Analytical study of hardware-rooted security standards and their implementation techniques in mobile

Naveeda Ashraf (), Ashraf Masood (), Haider Abbas (), Rabia Latif () and Narmeen Shafqat ()
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Naveeda Ashraf: National University of Sciences and Technology
Ashraf Masood: National University of Sciences and Technology
Haider Abbas: National University of Sciences and Technology
Rabia Latif: Prince Sultan University
Narmeen Shafqat: National University of Sciences and Technology

Telecommunication Systems: Modelling, Analysis, Design and Management, 2020, vol. 74, issue 3, No 9, 379-403

Abstract: Abstract Security of information in computers is of paramount importance. Considering the software security as inadequate, hardware rooted security standards were developed as Trusted Platform Module (TPM) 1.0 in 2003 and subsequently as TPM 2.0 in 2012. While trustworthy, these standards and their corresponding implementation in hardware as TPM chips were found to be inappropriate for mobile computing devices due to their small form factor, low computing resources, limited battery power and cost. Given these challenges, software derivative of TPM was devised for mobile devices as TPM Mobile. However, TPM Mobile was rarely implemented in real devices primarily due to lack of trust in its software nature. Another standard named as MTM also emerged as derivative of TPM but was never adopted widely due to physical limitations of the mobile devices that have been further constrained after introduction of Internet of Things. Subsequently, a software-cum-hardware combo implementation appeared in ARM-based mobile CPUs by the name of TrustZone as a trade-off between hardware and software. Although widely adopted ARM TrustZone has also been considered as inadequate vis-a-vis TPM standards. After conducting a comparative analysis of various security standards, this paper proposes mTPM, a comprehensive security standard. As such mTPM not only addresses prevalent information security requirements of mobile devices but also considers their physical constraints. mTPM primarily suggests an implementation of a security processor integrated within existing CPU, as stand-alone chip was considered infeasible for mobile devices. The detailed architectural model of mTPM has also been included as guidelines for uniformly secure implementation and standardization. In view of its advantages, mTPM is expected to find greater adoption and refinements over time.

Keywords: ARM TrustZone; MTM; NIST; Roots of trust; TPM; Hardware-Rooted security (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1007/s11235-020-00656-y

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