Perbandingan Teknik Steganografi Dengan Metode First-Of-File, End-Of-File Dan Kombinasi First-Of-File Dan End-Of-File Pada File Bitmap

(1)

LISTING PROGRAM

Kode Program Figure Menu :

function varargout = Menu(varargin) gui_Singleton = 1;

gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @Menu_OpeningFcn, ... 'gui_OutputFcn', @Menu_OutputFcn, ... 'gui_LayoutFcn', [] , ...

'gui_Callback', []); if nargin && ischar(varargin{1})

gui_State.gui_Callback = str2func(varargin{1}); end

if nargout

[varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:}); else

gui_mainfcn(gui_State, varargin{:}); end

function Menu_OpeningFcn(hObject, eventdata, handles, varargin) handles.output = hObject;

guidata(hObject, handles);

function varargout = Menu_OutputFcn(hObject, eventdata, handles) varargout{1} = handles.output;

% ---

function home_Callback(hObject, eventdata, handles)

% ---

function Embedd_Callback(hObject, eventdata, handles) EOFOF

% ---

function extract_Callback(hObject, eventdata, handles) Extract1

% ---

function file_Callback(hObject, eventdata, handles)

% ---

function help_Callback(hObject, eventdata, handles) Help

% ---

function exit_Callback(hObject, eventdata, handles) choice= questdlg ('Do you want to exit?','confirm',... 'Yes','No','No');

(2)

end

Kode Program Figure EOFOF (

Embedding):

function varargout = EOFOF(varargin) gui_Singleton = 1;

gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @EOFOF_OpeningFcn, ... 'gui_OutputFcn', @EOFOF_OutputFcn, ... 'gui_LayoutFcn', [] , ...

if nargout

function EOFOF_OpeningFcn(hObject, eventdata, handles, varargin) handles.output = hObject;

function varargout = EOFOF_OutputFcn(hObject, eventdata, handles) varargout{1} = handles.output;

function btnOpen_Callback(hObject, eventdata, handles)

[fileName, pathName] = uigetfile({'*.bmp', 'File bmp (*.bmp)'}, 'Open Bitmap File');

if isequal(fileName, 0) return;

else

info = imfinfo([pathName, fileName]); location = info.Filename;

filesize = info.FileSize / 1024;

handles.image = imread(fullfile(pathName, fileName)); guidata(hObject, handles);

axes(handles.cover); imshow(handles.image);

set(handles.fileName, 'string', fileName); set(handles.location, 'string', location); set(handles.size, 'string', filesize);

set(handles.heigth, 'string', size(handles.image, 1)); set(handles.width, 'string', size(handles.image, 2)); set(handles.btnOpentxt, 'visible', 'on');

set(handles.btnEmbedd, 'visible', 'on'); set(handles.btnReset, 'visible', 'on'); end;

function btnOpentxt_Callback(hObject, eventdata, handles)

[fileName, pathName] = uigetfile({'*.txt', 'File Text (*.txt)'}, 'Open Text File');

if isequal(fileName, 0) return;

else

urlname = ['file:///' fullfile(pathName, fileName)]; try

(3)

catch err

disp(err.message) end

set(handles.msg, 'string', str); end;

function btnEmbedd_Callback(hObject, eventdata, handles)

%EOF

tStart=tic;

m = get(handles.msg,'String'); m

m = double(m);

penanda1 = double('zx'); m = [penanda1 m 'zx']; [d e] = size(m);

awal = handles.image; cover = handles.image; cover = double(cover); awal = double(awal); [b k c] = size(cover); x = k;

status = 1; status2 = false; while (~status2) x = x + 1; for i = 1:1:k

cover(i,x,1) = m(status); status = status + 1; if (status > e) status2 = true; break;

end

end end

if status2 == true break;

end end

stego1 = uint8(cover); EOFtime = toc(tStart); guidata(hObject, handles); axes(handles.stego1); imshow(stego1);

