International Journal of Advanced Research in Computer and Communication Engineering (IJARCCE)
Cloud storage is a storage of information on-line in cloud that is accessible from multiple and connected resources. Cloud storage is the storage that offers smart accessibility and dependability, sturdy protection, disaster recovery and lowest price. Cloud storage definitely has important practicality i.e. securely, sharing information with others, with great efficiency. New public-key cryptography is introduced that is termed as Key Aggregate Cryptosystem (KAC). Key-aggregate cryptosystem yield constant size cipher texts so that trustworthy relinquishment of decryption rights for a prepared bunch of cipher texts is feasible.