On the decomposition of an NFSR into the cascade connection of an NFSR into an LFSR
نویسندگان
چکیده
منابع مشابه
On Decomposition of an NFSR into a Cascade Connection of Two Smaller
Nonlinear feedback shift registers (NFSRs) are an important type of sequence generators used for building stream ciphers. The shift register used in Grain, one of eSTREAM finalists, is a cascade connection of two NFSRs, which is also known as nonlinear product-feedback shift registers proposed in 1970. This paper provides a series of algorithms to decompose a given NFSR into a cascade connectio...
متن کاملA Survey and New Results on the Decomposition of an NFSR into a Cascade Connection of Two Smaller NFSRs∗
Nonlinear feedback shift registers (NFSRs) are an important building block for stream ciphers. Given a cascade connection of two NFSRs, say NFSR(f, g), it has been known for decades how to solve the characteristic function of the NFSR which is equivalent to NFSR(f, g). However, the converse problem of decomposing an NFSR into a cascade connection of two smaller NFSRs is not completely solved, a...
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ژورنال
عنوان ژورنال: Journal of Complexity
سال: 2013
ISSN: 0885-064X
DOI: 10.1016/j.jco.2012.09.003