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function varargout = TH02(varargin)% TH02 M-file for TH02.fig% TH02, by itself, creates a new TH02 or raises the existing% singleton*.%% H = TH02 returns the handle to a new TH02 or the handle to% the existing singleton*.%% TH02('CALLBACK',hObject,eventData,handles,...) calls the local% function named CALLBACK in TH02.M with the given input arguments.%% TH02('Property','Value',...) creates a new TH02 or raises the% existing singleton*. Starting from the left, property value pairs are% applied to the GUI before TH02_OpeningFcn gets called. An% unrecognized property name or invalid value makes property application% stop. All inputs are passed to TH02_OpeningFcn via varargin.%% *See GUI Options on GUIDE's Tools menu. Choose "GUI allows only one% instance to run (singleton)".%

% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help TH02

% Last Modified by GUIDE v2.5 24-Oct-2013 07:24:26

% Begin initialization code - DO NOT EDITgui_Singleton = 1;gui_State = struct('gui_Name', mfilename, ...

'gui_Singleton', gui_Singleton, ...'gui_OpeningFcn', @TH02_OpeningFcn, ...'gui_OutputFcn', @TH02_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{:});

elsegui_mainfcn(gui_State, varargin{:});

end% End initialization code - DO NOT EDIT

% --- Executes just before TH02 is made visible.function TH02_OpeningFcn(hObject, eventdata, handles, varargin)% This function has no output args, see OutputFcn.% hObject handle to figure% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)% varargin command line arguments to TH02 (see VARARGIN)

% Choose default command line output for TH02

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handles.output = hObject;

% Update handles structureguidata(hObject, handles);

% UIWAIT makes TH02 wait for user response (see UIRESUME)

% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.function varargout = TH02_OutputFcn(hObject, eventdata, handles)% varargout cell array for returning output args (see VARARGOUT);% hObject handle to figure% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)

% Get default command line output from handles structurevarargout{1} = handles.output;

function pathBox_Callback(hObject, eventdata, handles)% hObject handle to pathBox (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of pathBox as text% str2double(get(hObject,'String')) returns contents of pathBox as adouble

% --- Executes during object creation, after setting all properties.function pathBox_CreateFcn(hObject, eventdata, handles)% hObject handle to pathBox (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.% See ISPC and COMPUTER.if ispc && isequal(get(hObject,'BackgroundColor'),

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

end

% --- Executes on button press in Browse.function Browse_Callback(hObject, eventdata, handles)% hObject handle to Browse (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)[filename, pathname] = uigetfile('*.txt', 'Pick an txt-file');fullpathname= strcat(pathname,filename);whos fullpathname;disp(fullpathname);

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set(handles.pathBox,'String',fullpathname);

% --- Executes on button press in Text2Bin.function Text2Bin_Callback(hObject, eventdata, handles)% hObject handle to Text2Bin (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)InpText=get(handles.InputText, 'String');str= ConvertToBinary(InpText);set(handles.OutputText,'String', [InpText ': ' str]);disp(str);

% --- Executes on button press in pushbutton3.function pushbutton3_Callback(hObject, eventdata, handles)% hObject handle to pushbutton3 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)

function InputText_Callback(hObject, eventdata, handles)% hObject handle to InputText (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of InputText as text% str2double(get(hObject,'String')) returns contents of InputText as adouble

% --- Executes during object creation, after setting all properties.function InputText_CreateFcn(hObject, eventdata, handles)% hObject handle to InputText (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles empty - handles not created until after all CreateFcns called



end

function OutputText_Callback(hObject, eventdata, handles)% hObject handle to OutputText (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of OutputText as text% str2double(get(hObject,'String')) returns contents of OutputText% as a double

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% --- Executes during object creation, after setting all properties.function OutputText_CreateFcn(hObject, eventdata, handles)% hObject handle to OutputText (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles empty - handles not created until after all CreateFcns called



end

% --- Executes on button press in Nhung.function Nhung_Callback(hObject, eventdata, handles)% hObject handle to Nhung (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)InpText=get(handles.InputText, 'String');str= ConvertToBinary(InpText);

fname=get(handles.pathBox,'String');fstream= fileread(fname)

fout =get(handles.pathBox2,'String');EncodeStream=Nhung(fstream,str);

filewrite(fout,EncodeStream);msgbox('Encode Xong');

