ECC-CRT: An Elliptical Curve Cryptographic Encryption and Chinese Remainder Theorem based Deduplication in Cloud

Cloud computing provides the data storage facility for the maintenance, management and remote backup of the data. The storage cost and data retrieving time has increased. To encrypt, the Elliptical Curve Cryptographic and to generate key the Chinese Remainder Theorem (ECC-CRT) based deduplication scheme is proposed. Data deduplication is the process of eliminating the repeated data in cloud storage. Cloud service provider receives the encrypted data and checks for duplication. Deduplication is performed by using cosine similarity checking. The advantage of the method is, it avoids malicious upload and downloads in storage space. The performance is compared with existing methods.