CODEWITHSUNDEEP
matlabloadsaveprotectedencryption
Eghbal
Eghbal

Reputation: 3783

Store data as an encrypted MATLAB .mat file

Is anyway to save a .mat file (contains database) as encrypted file. I want only my program (GUI) read these .mat files, not other users by directly opening files in MATLAB.

This link may halp but I'm not familiar with this page definitions. Can you describe it with more details? : Serialize/Deserialize

Thanks.

Upvotes: 3

Views: 3095

Answers (2)

jmp111
jmp111

Reputation: 71

Not that I have heard of, however there may be a way to protect it in a different way:

Due to lack of MWE, I came up with an example: I am assuming you know which variables you want to save. I have assumed here that variables A and B are to be saved. A is a double, B is a logical (different sizes). (cells need to be saved differently (cell by cell), let alone structs...!)

A=[1,2,3,4;5,6,7,8]; % your data (double) in your GUI
B=[0,1,1,0,1]==1; % your data (logical) in your GUI
pw='user2991243'; % make up a 'password' as variable in the GUI
% call this from your GUI function
function CreateHiddenData(A,B)
    fid=fopen('hiddendata.m','w');
    fprintf(fid, '%s\n', 'if strcmp(''user2991243'',pw)');
    % for a double
    str='A=[';
    for k=1:size(A,1)
        str=[str num2str(A(k,:)) ';'];
    end
    str=[str '];'];
    fprintf(fid, '%s\n', str);
    % for a logical
    str='B=[';
    for k=1:size(B,1)
        str=[str num2str(B(k,:)) ';'];
    end
    str=[str ']==1;'];
    fprintf(fid, '%s\n', str);
    fprintf(fid, '%s\n', 'end');
    fclose(fid);
    pcode hiddendata
    delete('hiddendata.m')
end

For your program, you can directly call the .p file, it will loads the variable(s) into the workspace. (Although this will overwrite all variables with the same name)

Upvotes: 3

user1980812
user1980812

Reputation: 81

You should look at the function pcode. Maybe it could help you.

Upvotes: 0

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