galois.GLFSR.taps

property galois.GLFSR.taps : FieldArray

The shift register taps \(T = [c_0, c_1, \dots, c_{n-2}, c_{n-1}]\). The taps of the shift register define the linear recurrence relation.

Examples¶

In [1]: c = galois.primitive_poly(7, 4); c
Out[1]: Poly(x^4 + x^2 + 3x + 5, GF(7))

In [2]: taps = -c.coeffs[1:][::-1]; taps
Out[2]: GF([2, 4, 6, 0], order=7)

In [3]: lfsr = galois.GLFSR.Taps(taps); lfsr
Out[3]: <Galois LFSR: f(x) = 5x^4 + 3x^3 + x^2 + 1 over GF(7)>

In [4]: lfsr.taps
Out[4]: GF([2, 4, 6, 0], order=7)