hello , i need a coding?

조회 수: 1 (최근 30일)
priya
priya 2014년 11월 9일
hello
i am coding for hash512 algorithm. i have coded up to padding operations and i need to perform round functions can some one help me by providing the code to me. or can you please correct my code and resend to me. I need the output as a 512bits binary string converted to decimal data. i am attaching my code below.
data = input('enter the data:','s');
pawrd = input('enter the password:','s');
bin = double(data);
display(bin);
n = dec2base(bin,16);
display(n);
len_n = length(n);
display(len_n);
k = dec2bin(bin,8);
display(k);
pwd = dec2bin(pawrd,8)';
pwd = pwd(:)'-'0';
ln_pwd = length(pwd);
disp(ln_pwd);
pad_pwd = [pwd , ones(1,64-ln_pwd)];
A = dec2bin(data,8)';
A = A(:)'-'0';
le_a = length(A);
pad2 = dec2bin(le_a,8)';
pad2 = pad2(:)'-'0';
j = length(pad2);
dap2 = [zeros(1,128-j), pad2];
display(pad2);
display(A);
display(le_a);
x = 896-le_a;
display(x);
%%padding operation
if x == 0
display('seq need not to be padded');
else
padarray = [ones(1,1), zeros(1,x-1)];
paddedseq = [A, padarray];
finalpad = [paddedseq, dap2];
l_paddedseq = length(finalpad);
display(l_paddedseq);
display(paddedseq);
display(finalpad);
%%round function
x1 = '6A09E667F3BCC908';
x2 = 'BB67AE8584CAA73B';
x3 = '3C6EF372FE94F82B';
x4 = 'A54FF53A5F1D36F1';
x5 = '510E527FADE682D1';
x6 = '9B05688C2B3E6C1F';
x7 = '1F83D9ABFB41BD6B';
x8 = '5BE0CD19137E2179';
bx1 = base2dec(x1,16);
bx2 = base2dec(x2,16);
bx3 = base2dec(x3,16);
bx4 = base2dec(x4,16);
bx5 = base2dec(x5,16);
bx6 = base2dec(x6,16);
bx7 = base2dec(x7,16);
bx8 = base2dec(x8,16);
a = dec2bin(bx1,64);
display(a);
b = dec2bin(bx2,64);
display(b);
c = dec2bin(bx3,64);
display(c);
d = dec2bin(bx4,64);
display(d);
e = dec2bin(bx5,64);
display(e);
f = dec2bin(bx6,64);
display(f);
g = dec2bin(bx7,64);
display(g);
h = dec2bin(bx8,64);
display(h);
end w =reshape(finalpad,16,64); display(w);
wi = w(0+i, 1:64);
disp(wi);
ki = circshift(pad_pwd,1);
disp(ki);
and1 = e&f;
and2 = (~e)&g;
and3 = a&b;
and4 = a&c;
and5 = b&c;
Ch = bitxor(and1,and2);
display(and1);
display(and2);
display(Ch);
Maj1 = bitxor(and3,and4);
display(Maj1);
maj = bitxor(Maj1,and5);
display(maj);
r1 = circshift(e,[0 +14])-'0' ;
disp(r1);
r2 = circshift(e,[0 +18])-'0';
disp(r2);
r3 = circshift(e,[0 +41])-'0';
r4 = circshift(a,[0 +28])-'0';
r5 = circshift(a,[0 +34])-'0';
r6 = circshift(a,[0 +39])-'0';
r12 = bitxor(r1,r2);
r45 = bitxor(r4,r5);
sum1e = bitxor(r12,r3);
sum0a = bitxor(r45,r6);
T1 = h|Ch|wi|ki|sum1e;
disp(T1);
T2 = maj|sum0a;
disp(T2);
h = g;
disp(h);
g = f;
disp(g);
f = e;
disp(f);
e = d|T1;
disp(e);
d = c;
disp(d);
c = b;
disp(c);
b = a;
disp(b);
a = T1|T2;
disp(a);
a=a(a~='0');
disp(a);

답변 (0개)

카테고리

Help CenterFile Exchange에서 Symbolic Math Toolbox에 대해 자세히 알아보기

태그

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by