matlab程序-信息安全密码学BM算法

clc;
clear
a=[001110];
syms x;
fx=[];%多项式
fx（1）=1;
lc=[];%L
constantpoly=[1];
lc（1）=0;
sequenlength=length（a）;  % 序列长度
minpolycoefficient=[1];
minpolylen=length（minpolycoefficient）;
minpolydegree=minpolylen-1;
d=[];
count1=0;
count2=0;
for n=0:sequenlength-1
    dtemp=0;
    for j=0:minpolydegree
        dtemp=mod（dtemp+minpolycoefficient（j+1）*a（n+1-minpolydegree+j）2）;
    end
    d=[d dtemp];
    if d（n+1）==0
        fxtemp=fx（n+1）;
        lctemp=lc（n+1）;
    else
        for i=0:n
            if lc（i+1）==0
                count1=count1+1;
            else
                count1=count1;
            end
        end
        keyscript=[0];
        if count1==n+1
            fxtemp=1+x^（n+1）;
            lctemp=n+1;
            keyscript=[keyscript n];
        else
            for k=0:（n-1）
                if lc（k+1）==lc（k+2）
                    keyscript=keyscript;
                else
                    keyscript=[keyscript k];
                end
            end
            keyscript=[keyscript n];
            keyscriptlength=length（keyscript）;
            ntemp=keyscript（keyscriptlength）;
            mtemp=keyscript（keyscriptlength-1）;
            if mtemp==0
                fxtemp=fx（ntemp+1）+x^ntemp;
            else
                fxmcoefficient=sym2poly（fx（mtemp+1））;
                fxmlen=length（fxmcoefficient）;
                xnmcoefficient=sym2poly（x^（ntemp-mtemp））;