Multiple Dimensional Fault Tolerant Schemes for Crypto Stream Ciphers
Chang N. Zhang, Qian Yu and Xiao Wei Liu
Dept of Computer Science, University of Regina, Regina, SK, S4S 0A2, Canada
ABSTRACT
To enhance the security and reliability of the widely-used stream ciphers, a 2-D and a 3-D mesh-knight Algorithm Based Fault Tolerant (ABFT) schemes for stream ciphers are developed which can be universally applied to RC4 and other stream ciphers. Based on the ready-made arithmetic unit in stream ciphers, the proposed 2-D ABFT scheme is able to detect and correct any simple error, and the 3-D meshknight ABFT scheme is capable of detecting and correcting up to three errors in an n2 -data matrix with liner computation and bandwidth overhead. The proposed schemes provide one-to-one mapping between data index and check sum group so that error can be located and recovered by easier logic and simple operations.
KEYWORDS
Crypto Stream Ciphers, RC4, Fault Tolerant, Error Detection
Original Source Link : http://airccse.org/journal/nsa/0710ijnsa03.pdf
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