Unified Formal Model for Synchronous and Self-Synchronizing Stream Ciphers
نویسندگان
چکیده
منابع مشابه
Non-Linearity and Security of Self Synchronizing Stream Ciphers
Several proposed chaos based ciphers exploit the ergodic property of chaotic orbits. As chaotic systems are unstable and have sensitive dependence on initial conditions, the main difficulty for the receiver is to reproduce the chaotic signal that has been generated by the sender in order to correctly decrypt the message. This is performed by a self synchronizing device. In discrete cryptography...
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In cryptology we commonly face the problem of finding an unknown key K from the output of an easily computable keyed function F (C,K) where the attacker has the power to choose the public variable C. In this work we focus on self-synchronizing stream ciphers. First we show how to model these primitives in the above-mentioned general problem by relating appropriate functions F to the underlying ...
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In this paper, we present properties of dynamical systems and their use for cryptographical applications. In particular, we study the relationship with the self-synchronizing stream ciphers from a structural point of view. A special class of dynamical systems, namely the piecewise linear systems, are then considered. I. I The main objective of the paper is to show how dynamical syste...
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In this document we specify and motivate the hardware-oriented self-synchronizing stream cipher Mosquito and the underlying cipher architecture and provide hardware implementation results. This stream cipher is a close variant of the cipher ΥΓ, described in [2]. ΥΓ in its turn was a corrected version of the cipher KNOT published in [1], removing the weaknesses that have lead to its breaking in ...
متن کاملThe Filter-Combiner Model for Memoryless Synchronous Stream Ciphers
We introduce a new model – the Filter-Combiner model – for memoryless synchronous stream ciphers. The new model combines the best features of the classical models for memoryless synchronous stream ciphers – the Nonlinear-Combiner model and the Nonlinear-Filter model. In particular, we show that the Filter-Combiner model provides key length optimal resistance to correlation attacks and eliminate...
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ژورنال
عنوان ژورنال: Procedia Engineering
سال: 2017
ISSN: 1877-7058
DOI: 10.1016/j.proeng.2017.02.442