Enhancing cloud computing security by paillier homomorphic encryption.

In recent years, the trend has increased for the use of cloud computing, which provides broad capabilities with the sharing of resources, and thus it is possible to store and process data in the cloud remotely, but this (cloud) is untrusted because some parties can connect to the network such as the intemet and read or change data because it is not protected, therefore, protecting data security and privacy is one of the challenges that must be addressed \\~1en using cloud computing. Encryption is interested in the field of security, confidentiality and integrity of infonnation that sent by a secure connection between individuals or institutions reirnrdless of the method used to prepare this connection. But using the traditi;nal encryption methods to encrypt the data before sending it will force the data provider to send his private key to the server to dec1ypt the data to perfonn computations on it. In this paper we present a proposal to secure banking data transmission through the cloud by us ing paitially homomorphic enc1yption algoritluns such as (paillier, RSA algorithm) that allow performing mathematical operations on encrypted data without ne.e.ding to de.c1yption. A proxy server will also use for performing re-encryption process to enhance security. [ABSTRACT FROM AUTHOR]