Binary [56,6,28] Goppa code

Goppa polynomial: G(z)=z17+z14+z13+z12+z11+z8+z6+z5+z4+z3+z+1
L=GF(26) - {0}
The field GF(26) is constructed using the primitive polynomial p(x)=x6+x+1, p(α)=0;