifically, at scale, in outsourced contexts, computation inside secure processors is
orders of magnitude cheaper than any equivalent cryptographic operation performed on the provider’s unsecured
server hardware, despite the overall greater acquisition cost of secure hardware. This is so because the overheads
for cryptography that allows some processing by the server on encrypted data are extremely high even for simple
operations. This fact is rooted not in cipher implementation inefficiencies but rather in fundamental
cryptographic hardness assumptions and constructs, such as trapdoor functions.
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Moreover, this is unlikely to change anytime soon as none of the current primitives have, in the past
half-century. New mathematical hardness problems will need to be discovered to allow hope of more efficient
cryptography. As a result, it has been posit that a full-fledged privacy enabling secure database leveraging
server-side trusted hardware can be built and run at a fraction of the cost of any (existing or future)
cryptography-enabled private data processing on common server hardware.
1.2 OVERVIEW OF PROJECT
To overcome SCPU storage limitations, the outsourced data are stored at the host provider’s site.
Query processing engines are run on both the server and in the SCPU. Attributes in the database are classified as
being either public or private. Private attributes are encrypted and can only be decrypted by the client or by the
SCPU. Since the entire database resides outside the SCPU, its size is not bound by SCPU memory limitations.
Pages that need to be accessed by the SCPU-side query processing are pulled in on demand by the Paging
Module. A client defines a database schema and partially populates it. Sensitive attributes are marked using the
SENSITIVE keyword which the client layer transparently processes by encrypting the corresponding attributes.
A client sends a query request to the host server through a standard SQL interface. The query is transparently
encrypted at the client site using the public key of the SCPU. The host server thus cannot decrypt the query. The
host server forwards the encrypted query to the Request Handler inside the SCPU. The Request Handler
decrypts the query and forwards it to the Query Parser. The query is parsed generating a set of plans. Each plan
is constructed by rewriting the original client query into a set of sub queries, and, according to their target data
set classification, each sub query in the plan is identified as being either public or private. The Query Optimizer
then estimates the execution costs of each of the plans and selects the best plan (one with least cost) for
execution forwarding it to the dispatcher. The Query Dispatcher forwards the public queries to the host server
and the private queries to the SCPU database engine while handling dependencies. The net result is that the
maximum possible work is run on the host server’s cheap cycles.
The final query result is assembled, encrypted, digitally signed by the SCPU Query Dispatcher, and sent
to the client query parsing and execution. Sensitive attributes can occur anywhere within a query, e.g., in
SELECT, WHERE, or GROUP-BY clauses, in aggregation operators, or within sub queries. The Query Parser’s
job is then: To ensure that any processing involving private attributes is done within the SCPU. All private
attributes are encrypted using a shared data encryption keys between the client and the SCPU hence, the host
server cannot decipher these attributes to optimize the rewrite of the client query such that most of the work is
performed on the host server. To exemplify how public and private queries are generated from the original client
query, use an examples from the TPC-H benchmark. TPC-H does not specify any classification of attributes
based on security. Therefore, it has been defined an attribute set classification into private (encrypted) and public
(no encrypted). In brief, all attributes that convey identifying information about customers, suppliers, and parts
are considered private. The resulting query plans, including rewrites into main CPU and SCPU components for
TPC-H queries Q3 and Q6 are illustrated for queries that have WHERE clause conditions on public attributes,
the server can first SELECT all the tuples that meet the criteria.The private attributes’ queries are then
performed inside the SCPU on these intermediate results, to yield the final result. The host server first executes a
public query that filters all tuples which fall within the desired ship date and quantity range, both of these being
public attributes.
The result from this public query is then used by the SCPU to perform the aggregation on the private
attributes extended price and discount. While performing the aggregation the private attributes are decrypted
inside the SCPU. Since the aggregation operation results in a new attribute composing of private attributes it is
re encrypted within the SCPU before sending to the client. That the execution of private queries depends on the
results from the execution of public queries and vice a-versa even though they execute in separate database
engines. This is made possible by the Trusted DB Query Dispatcher in conjunction with the Paging Module.
