Generating Aggregate Key for Group Data Sharing by Means of Cloud Data Storage
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Abstract
Sharing of encrypted data with various kinds of users via public cloud storage always leads to greater security concerns over many types of data leaks in the cloud. To make it possible, efficient generation of keys and their management should take place in developing schemes. In the situation of sharing any class of documents to any class of users demands various numbers of encryption keys for each document used. Further, need a large number of keys for keyword query searching for each document used. This increases the complexity in generating various numbers of keys for decrypting the document and decreases the efficiency of keyword query searching. This also makes the user to store large number of keys for both encryption and search which makes the situation impractical. In this we approached, by suggesting concept of key aggregate searchable encryption (KASE) and initializing the idea through a real KASE scheme, in which the data owner will send a single aggregate key of group of documents to group of authorized users, and the user will send a single trapdoor to the cloud server for keyword query searching.
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