% FOF

(4)

efof1(:,:,:) = 0; efof2(:,:,:) = 0; for i = 1:1:b

fof(i,1,1) = 0; efof(i,1,1) = 0; efof1(i,1,1) = 0; efof2(i,1,1) = 0; efof(i,1,2) = 0; efof1(i,1,2) = 0; efof2(i,1,2) = 0; efof(i,1,3) = 0; efof1(i,1,3) = 0; efof2(i,1,3) = 0; end

x = 0; status = 1; status2 = false; while (true) x = x + 1; for i = 1:1:k

fof(i,x,1) = m(status); status = status + 1; if (status > e) status2 = true; break;

end

end end

if status2 == true break;

end end

fof = [fof awal]; stego2 = uint8(fof); FOFtime = toc(tStart); axes(handles.stego2); imshow(stego2);

% EOFOF tStart=tic;

m = get(handles.msg, 'String'); m = double(m);

penanda1 = double('zzxx'); m = [penanda1 m 'zx']; [d e] = size(m);

(5)

while (~status2) x = x + 1; for i = 1:1:k

efof1(i,x,1) = m(status);

status = status + 1; if (status > e) status2 = true; break;

end

end end end

efof = [efof1 awal efof2]; stego3 = uint8(efof); EOFOFtime = toc(tStart); axes(handles.stego3); imshow(stego3);

pathName = 'D:\TA\';

file1 = 'EOF.bmp';

result1 = getimage(handles.stego1);

imwrite(result1, strcat(pathName, file1)); info = imfinfo([pathName, file1]);

(6)

location = info.Filename;

set(handles.TimeEOF, 'string', EOFtime);

set(handles.lEOF, 'string', size(handles.image, 1)); set(handles.wEOF, 'string', size(handles.image, 2)); set(handles.locationEOF, 'string', location);

set(handles.sizeEOF, 'string', filesize);

file2 = 'FOF.bmp';

handles.image = imread(fullfile(pathName, file2)); location = info.Filename;

set(handles.TimeFOF, 'string', FOFtime);

set(handles.lFOF, 'string', size(handles.image, 1)); set(handles.wFOF, 'string', size(handles.image, 2)); set(handles.locationFOF, 'string', location);

set(handles.sizeFOF, 'string', filesize);

file3 = 'EOFOF.bmp';

handles.image = imread(fullfile(pathName, file3)); location = info.Filename;

set(handles.TimeEOFOF, 'string', EOFOFtime);

set(handles.lEOFOF, 'string', size(handles.image, 1)); set(handles.wEOFOF, 'string', size(handles.image, 2)); set(handles.locationEOFOF, 'string', location);

set(handles.sizeEOFOF, 'string', filesize);

function btnReset_Callback(hObject, eventdata, handles) set(handles.msg, 'string', '');

set(handles.btnStatistik, 'Visible', 'off'); null(:,:,:) = 1;

stego1 = null;

axes(handles.stego1); imshow(stego1);

stego2 = null;

stego3 = null;

function msg_Callback(hObject, eventdata, handles)

function msg_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

set(hObject,'BackgroundColor','white'); end

(7)

function fileName_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'),

get(0,'defaultUicontrolBackgroundColor')) set(hObject,'BackgroundColor','white'); end

function size_Callback(hObject, eventdata, handles)

function size_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function heigth_Callback(hObject, eventdata, handles)

function heigth_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function width_Callback(hObject, eventdata, handles)

function width_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function location_Callback(hObject, eventdata, handles)

function location_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'),

function TimeEOFOF_Callback(hObject, eventdata, handles)

function TimeEOFOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'),

function sizeEOFOF_Callback(hObject, eventdata, handles)

function sizeEOFOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'),

function wEOFOF_Callback(hObject, eventdata, handles)

(8)

function lEOFOF_Callback(hObject, eventdata, handles)

function lEOFOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function locationEOFOF_Callback(hObject, eventdata, handles)

function locationEOFOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'),

function TimeFOF_Callback(hObject, eventdata, handles)

function TimeFOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function sizeFOF_Callback(hObject, eventdata, handles)

function sizeFOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function wFOF_Callback(hObject, eventdata, handles)

function wFOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function lFOF_Callback(hObject, eventdata, handles)

function lFOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function locationFOF_Callback(hObject, eventdata, handles)

function locationFOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'),

(9)

function TimeEOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function sizeEOF_Callback(hObject, eventdata, handles)

function sizeEOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function wEOF_Callback(hObject, eventdata, handles)

function wEOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function lEOF_Callback(hObject, eventdata, handles)

function lEOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function locationEOF_Callback(hObject, eventdata, handles)

function locationEOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'),

function btnStatistik_Callback(hObject, eventdata, handles) Statistic

% ---

function Home_Callback(hObject, eventdata, handles) Menu

% ---

function File_Callback(hObject, eventdata, handles)

