AN EFFECTIVE SEARCH OF CLOUD DATA USING ABC BASED CRYPTOGRAPHY AND MULTIPLE KEYWORD SEMANTICS

Cloud computing enables the organizations to outsource their information and data by providing a service model known as IaaS (Infrastructure as a Service). In a public cloud, the cloud service provider manages the infrastructure and it is situated in the provider's control. The documents are encrypted before outsourcing in order to protect the privacy of sensitive data. When the number of encrypted documents is exponentially increased, the search service and retrieval becomes critical. The process of retrieving files consisting of queried keyword leads to unnecessary network traffic. In this paper, a secure scheme with multi keyword search is proposed for encrypted cloud data. A searchable index is generated for the data that has to be outsourced to the cloud. Encryption of data is performed using Association Based Cryptography (ABC). The encrypted data is wrapped with index and then outsourced. The searched result is ranked by the cloud server according to Robust Searchable Symmetric Encryption (RSSE) ranking criteria in order to enhance the document retrieval accuracy. This approach provides high security by using ABC. The experimental results show that the method provides efficient integrity verification for the transferred data and achieves minimum overhead for both communication and computation.