Shell-Based Block Ciphering Structure (SBCS) for AES Parallelism with Feedback-Data Mode

It is generally agreed that multiple hardware resources increase computing speed as each core provides individual data output. The provision of individual data output enables multiple cores to process and output data from each core independently. The individual characteristics of multiple hardware resources enhances data ciphering speed and outputs individual streams of cipher text. After enciphering, full text data are partitioned equally into separate, individual cipher text streams, each being equivalent to a separate, individual copy of cipher text. In the data encryption with block ciphers area, a feedback-data mode of operation such as CBC is the more favored block ciphering mode. However, due to it needs the previous block of data to find out the current block of cipher text, feedback-data mode could not encrypt each plaintext independently, so that it does not work with the multiple cores system. To conquer these problems, the Shell-based Block Ciphering Structure (SBCS) is proposed in this paper by modifying the operation feedback path to fit to the multiple cores operation environment.