First, we propose the merger of SNOW 3G and ZUC stream ciphers, which constitute a part of the 3GPP LTE-Advanced security suite. We propose HiPAcc-LTE, a high performance integrated design that combines the two ciphers in hardware, based on their structural similarities. The integrated architecture reduces the area overhead significantly compared to two distinct cores, and also provides almost double throughput in terms of keystream generation, compared with the state-of-the-art implementations of the individual ciphers.
As our second case study, we present IntAcc-RCHC, an integrated accelerator for the stream ciphers RC4 and HC-128. We show that the integrated accelerator achieves a slight reduction in area without any loss in throughput compared to our standalone implementations. We also achieve at least 1.5 times better throughput compared to general purpose processors. Long term vision of this hardware integration approach for cryptographic primitives is to build a flexible core supporting multiple designs having similar algorithmic structures.
Category / Keywords: implementation / Stream Ciphers, Integrated Accelerator, ASIC, Area Efficiency, High Throughput, 3GPP LTE-Advanced, SNOW 3G, ZUC, RC4, HC-128. Publication Info: Extended version of the INDOCRYPT 2011 paper by Sen Gupta, Chattopadhyay and Khalid. Date: received 31 Jan 2012 Contact author: sg sourav at gmail com Available format(s): PDF | BibTeX Citation Version: 20120201:041741 (All versions of this report) Short URL: ia.cr/2012/048 Discussion forum: Show discussion | Start new discussion