SECURED ARCHITECTURE FOR MULTI-CLOUD USING KEY AGGREGATION TECHNIQUE

Abstract

Data storage and data sharing is the most important aspect in cloud computing, so sharing data and storing it in a secure way is the biggest task when adopting cloud services. In this paper, we will discuss how to share and store data effectively which will prevent the third party to access the secure data in cloud storage. This article provides a survey of using multiple clouds to achieve a security. In this we are introducing a public-key encryption known as Key-aggregate Cryptosystem (KAC). Cryptography is a technique which encodes a data using some key and produces unreadable data so that only a desired party is able to decode that data. KAC produces a constant size ciphertexts (unreadable data) such that decryption right for any set of ciphertexts are possible, means one can aggregate any set of secret keys and make them as compact as single key, but encompassing the power of all the keys being aggregate. This aggregate key is sent to other via secure channel (or via email) for decrypting the ciphertext set and remaining files outside the set are remains secret.