% --- function Embedd_Callback(hObject, eventdata, handles)

EOFOF

% ---

(10)

% ---

function Help_Callback(hObject, eventdata, handles) Help

% ---

function Exit_Callback(hObject, eventdata, handles) choice= questdlg ('Do you want to exit?','confirm',... 'Yes','No','No');

switch choice case 'Yes' close all; end

% ---

function Close_Callback(hObject, eventdata, handles) close

Kode Program Figure Extract1:

function varargout = Extract1(varargin) gui_Singleton = 1;

gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ...

'gui_OpeningFcn', @Extract1_OpeningFcn, ... 'gui_OutputFcn', @Extract1_OutputFcn, ... 'gui_LayoutFcn', [] , ...

if nargout

function Extract1_OpeningFcn(hObject, eventdata, handles, varargin) handles.output = hObject;

function varargout = Extract1_OutputFcn(hObject, eventdata, handles) varargout{1} = handles.output;

function btnOpen1_Callback(hObject, eventdata, handles)

[fileName, pathName] = uigetfile({'*.bmp','File bmp (*.bmp)'},'Open Stego Image');

if ~isequal(fileName,0)

handles.image=imread(fullfile(pathName, fileName)); guidata(hObject,handles);

axes(handles.Stego1); imshow(handles.image);

set(handles.btnExtract1,'Visible','on'); else

return; end;

(11)

set(handles.btnExtract2,'Visible','on');

else

return; end;

set(handles.btnExtract3,'Visible','on'); else

return; end;

function btnExtract1_Callback(hObject, eventdata, handles) tStart=tic;

cover = handles.image; cover = double(cover) [b k c] = size(cover); penanda1=('zx');

penanda1=double(penanda1); penanda1;

x = k; kondisi=0; for i = 1:1:k

tanda=[cover(1,i,1) cover(1,i,2)]; tanda=double(tanda);

if tanda == penanda1 kondisi=1;

indeks=i break; end

end

if kondisi==1

for l=1:1:indeks-1 for t= 1:1:b

for rgb= 1:1:3

gambarku(t, l, rgb)= cover(t, l, rgb); end

end end;

gambarku= uint8(gambarku) pathName = 'D:\HASIL\'; file1 = 'EOF.bmp';

imwrite(gambarku, strcat(pathName, file1)); sss=1;

(12)

for i=indeks:1:k for j=1:1:b

teks=[teks char(cover(j,i,1))]; sss=sss+1;

end end

posisi=3;

a=length(teks); for i=3:a-1

posisi1=teks(i); posisi2=teks(i+1); if (posisi1=='z') if (posisi2=='x') b=3;

b=i; end end end; baru=[]; for i=3:b

tekss=teks(i); baru=[baru tekss]; end

baru;

tampung = [];

for i = 1 : (length(baru)-1)

if baru(i) == 'z' && baru(i+1) == 'x' break

end

tampung =[tampung baru(i)]; end

tampung;

msgbox({'There is hidden message.'}','Message','modal'); EOFtime = toc(tStart);

set(handles.TimeEOF, 'String', EOFtime); set(handles.edEOF,'String',tampung); else

set(handles.TimeEOF, 'String', ''); set(handles.edEOF,'String','');

msgbox({'There is no hidden message. Please select another image.'},'Message','modal');

end;

cover = handles.image; cover = double(cover) [b k c] = size(cover);

penanda1=('zx');

(13)

for i = 1:1:k

indeks=i break; end

end

pos=1;

