Paper Details

Data sharing is important functionality in cloud storage .To address user concerns over potential data leaksin cloud storage a common approach is for the data owner to encrypt all the data before uploading them to the cloud,such that later the encrypted data may be retrieved and decrypted by those who have the decryption keys. A keychallenge to designing such encryption schemes lies in the efficient management of encryption keys. This also implies thenecessity of securely distributing to users a large number of keys for both encryption in search and user will have tosecurely store the received key and submit an equally large number of keywords trapdoors to the cloud in order toperform search over the shared data. The practical problem of privacy preserving data sharing system based on publiccloud storage which requires a data owner to distribute a large number of keys to users to enable them to access his/herdocuments. By addressing this practical problem which is largely neglected in literature, we propose the novel conceptof key aggregate searchable encryption (KASE) in which data owner only need to distribute a single key to user forsharing large number of documents and user only needs to submit a single trapdoor to the cloud for querying the shareda large number of documents.

PROF. SANTOSH SHAMRAO DARAWADE, “Key Aggregation for Data Sharing in Cloud”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 5, Issue 1, pp. 99-103, January 2018.