Nowadays, cloud data outsourcing provides users and companies with powerful capabilities to store and process their data in third-party data centers. However, the privacy of the outsourced data is not guaranteed by the cloud providers. One solution for protecting the user data against security attacks is to encrypt the data before being sent to the cloud servers. Then, the main problem is to ev...

The Cloud Computing, it provide more security for the data owners and clients. As increasing popularity of cloud computing, more and more data owners are motivated to their data to cloud servers for great convenience and reduced cost in data management. So, sensitive data should be encrypted before outsourcing for privacy requirements, which obsoletes data utilization like keywordbased document...

With the growing importance of cloud computing, database encryption has become a critical technology to protect data against honest-but-curious attackers. Our goal is to encrypt the data in such a way that it remains protected against powerful attackers and at the same time achieve good performance by processing queries in the cloud without decrypting the data. Order-Preserving Encryption (OPE)...

For both convenience and security, more and more users encrypt their sensitive data before outsourcing it to a third party such as cloud storage service. However, searching for the desired documents becomes problematic since it is costly to download and decrypt each possibly needed document to check if it contains the desired content. An informative query-biased preview feature, as applied in m...

When outsourcing data to an untrusted database server, the data should be encrypted. When using thin clients or low-bandwidth networks it is best to perform most of the work at the server. In this paper we present a method, inspired by secure multi-party computation, to search efficiently in encrypted data. XML elements are translated to polynomials. A polynomial is split into two parts: a rand...

Predicate encryption is a new encryption paradigm where the secret key owner can perform fine-grained access control over the encrypted data. In particular, the secret key owner can generate a capability corresponding to a query predicate (e.g., whether an encrypted email contains the keyword MEDICAL), and the capability allows one to evaluate the outcome of this predicate on the encrypted data...

Privacy of data owners and query users is vital in modern clouding data management. Many researches have been done on cloud security, but most of them are focused on the privacy of data owners or of query users separately. How to protect the privacy of the data owners and users simultaneously is a great challenge. In this paper, a solution of data storage and query protocol based on classical h...

Encryption secures our stored data but seems to make it inert. Can we process encrypted data without having to decrypt it first? Answers to this fundamental question give rise to a wide variety of applications. Here, we explore this question in a number of settings, focusing on how interaction and secure hardware can help us compute on encrypted data, and what can be done if we have neither int...