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Mathematical Problems in Engineering
Volume 2015, Article ID 616182, 6 pages
Research Article

Enhanced-Bivium Algorithm for RFID System

School of Information Security Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai 200240, China

Received 3 March 2015; Accepted 16 July 2015

Academic Editor: Anna Pandolfi

Copyright © 2015 Shiyong Zhang et al. 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.


RFID (radio frequency identification) is an emerging technology for automatic identification of physical objects using radio frequency. The security and privacy of the system is increasingly concerned and some light-weight encryption schemes such as Trivium and Bivium have been proposed. In this paper, the internal structure of Bivium is exploited and generalized to an algorithm called Bivium-Model. It is shown that the original Bivium has its inherent imperfections due to the improper parameter selection. A set of better parameters are given out to fix the security vulnerability of original Bivium. Emulation results also show that the Enhanced-Bivium algorithm achieves lower power consumption and lower die size.