Secured and Scalable Data Sharing by Authenticated User Using Key Aggregate Cryptosystem Technique

Shreya Kulkarni, Channa, Madavi Chandani, Kulkarni
User's data is stored remotely on cloud server. Many of the online services are provided by cloud computing.This paper aims at secure data sharing in cloud storage by using key aggregate cryptosystem. It more focuses on aggregation of secret keys and making them compact as a single aggregate key. Master (user) produces constant size cipher text keys which can be stored in any kind of storage. Aggregate keys are shared via secured communication. Client uses aggregate keys given by the user and
more » ... n by the user and decrypts the shared data. Hence complete authenticate communication is achieved. Authentication of user is achieved using SHA algorithm.