Cryptology ePrint Archive: Report 2015/855

A new framework for keystream generators against Correlation, Linear and Distinguishing Attacks

GANESH YELLAPU

Abstract: Designing a keystream generator which utilizes Linear Feedback Shift Registers (LFSRs) against correlation, linear attacks is a highly challenging task. In this paper, a new framework for keystream gen- erators is proposed. It is comprised of a set of Linear Feedback Shift Registers (LFSRs), a Multiplicative Congruential Generator (MCG), a vector linear function and, a Boolean function which outputs the keystream. The framework is more generally discussed against corre- lation attacks, linear attacks and distinguishing (linear) attacks. It is shown that such attacks which are applicable to LFSR based keystream generators are not possible on the proposed framework.

Category / Keywords: Stream ciphers

Date: received 4 Sep 2015, last revised 7 Sep 2015, withdrawn 7 Oct 2015

Contact author: ganeshyellapu at bel co in

Available format(s): (-- withdrawn --)

Version: 20151007:063255 (All versions of this report)

Short URL: ia.cr/2015/855

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