With the advent of cloud computing, many organizations and individuals are interested in outsourcing their complex data management to the public cloud for economic savings and ease of access. As sensitive information may have to be encrypted before outsourcing, the data utilization service based on plaintext keyword search is not suitable for the encrypted cloud data. In this paper, we propose ...

Secure computation has been a powerful and important research area in cryptography since the first breakthrough results in the 1980s. For many years this area was purely theoretical, as the feasibility results have not been considered even close to practical. Recently, it appears to have turned a corner, with several research efforts showing that secure computation for large classes of function...

With the increased rate of growth and adaptation of cloud computing, daily, more and more sensitive information is being centralized onto the cloud. For the protection of valuable proprietary information, the data must be encrypted before outsourcing. There is no tolerance for typos and format inconsistencies which are normal user behavior. This makes effective data storage and utilization a ve...

SEWASIE is implementing an advanced search engine that provides intelligent access to heterogeneous data sources on the web via semantic enrichment. This can be thought of as the basis of structured secure web-based communication. SEWASIE provides users with a search client that has an easy-to-use query interface, and which can extract the required information from the Internet and to show it i...

Web search has become an integral part of our lives and we use it daily for business and pleasure. Unfortunately, however, we unwittingly reveal a huge amount of private information about ourselves when we search the web. A look at a user’s search terms over a period of a few months paints a frighteningly clear and detailed picture about the user’s life. In this paper, we build on previous work...

In this paper, we analyze the security of the mutual authentication and search protocols recently proposed by Tan et al. [20]. Our security analysis clearly highlights important security pitfalls in these. More precisely, privacy location of the tags’ holder is compromised by the authentication protocol. Moreover, the static identifier which represents the most valuable information that a tag s...

---------------------------------------------------------------------***--------------------------------------------------------------------Abstract The emerging need of the secure ciphers has lead to the designing and analysis of many lightweight block ciphers. In this respect, many lightweight block ciphers have been designed, of which is simple AES, one of the popular proposed secure block c...

We consider a simple and secure way to realize a synchronous stream cipher from iterated hash functions. It is similar to the OFB mode where the underlying block cipher algorithm is replaced with the keyed hash function, adopting the secret suffix method[20]. We analyzed the key, the keystream and the necessary properties to assume from the underlying hash function for the stream cipher to be c...