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Sensors 2014, 14(10), 17883-17904;

Design of an Elliptic Curve Cryptography Processor for RFID Tag Chips

School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
School of Science, Wuhan University of Technology, Wuhan 430074, China
Author to whom correspondence should be addressed.
Received: 9 July 2014 / Revised: 12 September 2014 / Accepted: 16 September 2014 / Published: 26 September 2014
(This article belongs to the Special Issue Wireless Sensor Networks and the Internet of Things)
Full-Text   |   PDF [1286 KB, uploaded 26 September 2014]


Radio Frequency Identification (RFID) is an important technique for wireless sensor networks and the Internet of Things. Recently, considerable research has been performed in the combination of public key cryptography and RFID. In this paper, an efficient architecture of Elliptic Curve Cryptography (ECC) Processor for RFID tag chip is presented. We adopt a new inversion algorithm which requires fewer registers to store variables than the traditional schemes. A new method for coordinate swapping is proposed, which can reduce the complexity of the controller and shorten the time of iterative calculation effectively. A modified circular shift register architecture is presented in this paper, which is an effective way to reduce the area of register files. Clock gating and asynchronous counter are exploited to reduce the power consumption. The simulation and synthesis results show that the time needed for one elliptic curve scalar point multiplication over GF(2163) is 176.7 K clock cycles and the gate area is 13.8 K with UMC 0.13 μm Complementary Metal Oxide Semiconductor (CMOS) technology. Moreover, the low power and low cost consumption make the Elliptic Curve Cryptography Processor (ECP) a prospective candidate for application in the RFID tag chip. View Full-Text
Keywords: wireless sensor network; RFID; Elliptic Curve Cryptography (ECC); processor wireless sensor network; RFID; Elliptic Curve Cryptography (ECC); processor
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Liu, Z.; Liu, D.; Zou, X.; Lin, H.; Cheng, J. Design of an Elliptic Curve Cryptography Processor for RFID Tag Chips. Sensors 2014, 14, 17883-17904.

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