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%.
This paper presents Dynamic Address Validation Array (DAVA), a novel moving target defense protocol for the Controller Area Network Bus (CAN bus). DAVA's primary goal is to mitigate the common CAN bus vulnerability of an unauthorized entity misappropriating components in the vehicle through sniffing and reusing ECU IDs for replaying messages. Using a dynamically allocated array stored in the ECU that is updated and validated frequently, DAVA limits an attacker's ability to reuse ECU IDs for replay attacks. The protocol strives to be minimally invasive and lightweight for application in CAN bus while still being secure. This paper discusses the DAVA protocol, a proof of concept implementation, and initial performance measurements. This paper explains how DAVA is able to provide a robust security framework for CAN bus without the need for a large amount of storage or CAN bus standard modification. CCS CONCEPTS • Networks → Naming and addressing; In-network processing; • Security and privacy → Information flow control;
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