Algorithm 1 Procedure to retrieve the J3Gen feedback polynomials.

Given a sequence, s, of length S ≥; n+l

for i = 1 to (S − (n + l) + 1)

Take n + l bits of s: h = si…si+n+l−1

Set h2n = j with j = 0,1 and solve the linear equation systems.

If there exist a valid solution, then store it as a candidate.

end

Select the feedback polynomials among the candidates.