II. LITERATURE SURVEY
TWO CAN KEEP A SECRET: A DISTRIBUTED ARCHITECTURE FOR SECURE DATABASE
SERVICES
Researchers have recently discovered several interesting, self-organized regularities from the World Wide
Web, ranging from the structure and growth of the Web to the access patterns in Web surfing. What remains to
be a great challenge in Web log mining is how to explain user behavior underlying observed Web usage
regularities. In this paper, we will address the issue of how to characterize the strong regularities in Web surfing
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in terms of user navigation strategies, and present an information foraging agent based approach to describing
user behavior.
By experimenting with the agent-based decision models of Web surfing, we aim to explain how some
Web design factors as well as user cognitive factors may affect the overall behavioral patterns in Web usage. In
order to further characterize user navigation regularities as well as to understand the effects of user interests,
motivation, and content organization on the user behavior. An information foraging agent based model that takes
into account the interest profiles, motivation aggregation, and content selection strategies of users and,
thereafter, predicts the emerged regularities in user navigation behavior. In summary, our work offers a means
for explaining strong Web regularities with respect to user Interest Profiles, Web Content Distribution and
coupling, and user navigation strategies.
It enables us to predict the effects on emergent usage regularities if certain aspects of Web servers or user
foraging behaviors are changed. While presenting an interesting and promising research direction, it has been
point out that one of the useful extensions for future work would be to show how the quantitative representations
or constructs as used in modeling Web contents and user interest profiles. The planning Techniques help to
bridge the gap between the searching necessities and the Content Adaptation. To Monitor and Adapt the learning
object of each learning route against unexpected contingencies.
EXITING SYSTEM
Existing research addresses several such security aspects, including access privacy and searches on
encrypted data. In most of these efforts data is encrypted before outsourcing. Once encrypted however, inherent
limitations in the types of primitive operations that can be performed on encrypted data lead to fundamental
expressiveness and practicality constraints. Recent theoretical cryptography results provide hope by proving the
existence of universal homeomorphisms, i.e., encryption mechanisms that allow computation of arbitrary
functions without decrypting the inputs. Unfortunately actual instances of such mechanisms seem to be decades
away from being practical.
PROPOSED SYSTEM
A full-fledged, privacy enabling secure database leveraging server-side trusted hardware can be built
and run at a fraction of the cost of any (existing or future) cryptography-enabled private data processing on
common server hardware. It has been validate this by designing and building TrustedDB, a SQL database
processing engine that makes use of tamperproof cryptographic coprocessors such as the IBM 4764 in close
proximity to the outsourced data. Tamper resistant designs however are significantly constrained in both
computational ability and memory capacity which makes implementing fully featured database solutions using
secure coprocessors (SCPUs) very challenging. Trusted achieves this by utilizing common unsecured server
resources to the maximum extent possible. E.g., Trusted enables the SCPU to transparently access external
storage while preserving data confidentiality with on-the-fly encryption. This eliminates the limitations on the
size of databases that can be supported. Moreover, client queries are pre-processed to identify sensitive
components to be run inside the SCPU. Non-sensitive operations are off-loaded to the untrusted host server. This
greatly improves performance and reduces the cost of transactions.
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III. SYSTEM ARCHITECTURE DESIGN
Fig 3.1.1 Architecture Diagram
The outsourced data are stored at the host provider’s site. Query processing engines are run on both the server
and in the SCPU. Attributes in the database are classified as being either public or private. Private attributes are
encrypted and can only be decrypted by the client or by the SCPU.Since the entire database resides outside the
SCPU, its size is not bound by SCPU memory limitations. Query execution entails a set of stages, in the first
stage, a client defines a database schema and partially populates it. Sensitive attributes are marked using the
SENSITIVE keyword which the client layer transparently processes by encrypting the corresponding attributes.
Later, a client sends a query request to the host server through a standard SQL interface. The query is
transparently encrypted at the client site using the public key of the SCPU. The host server thus cannot decrypt
the query. The host server forwards the encrypted query to the Request Handler inside the SCPU. The Request
Handler decrypts the query and forwards it to the Query Parser. The query is parsed generating a set of plans.
