2.18 Consider the following linear recurrence over Z₂ of degree four: Zi+4 = (Zi+Zi+1 + Zi+2 +Zi+3) mod 2, i > 0. For each of the 16 possible initialization vectors (zo, Z1, Z2, Z3) € (Z₂)¹, determine the period of the resulting keystream.
2.18 Consider the following linear recurrence over Z₂ of degree four: Zi+4 = (Zi+Zi+1 + Zi+2 +Zi+3) mod 2, i > 0. For each of the 16 possible initialization vectors (zo, Z1, Z2, Z3) € (Z₂)¹, determine the period of the resulting keystream.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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ONLY do for the following initialization

Transcribed Image Text:2.18 Consider the following linear recurrence over Z2 of degree four:
Zi+4 = (Zi+Zi+1 + Zi+2+Zi+3) mod 2,
i > 0. For each of the 16 possible initialization vectors (zo, Z1, Z2, Z3) € (Z₂) 4,
determine the period of the resulting keystream.
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