[b k c] = size(cover); if kondisi==1

for l=indeks+2:1:k for t= 1:1:b

for rgb= 1:1:3

gambarku(t, pos, rgb)= cover(t, l, rgb); end

end

pos=pos+1; end;

gambarku= uint8(gambarku); pathName = 'D:\HASIL\'; file1 = 'FOF.bmp';

imwrite(gambarku, strcat(pathName, file1));

sss=1; teks=[];

for i=indeks:1:k for j=1:1:b

end end

posisi=3;

b=i;

end end end; baru=[]; for i=3:b

tekss=teks(i); baru=[baru tekss]; end

(14)

tampung = [];

end

tampung;

msgbox({'There is hidden message.'}','Message','modal'); FOFtime = toc(tStart);

set(handles.TimeFOF, 'String', FOFtime); set(handles.edFOF,'String',tampung); else

set(handles.TimeFOF, 'String', ''); set(handles.edFOF,'String','');

end;

cover = handles.image; cover = double(cover) [b k c] = size(cover);

penanda1=('zx');

x = k; kondisi=0;

tanda=[cover(1,1,1) cover(1,1,2)] tanda=double(tanda);

indeks=0;

handles.teks1=[];

guidata(hObject,handles); sss=1;

if tanda == penanda1

for i = 2:1:k

teks=[]; indekss=i p1=i-1; p2=k-p1+1; break; end

end

indeks=indekss; if(indekss>0)

for i=1:1:(indekss-2) for j=1:1:b

(15)

teks=[teks char(cover(j,indeks,2))]; teks=[teks char(cover(j,i,3))]; teks=[teks char(cover(j,indeks,3))]; end

break end

end

posisi=3;

b=i; end

end end; baru=[]; for i=5:b

tekss=teks(i); baru=[baru tekss] end

baru;

tampung = [];

end

tampung;

pos=1;

[b k c] = size(cover); for l=p2:p1

for t= 1:1:b

for rgb= 1:1:3

gambarku(t, pos, rgb)= cover(t, l, rgb); end

end

pos=pos+1; end;

gambarku= uint8(gambarku) pathName = 'D:\HASIL\'; file1 = 'EOFOF.bmp';

imwrite(gambarku, strcat(pathName, file1));

msgbox({'There is hidden message.'},'Message','modal'); EOFOFtime = toc(tStart);

set(handles.TimeEOFOF, 'String', EOFOFtime); set(handles.edEOFOF,'String',tampung);

else

(16)

set(handles.edEOFOF,'String','');

end;

function edEOFOF_Callback(hObject, eventdata, handles)

function edEOFOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function edit2_Callback(hObject, eventdata, handles)

function edit2_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function edFOF_Callback(hObject, eventdata, handles)

function edFOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function edEOF_Callback(hObject, eventdata, handles)

function edEOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

% ---

function Menu_Callback(hObject, eventdata, handles) Menu

% ---

(17)

% ---

function Extract_Callback(hObject, eventdata, handles) Extract1

% ---

function MSE_Callback(hObject, eventdata, handles) Statistic

% ---

function TimeEOF_Callback(hObject, eventdata, handles)

function TimeEOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function TimeFOF_Callback(hObject, eventdata, handles)

function TimeFOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

function TimeEOFOF_Callback(hObject, eventdata, handles)

function TimeEOFOF_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'),

% ---

% --- Executes on button press in reset.

function reset_Callback(hObject, eventdata, handles) set(handles.edEOF, 'string', '');

(18)

set(handles.TimeEOF, 'string', ''); set(handles.TimeFOF, 'string', ''); set(handles.TimeEOFOF, 'string', '');

Kode Program Figure Statistic:

function varargout = Statistic(varargin) gui_Singleton = 1;

gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ...

'gui_OpeningFcn', @Statistic_OpeningFcn, ... 'gui_OutputFcn', @Statistic_OutputFcn, ... 'gui_LayoutFcn', [] , ...

if nargout

function Statistic_OpeningFcn(hObject, eventdata, handles, varargin) handles.output = hObject;

function varargout = Statistic_OutputFcn(hObject, eventdata, handles) varargout{1} = handles.output;

[fileName, pathName] = uigetfile({'*.bmp','File bmp (*.bmp)'},'Open Image');

axes(handles.Stego1); imshow(handles.image); else

return; end;

