Fast, Scalable, and Secure encryption on the GPU

In this paper we present GPU based implementations of popular encryption schemes Blowfish and the Advanced Encryption Standard (AES). The performance of these im-plementations is better than a conventional CPU based implementation by a factor of 40x. These implementations scale linearly with a growing input size as well as the number of computational cores available on the GPU. We further analyze the security of these implementations against standard attacks on implementations (also known as side channel attacks), specifically timing attacks. Based on our analysis we also present versions of these encryption schemes that are resistant to such attacks. Using an Nvidia GTX280 we are able to obtain encryption speeds of up to 32GBps. 1