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Title:
Application of LFSRs for Parallel Sequence Generation in Cryptologic Algorithms
Authors: Sourav Mukhopadhyay, Palash Sarkar
Abstract:We consider the problem of efficiently generating sequences in hardware for use in certain cryptographic algorithms. The conventional method of doing this is to use a counter. We show that sequences generated by linear feedback shift registers (LFSRs) can be tailored to suit the appropriate algorithms. For hardware implementation, this reduces both time and chip area. As a result, we are able to suggest improvements to
the design of DES Cracker built by the Electronic Frontier Foundation in 1998; provide an efficient strategy for generating start points in time-memory trade/off attacks; and present an improved parallel hardware implementation of a variant of the counter mode of operation of a block cipher.
ePrint: https://eprint.iacr.org/2006/042
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