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Paper 2013/185

Security Analysis of Linearly Filtered NLFSRs

Mohammad Ali Orumiehchiha and Josef Pieprzyk and Ron Steinfeld and Harry Bartlett

Abstract

Our contributions are applying distinguishing attack on Linearly Filtered NLFSR as a primitive or associated with filter generators. We extend the attack on linear combinations of Linearly Filtered NLFSRs as well. Generally, these structures can be examined by the proposed techniques and the criteria will be achieved to design secure primitive. The attacks allow attacker to mount linear attack to distinguish the output of the cipher and recover its internal state. Also, we investigate security of the modified version of Grain stream cipher to present how invulnerable is the scheme against distinguishing attacks.

Metadata
Available format(s)
PDF
Category
Secret-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
Non-linear feedback shift registerLinearly Filtered NLFSRCryptanalysisKey Recovery AttackDistinguishing Attack.
Contact author(s)
orumiehchi @ gmail com
History
2013-04-02: received
Short URL
https://ia.cr/2013/185
License
Creative Commons Attribution
CC BY
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