Secure Rendering Process in Cloud Computing

Big animated film companies these days are migrating their operations to the advent technology of cloud computing. They need quick access to massive amounts of computer power from the cloud to generate a photorealistic animated film within reasonable time and cost as well. However, moving private data to untrusted third parties like clouds raises security concerns. Primitive encryption schemes seem ineffective to be used as the data need to be decrypted first. Thus, homomorphic encryption is believed to be one of the potential solutions as it allows arbitrary computation on encrypted data without decryption. There are a number of fully homomorphic encryption (FHE) schemes that have been proposed and improved upon. Nevertheless, all of them are far from practical as efficiency is still a big obstacle for their implementation. Thus, in this paper a new FHE scheme based on finite fields and support n-multilinear maps is proposed. The key contribution of this paper is to propose a FHE scheme with improved efficiency. To implement such a scheme, a new protocol is proposed. The protocol allows three or more parties to communicate with one another to process data in an encrypted form.