Each plan is constructed by rewriting the original client query into a set of sub queries, and, according to data set
classification, each sub query in the plan is identified as being either public or private. The Query Optimizer then
estimates the execution costs of each of the plans and selects the best plan (one with least cost) for execution
forwarding it to the dispatcher. The Query Dispatcher forwards the public queries to the host server and the
private queries to the SCPU database engine while handling dependencies. The final query result is assembled,
encrypted, digitally signed by the SCPU Query Dispatcher, and sent to the client.
CLIENT (USER
QUERY)
DATABASE
ENGINE
REQUEST (USER
QUERY)
TRUSTED DB QUERY
HANDLER
PUBLIC USER QUERY
ATTRIBUTES
PRIVATE USER QUERY
ATTRIBUTES
CRYPTOGRAPHY
QUERY
OPTIMIZATION FOR
USER QUERY SERVER
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IV SYSTEM IMPLEMENTATION
4.1 MODULES AND ITS DESCRIPTION
1. Query Parsing and Execution
2. Query Optimization Process
3. System Catalog
4. Analysis Of Basic Query Operations
4.1.1 QUERY PARSING AND EXECUTION
In the first stage a client defines a database schema and partially populates it. Sensitive attributes are
marked using the SENSITIVE keyword which the client layer transparently processes by encrypting the
corresponding attributes:
CREATE TABLE customer (ID integer primary key, Name char (72) SENSITIVE, Address char (120)
SENSITIVE);
Later, a client sends a query request to the host server through a standard SQL interface. The query is
transparently encrypted at the client site using the public key of the SCPU. The host server thus cannot decrypt
the query. The host server forwards the encrypted query to the Request Handler inside the SCPU. The Request
Handler decrypts the query and forwards it to the Query Parser. The query is parsed generating a set of plans.
Each plan is constructed by rewriting the original client query into a set of sub-queries, and, according to their
target data set classification, each sub-query in the plan is identified as being either public or private. The Query
Optimizer then estimates the execution costs of each of the plans and selects the best plan (one with least cost)
for execution forwarding it to the dispatcher. The Query Dispatcher forwards the public queries to the host
server and the private queries to the SCPU database engine while handling dependencies. The net result is that
the maximum possible work is run on the host server’s cheap cycles. The final query result is assembled,
encrypted, digitally signed by the SCPU Query Dispatcher, and sent to the client.
4.1.2 QUERY OPTIMIZATION PROCESS
The Query Plan constructs to multiple plans for the client query. The constructed plan the Query Cost
Estimator computes an estimate of the execution cost of that plan. The selected and passed on to the Query Plan
Interpreter for execution. The Query Cost Estimator due to the logical partitioning of data. At a high level query
optimization in a database system works as follows. The Query Plan Generator constructs possibly multiple
plans for the client query. For each constructed plan the Query Cost Estimator computes an estimate of the
execution cost of that plan. The best plan i.e., one with the least cost, is then selected and passed on to the Query
Plan Interpreter for execution. The query optimization process in Trusted Database works similarly with key
differences in the Query Cost Estimator due to the logical partitioning of data mentioned above.
4.1.3 SYSTEM CATALOG
Any query plan is composed of multiple individual execution steps. To estimate the cost of the entire
plan it is essential to estimate the cost of individual steps and aggregate them. In order to estimate these costs the
Query Cost Estimator needs access to some key information. E.g., the availability of an index or the knowledge
of possible distinct values of an attribute. These sets of information are collected and stored in the System
Catalog. Most available DBMS today have some form of periodically updated System Catalog.
4.1.4 ANALYSIS OF BASIC QUERY OPERATIONS
The cost of a plan is the aggregate of the cost of the steps that comprise it. The execution times for a
certain set of basic query plan steps are estimated.
V CONCLUSION
Queries on encrypted data, Propose division of data into secret partitions and rewriting of range
queries over the original data in terms of the resulting partition identifiers. This balances a trade-off between
client and server-side processing, as a function of the data segment size, the propose using tuples-level
encryption and indexes on the encrypted tuples to support equality predicates. The main contribution here is the
analysis of attribute exposure caused by query processing leading to two insights. The attribute exposure
increases with the number of attributes used in an index, and the exposure decreases with the increase in
database size. Range queries are processed by encrypting individual Bþ Tree nodes and having the client, in each
query processing step, retrieve a desired encrypted Bþ Tree node from the server, decrypt and process it.
