Data sharing is an important functionality in cloud storage. In this paper, we show how to
securely, efficiently, and flexibly share data with others in cloud storage. We describe new public…

… and send single key for sharing. A new way for public-key encryption is used called as
keyaggregate cryptosystem (KAC)[1]. The encryption is done through an identifier of Ciphertext …

… We presented a key-aggregate cryptosystem in which the number of keys was … storage is
an important functionality. Therefore, we propose a key-aggregate authentication cryptosystem …

… In this section, we present the design of the basic keyaggregate cryptosystem introduced
in [6] using asymmetric bilinear pairings that are practical and efficiently implementable, and …

… and found that Key aggregate cryptosystem is more efficient … key aggregate cryptosystem
is more secure and provide more flexibility during sharing of data with other in cloud storage. …

… These significant lyrics the costs of storing and transmitting cipher texts, which is impractical
in various circumstances such as the shared cloud storage. By means of we stated, our …

… —Data sharing is a significant functionality in cloud storage. These cloud storage provider
are answerable for keeping the data … A key-aggregate encryption scheme contains five …

… keyaggregate encryption. Then we describe how to use KAC in a scenario of its application
in cloud storage. … , which is impractical in many situations such as shared cloud storage. As …

… We solve this problem by introducing a special type of public-key encryption which we call
key-aggregate cryptosystem (KAC). In KAC, users encrypt a message not only under a public-…

… scheme that can satisfy both requirements (the key-aggregate cryptosystem [4], which
has inspired … we first define a general framework of key aggregate searchable encryption (KASE) …