(19)

return; end;

function Mse3_Callback(hObject, eventdata, handles)

function Mse3_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

% ---

function Menu_Callback(hObject, eventdata, handles) Menu

% ---

(20)

% ---

function Extract_Callback(hObject, eventdata, handles) Extract1

% ---

function MSE_Callback(hObject, eventdata, handles) Statistic

% ---

function btnMse_Callback(hObject, eventdata, handles)

Stego1 = getimage(handles.Stego1); StegoA = double(Stego1);

[b1 k1 c]= size (StegoA);

Stego2 = getimage(handles.Stego2); StegoB = double(Stego2);

[b2 k2 c]= size (StegoB);

Stego3 = getimage(handles.Stego3); StegoC = double(Stego3);

[b3 k3 c]= size (StegoC);

Stego4 = getimage(handles.Stego4); StegoD = double(Stego4);

[b4 k4 c]= size (StegoD);

C1= StegoA; C1(1,1,1)

if(b1==b2 && k1==k2) C2= StegoB;

dC= double(C1) - double(C2); mse= (dC(:).^2);

p= length(mse);

mse1= (sum(mse(1:p))/p);

set(handles.Mse1,'String',mse1); else

msgbox({'Image 1 ~= Image 2'}','Message','modal'); end

if(b1==b3 && k1==k3) C3= StegoC;

(21)

p= length(mse);

if(b1==b4 && k1==k4) C4= StegoD;

dC= double(C1) - double(C4); mse= (dC(:).^2);

p= length(mse);

% ---

% --- Executes on button press in reset.

function reset_Callback(hObject, eventdata, handles) set(handles.Mse1, 'string', '');

set(handles.Mse2, 'string', ''); set(handles.Mse3, 'string', '');

Kode Program Figure Help:

function varargout = Help(varargin) gui_Singleton = 1;

gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @Help_OpeningFcn, ... 'gui_OutputFcn', @Help_OutputFcn, ... 'gui_LayoutFcn', [] , ...

if nargout

function Help_OpeningFcn(hObject, eventdata, handles, varargin) handles.output = hObject;

(22)

function edit2_Callback(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))

% ---

function home_Callback(hObject, eventdata, handles) Menu

% ---

function file_Callback(hObject, eventdata, handles)

% ---

function Embedd_Callback(hObject, eventdata, handles) EOFOF

% ---

function extract_Callback(hObject, eventdata, handles) Extract1

% ---

function close_Callback(hObject, eventdata, handles) close

(23)

function help_Callback(hObject, eventdata, handles) Help

% ---

function exit_Callback(hObject, eventdata, handles) choice= questdlg ('Do you want to exit?','confirm',... 'Yes','No','No');

(24)

CURRICULUM VITAE

Nama

: Arfiyah

Tempat / Tanggal Lahir

: Medan / 15 Februari 1991

Alamat

: Gang.Pringgan Lor.Camar Marelan

Agama

: Islam

Jenis Kelamin

: Perempuan

Alamat Email

No. Hp

: 081376502332

PENDIDIKAN FORMAL

2009-2013

S1 Ilmu Komputer Fasilkom-TI USU, Medan.

2006-2009

SMA Negeri 3 Medan

2003-2006

SMP Hang-Tuah I Belawan

1997-2003

SD Hang-Tuah III Belawan

SEMINAR, KURSUS

2013

Peserta Seminar Nasional dengan Tema “Pencaplokan

Budaya” Universitas Sumatera Utara

2012

Peserta Kursus Bahasa Inggris

2011

Peserta Seminar Teknologi Informasi “The

Development of Modern Operating System Technology:

Android – The new Trend in Modern Operating Sytem”

Universitas Sumatera Utara

2010

Peserta Seminar Internasional Matematika dan Terapan

Universitas Sumatera Utara

2008

Peserta Kursus Komputer

KEAHLIAN

Bahasa

Indonesia, Inggris

Bahasa Pemrograman

Matlab, C++, C#.Net, Delphi, PHP, MySQL.

PENGALAMAN ORGANISASI

2011

Anggota

IMILKOM (Ikatan Mahasiswa Ilmu

Komputer) USU Medan

2009

Anggota BKM AL-KHAWARIZMI S1 Ilmu Komputer

USU Medan