We propose the concept of selective document retrieval (SDR) from an encrypted database which allows a client to store encrypted data on a third-party server and perform efficient search remotely. We propose a new SDR scheme based on the recent advances in fully homomorphic encryption schemes. The proposed scheme is secure in our security model and can be adapted to support many useful search f...

In recent years, encrypted databases have emerged as a promising direction that provides data confidentiality without sacrificing functionality: queries are executed on encrypted data. However, existing practical proposals rely on a set of weak encryption schemes that have been shown to leak sensitive data. In this paper, we propose Arx, the first practical and functionally rich database system...

MONOMI is a system for securely executing analytical workloads over sensitive data on an untrusted database server. MONOMI works by encrypting the entire database and running queries over the encrypted data. MONOMI introduces split client/server query execution, which can execute arbitrarily complex queries over encrypted data, as well as several techniques that improve performance for such wor...

The use of database management systems (DBMSs) as a cloud service is rapidly expanding. Cloud DBMSs offer many advantages, such easier management, lower costs, and greater scalability. However, there are still security concerns regarding attacks from adversaries. that searchable encryption have been investigated with regard to ensuring their security. Because allows query execution over encrypt...

Homomorphic encryption has been used for supporting simple aggregations, numeric calculations on encrypted data as well as for private information retrieval. Recently, theoretical breakthroughs on homomorphic encryption resulted in fully homomorphic encryption, which is able to compute arbitrary functions on encrypted data. As a result, homomorphic encryption is generally believed to be the hol...

Database outsourcing is becoming increasingly popular introducing a new paradigm, called database-as-a-service, where an encrypted client’s database is stored at an external service provider. Existing proposals for querying encrypted databases are based on the association, with each encrypted tuple, of additional indexing information obtained from the plaintext values of attributes that can be ...

In order to monitor the use of network transmission software, the network penetrating technique based on encrypted proxy is discussed. By comparing the behavior of related penetration software, the concept of communication fingerprint is introduced to expand the extension of the communication features. The fingerprints database of encrypted proxy software with specific characteristics is constr...

Rapid advances in the networking technologies have prompted the emergence of the ‘‘software as service’’ model for enterprise computing, moreover, which is becoming one of the key industries quickly. ‘‘Database as service’’ model provides users power to store, modify and retrieve data from anywhere in the world, as long as they have access to the Internet, thus, being increasingly popular in cu...

Ideally, a privacy-preserving database-in-the-cloud environment would allow a database owner to outsource its encrypted database to a cloud server. The owner would retain control over what records can be queried and by whom, by granting each authorized user a search token and a decryption key. A user would then present this token to cloud server who would use it to find encrypted matching recor...