Dynamic Scalable Elliptic Curve Cryptographic Scheme and Its Application to In-Vehicle Security

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

5 Scopus Citations
View graph of relations


  • Jianqiang Li
  • Huihui Wang
  • Leo Yu Zhang
  • Qiuzhen Lin

Related Research Unit(s)


Original languageEnglish
Pages (from-to)5892-5901
Journal / PublicationIEEE Internet of Things Journal
Issue number4
Online published13 Sep 2018
Publication statusPublished - Aug 2019


The design of unified, efficient and lightweight cryptographic platform for resource-constrained on-board devices such as sensors, microcontrollers and actuators in the context of Internet of Vehicles (IoV) remains an open and challenging problem, for both academic and industry. Elliptic Curve Cryptography (ECC) is considered as a promising encryption algorithm for the next generation communications, as it could provide the same strong security level using relatively smaller key size when compared to the currently used RSA algorithm. However, traditional ECCs have the disadvantage of using a fixed curve, making it very easy to be intensively analyzed while being hard to construct a united platform for on-board devices with processors of different instruction lengths. To mitigate the above problem, this paper suggests a dynamic scalable elliptic curve cryptosystem. To synchronize the curve in use, a curve list of different security levels is generated and preserved on both parties. Since both parties randomly choose the curve and the prime number, a extra security level could be provided, so that the security level can still remain the same even using smaller key sizes, while the computation efficiency will be enhanced and the power consumption will be reduced, which is especially suitable for the application in on-board embedded devices. Detailed experimental results illustrate that the presented scheme improves the efficiency by 30% in average when compared with traditional ECC implementations on a similar security level. Therefore, the proposed scalable ECC scheme as a unified cryptographic platform is more economic for these on-board devices in vehicles.

Research Area(s)

  • dynamic ECC, Elliptic curve cryptography, Elliptic curves, Internet of Things, Internet of Vehicles, IoV security, Microcontrollers, Program processors, scalable ECC.