Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. 2021.Īll rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. In this paper, we discuss about the post-processing method based on a nonlinear feedback shift register for generating Markov binary sequences from aperiodic binary random numbers obtained from physical random numbers or an analog chaos circuit.īinary random sequence / Markov source / nonlinear shift register / post-processing / chaos theory / / / However, it is known that correlated random numbers are useful in Monte-Carlo methods.
In general, random numbers are required to be uniform and uncorrelated. Markov Binary Sequences Generated by Post-Processing Based on Nonlinear Feedback Shift RegistersĪkio Tsuneda ( Kumamoto Univ.), Naruaki Maeda ( NEC) NLP2021-59 It is a novelty to propose coding solutions by means of Reverse Polish Notation, thanks to which the simple mechanism of a stack with automation, realizing a context-free grammar of. All of the register elements share a common clock input, which is omitted from the symbol for reasons of clarity. They are generally classified into Fibonacci NFSRs and Galois NFSRs. The selection of the register feedback structure to achieve the maximum cycle is a difficult task, especially for the register with a non-linear feedback function. The taps in this example are at bit 0 and bit 2, and can be referenced as 0,2. IEICE Technical Committee Submission System Nonlinear feedback shift registers (NFSRs) have been used in many recent stream ciphers. In a LFSR several cells of the shift register are sampled and fed as inputs into the XOR network to generate the next input to the input cell of the register. Lecture notes in computer science, vol 2523.Ken-system: Markov Binary Sequences Generated by Post-Processing Based on Nonlinear Feedback Shift Registers Cryptographic Hardware and Embedded Systems – CHES 2002. Klimov A, Shamir A (2003) A new class of invertible mappings. Lecture notes in computer science, vol 4859. Sekar G, Paul S, Preneel B (2007) Related-key attacks on the Py-family of ciphers and an approach to repair the weaknesses.
SASC: the State of the Art of Stream Ciphers, NoE ECRYPT Workshop Technical Report, University of Waterloo, CORR 2000–20įiliol E, Fontaine C, Josse S (2004) The COSvd ciphers. Youssef AM, Gong G (2000) On the quadratic span of binary sequences. Lecture notes in computer science, vol 435. Jansen CJA, Boekee DE (1990) The shortest feedback shift register that can generate a given sequence. Jansen CJA (1989) Investigations on nonlinear stream cipher systems: construction and evaluation methods. Golomb SW (1982) Shift register sequences, revised edition.
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