However, this leads to minimal utilization of server resources thereby undermining the benefits of outsourcing.
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Moreover, transfer of entire Bþ Tree nodes to the client results in significant network costs. Employs Order
Preserving encryption for querying encrypted XML databases. In addition, a technique referred to as splitting
and scaling issued to differ the frequency distribution of encrypted data from that of the plaintext data. Here,
each plaintext value is encrypted using multiple distinct keys. Then, corresponding values are replicated to
ensure that all encrypted values occur with the same frequency thereby thwarting any frequency-based attacks.
Use a salted version of IDA scheme to split encrypted tuples data among multiple servers. In addition, a secure
Bþ Tree is built on the key attribute. The client utilizes the Bþ Tree index to determine the IDA matrix columns
that need to be accessed for data retrieval. To speed up client-side processing and reduce network overheads, it
is suggested to cache parts of the Bþ Tree index client-side. Vertical partitioning of relations amongst multiple
un trusted servers is employed here, the privacy goal is to prevent access of a subset of attributes by any single
server. For example, {Name, Address} can be a privacy sensitive access-pair and query processing needs to
ensure that they are not jointly visible to any single server.
VI FUTURE ENHANCEMENT
The client query is split into multiple queries wherein each sub query fetches the relevant data
from a server and the client combines results from multiple servers, also use vertical partitioning in a similar
manner and for the same privacy goal, but differs in partitioning and optimization algorithms. Trusted is
equivalent to both, when the size of the privacy subset is one and hence a single server suffices. In this case, each
attribute column needs encryption to ensure privacy. Optimize for querying encrypted columns since otherwise
they rely on client-side decryption and processing. Introduce the concept of logical fragments to achieve the
same partitioning effect as on a single server. A fragment here is simply areolation wherein attributes not desired
to be visible in that fragment are encrypted. Trusted DB (and other solutions) are in effect concrete mechanisms
to efficiently query any individual fragment from. The work on the other hand, can be used to determine the set
of attributes that should be encrypted in propose an encryption scheme in a trusted-server model to ensure
privacy of data residing on disk. The FCE scheme designed here is equivalently secure as a block cipher,
however, with increased efficiency only ensures privacy of data residing on disk. In order to increase query
functionality, a layered encryption scheme is used and then dynamically adjusted (by revealing key to the server)
according to client queries. Trusted DB, on the other hand, operates in an un trusted server model, where
sensitive data are protected, both on disk and during processing. Data that are encrypted on disk but processed in
clear (in server memory), compromise privacy during the processing interval. The disclosures risks in such
solutions are analyzed also propose a new query optimizer that takes into account both performance and
disclosure risk for sensitive data. Individual data pages are encrypted by secret keys that are managed by a
trusted hardware module. The decryption of the data pages and subsequent processing is done in server memory.
Hence, the goal is to minimize the lifetime of sensitive data and keys in server memory after decryption.
REFERENCES
[1]. FIPS PUB 140-2, Security Requirements for Cryptographic Modules,http://csrc.nist.gov/groups/STM/cmvp/standards.html#02,2013.
[2]. TPC-H Benchmark, http://www.tpc.org/tpch/, 2013.
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[4]. G. Aggarwal, M. Bawa, P. Ganesan, H. Garcia-Molina, K.Kenthapadi, R. Motwani, U. Srivastava, D. Thomas, and Y. Xu,“Two Can
Keep a Secret: A Distributed Architecture for SecureDatabase Services,” Proc. Conf. Innovative Data Systems Research(CIDR), pp.
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[5]. Iliev and S.W. Smith, “Protecting Client Privacy with TrustedComputing at the Server,” IEEE Security and Privacy, vol. 3, no. 2,pp.
20-28, Mar./Apr. 2005.
[6]. M. Bellare, “New Proofs for NMAC and HMAC: Security WithoutCollision-Resistance,” Proc. 26th Ann. Int’l Conf. Advances in
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