% --- Executes on button press in Browse2.function Browse2_Callback(hObject, eventdata, handles)% hObject handle to Browse2 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)[filename, pathname] = uiputfile('*.txt', 'Pick an txt-file');fullpathname= strcat(pathname,filename);whos fullpathname;disp(fullpathname);set(handles.pathBox2,'String',fullpathname);

function pathBox2_Callback(hObject, eventdata, handles)% hObject handle to pathBox2 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of pathBox2 as text% str2double(get(hObject,'String')) returns contents of pathBox2 as adouble

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% --- Executes during object creation, after setting all properties.function pathBox2_CreateFcn(hObject, eventdata, handles)% hObject handle to pathBox2 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles empty - handles not created until after all CreateFcns called



end

% --- Executes on button press in Decode.function Decode_Callback(hObject, eventdata, handles)% hObject handle to Decode (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)Mess=get(handles.InputText,'String');fname=get(handles.pathBox2,'String'); % chon file da encode trong pathBox2fstream= fileread(fname)Bin=RutTrich(fstream);Message=ConvertToText(Bin);set(handles.OutputText,'String',Message);msgbox('Encode Xong');

%set(handles.OutputText,'String',Mess);

% --- Executes on button press in pushbutton7.

function pushbutton7_Callback(hObject, eventdata, handles)% hObject handle to pushbutton7 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)

ConvertToBinary

function [ binStr ] = ConvertToBinary( str )

binStr = '';

for i = 1: length(str)

disp(dec2bin(str(i)));

binStr = strcat(binStr, dec2bin(str(i),8));

end

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end

ConvertToText

function [ str ] = ConvertToText( binStr )

str = '';

len = length(binStr);

len = len / 8;

for i = 1: len

t = '';

for j = (i-1)*8+1: i*8

t = strcat(t, binStr(j));

end

t = char(bin2dec(t));

if t == ' '

t = '-';

end

str = strcat(str, t);

end

for i = 1: length(str)

if str(i) == '-'

str(i) = ' ';

end

end

end

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Nhung

function [ embeded ] = Nhung( cover , secret )

embeded = 'e';

remain=cover;

k=1;

while true

[token1, remain] = strtok(remain, ' ')

[token2, remain] = strtok(remain, ' ')

if( strcmp(secret(k),'0'))

temp=[token1 ' ' token2 ' e']

embeded = [embeded(1:end-1), temp]

end

if( strcmp(secret(k),'1'))

temp = [token1 ' ' token2 ' e'] % matlab k cho php 1 string c blank sau ?t nn thm e vo, lt g? e

ra!

embeded = [embeded(1:end-1), temp] % dng strcat n b? kho?ng tr?ng sau embeded(1:end-1)

xong ghp temp c?ng nh? k

end

k= k + 1;

if(k>length(secret)) % nhng h?t n?i dung r?i!

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break;

end;

end; %ket thuc while

embeded=[embeded(1:end-1), remain]

end %function

filewrite

function filewrite(myfile, mytext)

fid = fopen(myfile,'w');

fprintf(fid, '%s', mytext);

fclose(fid);

RutTrich

function [secret] = RutTrich( embeded )

secret='';

a=0; % 3 khoang trang a b c

b=0;

i=1;

while true

ei=embeded(i);

ek=embeded(i+1);

if strcmp(ei,' ') && strcmp(ek,' ')

if (a==0) a=a+2; end;

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if (a==1) b=b+2; end ;

i=i+1;

end

if strcmp(ei,' ') && not(strcmp(ek,' '))

if(a==1) % vua doc 1 blank rieng truoc do roi, them nay nua la 2 blank ddown- ket thuc

break;

end;

if(a==0) a=a+1; end;

if(a==2) b=b+1; end;

end

if a+b==3;

if (a==1)

secret=[secret '0']

else

secret=[secret '1']

end;

a=0;

b=0;

end

i=i+1; % BREAK n?a

end

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end

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codeBT2