A LITERATURE SURVEY ON KEY AGGREGATION SYSTEM FOR SECURE SHARING OF CLOUD DATA
Arun Kumar Sangaiah · 2014
Abstract—In Cloud computing, data storage is an efficient technique. This survey explains secure, efficient, and flexible method to share data with other people in cloud storage system. This survey, describe novel public-key cryptosystems. This system produce constant-size cipher texts such that efficient delegation of decryption rights for any set of cipher texts are possible. This innovation scheme can aggregate any set of secret keys and make them as a compact single key.The power of all the keys being aggregated in a single key. In other words, holder of the secret key can release a constant-size aggregate key for flexible choices of cipher text set in cloud storage.In this scheme other encrypted files outside the cipher text set remain confidential. The compact aggregate key can be suitably sent to others or be stored in a smart card with very limited secure storage. Key Words—Cloud storage, data sharing, key-aggregate encryption, patient-controlled encryption