Homomorphic Encryption versus RSA: Cloud Security Performance Analysis

Recently, information has been exchanged easily through internet, thanks to the advancement of communications and computations. Internet users are increasing every year, causing traffic in sending and receiving data to be more congested. Even though traffic on the internet is getting denser, data security must be ensured so that important data can be safe and not stolen by irresponsible parties. Therefore, in this paper, data security in the cloud is implemented using homomorphic encryption which can process data in an encrypted state. The experimental results show that the implementation of homomorphic encryption on dense traffic provides a stable processing speed, where encryption, operation, and decryption with sending 10 consecutive times takes 442 seconds, while encryption, operation, and decryption of 1000 data takes 207 second. This implementation is needed for cloud services that have heavy data traffic and require security.