CDCEP: Securing the Compressed Data using Certificateless Encryption in Public Clouds

User data must be secured from intruders and the channel must be safer too. Before, many organizations depend on local server/flash drives to store their data that may lead to data loss. Cloud storage secures data on remote servers and provides online access to the data. What if the key generator compromises with the intruders and share the keys? In this paper, an architecture is proposed that does not use any key generator to generate the key and any authority to certify it. The CDCEP makes use of LZ4 algorithm and RC4 algorithm to compress and encrypt the fragments of file respectively before uploading it to the cloud. The performance of the proposed system is analyzed with respect to uploading/downloading time and the amount of storage required in storing a file in the cloud. It is observed that the time taken and storage required is reduced as compared to the existing system mCL-PKE.