Instructions and hardware designs for accelerating SNOW 3G on a software-defined radio platform

Abstract

Software-defined radio (SDR) is a new technology transitioning from research into commercial markets. SDR moves hardware-dominant baseband processing of multiple wireless communication protocols into software on a single chip. New cellular standards, such as HSPA?, LTE, and LTE?, require speeds in excess of 40 Mbps. SNOW 3G is a new stream cipher approved for use in these cellular protocols. Running SNOW 3G in software on our SDR platform provides a throughput of 19.1 Mbps per thread for confidentiality and 18.3 Mbps per thread for integrity. To have secure cellular communications in SDR platforms for these new protocols, the performance of security algorithms must be improved. This paper presents instruction set architecture (ISA) extensions and hardware designs for cellular confidentiality and integrity algorithms using SNOW 3G. Our ISA extensions and hardware designs are evaluated for the Sandbridge Sandblaster TM 3011 (SB3011) SDR platform. With our new SNOW 3G instructions, the performance of confidentiality and integrity improve by 70 and 2%, respectively. For confidentiality, power consumption increased by 2%, while energy decreased by 40%. For integrity, power consumption remained consistent, while energy decreased by 2%.

Software implementation of the SNOW 3G Generator on iOS and Android platforms

“…From the obtained data, it is clear that the performance in recursive mode is not appropriate for iOS because the resulting throughput in that case is very low. On the other hand, the behaviour of this recursive implementation in Android is much better, and indeed it is better than some previous software implementations [19], where the obtained throughput in some cases was 18.3 Mbps. A fact that can explain this is that the obtained percent of total processing time for the multiplication in our recursive implementation for iOS is much higher than the one obtained in those analyses.…”