Abstrait

Secured Data Sharing In Cloud through Key Aggregation

Aruna Kumara B, Aravinda Thejas Chandra

This paper demonstrates the sharing of data in cloud in a safety and unique way. The data sharing in cloud is a requisite functionality and providing security to this data during data sharing. It is an important and essential functionality, because the data might be susceptible to privacy and security issues which will minimizes the efficiency. The present work guarantees solutions to above concerns such that efficiency, privacy and security during sharing of data. A new public key encryption called key aggregation technique is discussed in this work. Key aggregation technique produces constant size ciphertexts, so that decryption of any set of ciphertexts is possible. Here, the individuals can aggregate any number of secret keys into a single one by holding the power of all keys. One who holds the aggregated key can share the key for accessing of files by maintaining the confidentiality of other files which he wouldn’t like to share. This aggregated key can be sent to others for decryption of ciphertext sets.