In this paper we construct a new interactive identification scheme based on the conjugacy problem. We prove that this scheme is secure against passive attacks if the matching triple search problem (MTSP) is intractable. Our proof is based on the fact that the conjugacy search problem (CSP) is hard in braid group, on the other hand, the conjugacy decision problem (CDP) is easy in braid group by ...

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...

In this paper, we propose a pretty-simple password-authenticated key-exchange protocol, which is proven to be secure in the standard model under the following three assumptions. (1) DDH (Decision DiffieHellman) problem is hard. (2) The entropy of the password is large enough to avoid on-line exhaustive search (but not necessarily off-line exhaustive search). (3) MAC is selectively unforgeable a...

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...

An effective search that give the better suggestion to the user so that the user can get better choices for the services is also a challenge for cloud computing. Several methods have been given to solve the problem of effective and secure ranked keyword search of cloud data. Ranked search greatly enhances system usability by returning the matching files in a ranked order regarding to certain re...

With the growing number of older adults who adopt mobile technology in their life, a new form of challenge faces both them, as well as the software engineering communities. This challenge is the issue of safety, not only in the context of risk older adults already face online, but also, due to the mobile nature of the used applications, real life safety issues raising from the use of on-line so...

The field of bioinformatics has experienced rapid development during the last few years. The volume of data generated at universities and private firms has created a new problem for the bioinformatics researcher: how to retrieve the data from several distributed, heterogeneous databases and how to ensure that the retrieved data is securely transmitted in a computationally efficient fashion. Sev...

Massively deploying RFID systems that preserve data integrity and security is a major challenge of the coming years. Since RFID tags are extremely constrained in time and space, enforcing high level of security with excessive cryptographic computation is not possible. Secured mechanisms for tag authentication have been in the midst of researcher’s interest for almost a decade. One extension of ...

This paper presents a unified framework that supports different types of privacy-preserving search queries over encrypted cloud data. In the framework, users can perform any of the multi-keyword search, range search and k-nearest neighbor search operations in a privacypreserving manner. All three types of queries are transformed into predicate-based search leveraging bucketization, locality sen...