To ensure security, encryption techniques play a major role when data are outsourced to the cloud. Problem of retrieving the data from the cloud servers is considered. Many searching techniques are used for retrieving the data. This study focused on a set of keyword based search algorithms. It provides secure data retrieval with high efficiency. It concludes Ranked Searchable Symmetric Encrypti...

This paper proposes a client-server decision tree learning method for outsourced private data. The privacy model is anatomization/fragmentation: the server sees data values, but the link between sensitive and identifying information is encrypted with a key known only to clients. Clients have limited processing and storage capability. Both sensitive and identifying information thus are stored on...

In the last years, data outsourcing has received an increasing attention by the research community thanks to the benefits that it brings in terms of data management. A basic requirement in such a scenario is that outsourced data be made accessible only to authorized users, that is, no unauthorized party (including the storing server) should have access to the data. While existing proposals prov...

Two sets of privacy requirements need to be fulfilled when a company’s accounting data is audited by an external party: the company needs to safeguard its data, while the auditors do not want to reveal their investigation methods. This problem is usually addressed by physically isolating data and auditors during the course of an audit. This approach however no longer works when auditing is perf...

-Cloud computing has become an affordable technology for outsourcing data. This will help individuals and organizations to have plethora benefits such as storage, platform, software and other services. In spite of the advantages, the cloud users have security concerns as the cloud server is considered “untrusted”. In this paper we propose and build a security mechanism that provides complete se...

The amount of information held by organizations’ databases is increasing very quickly. A recently proposed solution to the problem of data management, which is becoming increasingly popular, is represented by database outsourcing. Several approaches have been presented to database outsource management, investigating the application of data encryption together with indexing information to allow ...

In cloud computing, documents can be outsourced to the server achieve flexible access control and efficient sharing among multiple users. The intelligently searched according some keywords with help of server. During search process, private information may leaked since contain sensitive However, existing privacy-preserving keyword schemes have high computation complexity, which are not suitable...

In this project the utilization and combining of public key based homomorphic authenticator with random masking to achieve the preservation of privacy to the public cloud data auditing system which meets all the above requirements. If there is a situation for multi auditing tasks then we further extend the technique of bilinear aggregate signature to extend the main result to multi user setting...

Database Outsourcing is a nascent data management paradigm in which the data owner stores the confidential data at the third party service provider’s site. The service provider is responsible for managing and administering the database and allows the data owner and clients to create, update, delete and access the database. There are chances of hampering the security of the data due to untrustwo...

Although outsourcing data to cloud storage has become popular, the increasing concerns about data security and privacy in the cloud blocks broader cloud adoption. Ensuring data security and privacy, therefore, is crucial for better and broader adoption of the cloud. This tutorial provides a comprehensive analysis of the state-of-the-art in the context of data security and privacy for outsourced...