In recent day, the enormous usage of cloud services leads to much concerned on cloud security. This paper primarily considers the important aspect of cloud security based on encryption. The users perform secure search on cloud environment using this method. Data stored in cloud are encrypted which ensure the privacy of the user; the files are encrypted before uploading. At the time of searching...

The goal of this work is to separately control individual secure sessions between unlimited pairs of multicast receivers and senders. At the same time, the solution given preserves the scalability of receiver initiated Internet multicast for the data transfer itself. Unlike other multicast key management solutions, there are absolutely no side effects on other receivers when a single receiver j...

Virtual private local area network service (VPLS) is a layer 2 service provider-provisioned virtual private network service. Security is one of the key system requirements of a VPLS because it delivers the frames via an untrusted network. Several VPLS architectures are proposed during the recent years. However, many of them do not provide a sufficient level of security. On the other hand, the e...

The goal of this work is to separately control individual secure sessions between unlimited pairs of multicast receivers and senders. At the same time, the solution given preserves the scalability of receiver initiated Internet multicast for the data transfer itself. Unlike other multicast key management solutions, there are absolutely no side effects on other receivers when a single receiver j...

In a private similarity search (PSS) protocol, a client receives from the database the entry, closest to her query, without either the client or the database getting to know more information than necessary. PSS protocols have potentially wide application in areas like bioinformatics, where precise queries might be impossible. We show that the previously proposed PSS protocols by Du and Atallah ...

This paper presents a practical solution to the problem of limited bandwidth in Quantum Key Distribution (QKD)secured communication through using rapidly rekeyed Internet Protocol security (IPsec) links. QKD is a cutting-edge security technology that provides mathematically proven security by using quantum physical effects and information theoretical axioms to generate a guaranteed non-disclose...

Encrypted search — performing queries on protected data — is a well researched problem. However, existing solutions have inherent inefficiency that raises questions of practicality. Here, we step back from the goal of achieving maximal privacy guarantees in an encrypted search scenario to consider efficiency as a priority. We propose a privacy framework for search that allows tuning and optimiz...

background : health systems search for ways of making their services more responsive to patients and the public the new framework of the world health organization (who) for assessment of health system performance has determined health, responsiveness and fairness of financing as the main goals. this study aimed to compare patients’ and nurses’ view points about responsiveness among a sample of ...