Privacy and security issues limit the query executions over genomics datasets, notably single nucleotide polymorphisms (SNPs), raised by sensitivity of this type data. Therefore, it is important to ensure that executing queries on these datasets do not reveal sensitive information, such as identity individuals their genetic traits, a data server. In paper, we propose present novel model, call P...

Assume that a client outsources his database to a remote storage-provider (the server), so that for privacy reasons, the client’s database is encrypted by his secret key. During a PIR-writing protocol, the client updates one element of the encrypted database without revealing to the semi-honest server which element was updated and, of course, to which value. The best previous PIR-writing protoc...

We propose a multi-user key and data exchange protocol, which is able to manipulate stored encrypted data without need to decipher. This protocol can be used by several clients at any given time, which are connected to a server, for keys and data exchanges. The ciphered data located in client and that located in the server is exchanged, stored, compared and processed without the need to deciphe...

To protect database confidentiality even in the face of full compromise while supporting standard functionality, recent academic proposals and commercial products rely on a mix of encryption schemes. The common recommendation is to apply strong, semantically secure encryption to the “sensitive” columns and protect other columns with property-revealing encryption (PRE) that supports operations s...

Database security prevents the disclosure of confidential data within a database to unauthorized users, and has become an urgent challenge for a tremendous number of database applications. Data encryption is a widely-used cryptographic technique for realizing database security in which the data kept in the database are encrypted into ciphertext. Inspired by Lin et al.’s database encryption syst...

Windows Search maintains a single database of the files, emails, programmes and Internet history of all the users of a personal computer, providing a potentially valuable source of information for a forensic investigator, especially since some information within the database is persistent, even if the underlying data are not available to the system (e.g. removable or encrypted drives). However,...