Attribute-Based Technique for Searchable Encryption on Cloud Storage

Cloud computing and cloud services are getting popularity because it providing low cost solution for storages and high speed data computation. Now data are transferring local storage to cloud because of its feature of large storage on low price. But cloud some time untreatable because of lack data confidentiality against to third parties. cloud servers are using some cryptographic technology for protection data at the time of downloading. However it is difficult to perform some task on encrypted data like searching of data over cloud. To solve this issue Encrypted encryption technique are use. Single user setting searchable encryption is more efficient in compare to multi-user setting. Here we proposed attribute-based searchable encryption technique for multi-owner to multi-user search. This technique keep the data safe in the cloud next to the various third party attack on data. It allow user to execute search process on encrypted data only when they have appropriate authorization. Searching is perform on token basis , tokens are generated by user instead of owner of data. We conform with this technique that the token confidentiality and index confidentiality are better confined in our scheme. Any illegal user & cloud servers are not capable to get some info regards search token and ciphertexts. We user constant size ciphertexts for reduced the time complexity and bandwidth of our scheme.