[HELP] En(De)cryption

[nikitafloy]

Hello.

I am interested in a way to prevent theft of models (cars, skins) from the server. With what is this possible? What commands? Are there any examples? (In recent years, learned about teaEncode / Decode)

Sorry for the translation. Thank you.

[xXMADEXx]

You could use teaEncode/teaDecode, but it would be better to come up with your own algorithm for this, because it would a heavy use for the client to have to encode/decode a txd of dff string every time, because they're rather large strings.

You should write something this to the dff and txd files:

fdsjak actualTxdDffContents dfkadsl 

and then use string.sub to get the actual contents of the file

Example functions:

function hideRealContents ( str ) 
    return "dfdaskf"..str.."fkjdsak"; 
end  
  
function getRealContents ( str ) 
    return string.sub ( str, 7, string.len ( str ) - 7 ); 
end 

[Mr.unpredictable.]

I am working on a project like this.

an application which can encript your models t and you can set password to decrypt it.

but i'm facing a lot of problem while doing that.

If i finish it, I'll release it.

[nikitafloy]

You could use teaEncode/teaDecode, but it would be better to come up with your own algorithm for this, because it would a heavy use for the client to have to encode/decode a txd of dff string every time, because they're rather large strings.

You should write something this to the dff and txd files:

fdsjak actualTxdDffContents dfkadsl 

and then use string.sub to get the actual contents of the file

Example functions:

function hideRealContents ( str ) 
    return "dfdaskf"..str.."fkjdsak"; 
end  
  
function getRealContents ( str ) 
    return string.sub ( str, 7, string.len ( str ) - 7 ); 
end 

Do u mean it?

  
function getRealContents ( str ) 
    return string.sub ( str, 7, string.len ( str ) - 7 ) 
end 
  
local str = "dfdask" .. "data/elegy.txd" .. "fkjdsak" 
local str1 = "dfdask" .. "data/elegy.dff" .. "fkjdsak" 
  
function replaceModel()                   
    txd = engineLoadTXD(getRealContents(str), 562 ) 
    engineImportTXD(txd, 562) 
    dff = engineLoadDFF(getRealContents(str1), 562 ) 
    engineReplaceModel(dff, 562) 
end 
addEventHandler ( "onClientResourceStart", getResourceRootElement(getThisResource()), replaceModel) 

[nikitafloy]

up

[nikitafloy]

actual.

[Atton]

There is no pain free way to make this kind of thing work. But if you are going to use tea then try striping away the base64 layer on the file.

[Dealman]

Do u mean it?

No, he means to edit the .txd of .dff file itself. With a program such as N++ or whatnot.

[ALw7sH]

You should create your own encryption system

if someone here give you an idea

everyone gonna now how did you encrypt them and they'll know how to decrypt them

[Atton]

You should create your own encryption system

if someone here give you an idea

everyone gonna now how did you encrypt them and they'll know how to decrypt them

You might be able to use xor to make it harder for noobs to mess with files.

[WhoAmI]

What about getting content of .txd and .dff file server-side, and while player connects trigger it to clientside and load them as 'raw_data'?

engineLoadTXD 
engineLoadDFF 

[WhoAmI]

I've made something

server

Files = { 
    -- id model, txd path, dff path 
    { 0, "test.txd", "test.dff" } 
}; 
  
Content = { }; 
  
addEventHandler ( "onResourceStart", resourceRoot, 
    function ( ) 
        for _, v in pairs ( Files ) do 
            local id, txd, dff = unpack ( v ); 
            Content [ id ] = { }; 
             
            -- getting content of TXD 
            local txdFile = File ( txd, true ); 
            if txdFile then 
                local content = txdFile:read ( txdFile:getSize ( ) ); 
                Content [ id ] [ "txd" ] = content; 
            end 
             
            -- getting content of DFF 
            local dffFile = File ( dff, true ); 
            if dffFile then 
                local content = dffFile:read ( dffFile:getSize ( ) ); 
                Content [ id ] [ "dff" ] = content; 
            end 
        end 
    end 
); 
  
addEvent ( "server:getContent", true ) 
addEventHandler ( "server:getContent", root, 
    function ( ) 
        triggerClientEvent ( source, "client:applyContent", source, Content ); 
    end 
); 

client

addEventHandler ( "onClientResourceStart", resourceRoot, 
    function ( ) 
        triggerServerEvent ( "server:getContent", localPlayer ); 
    end 
); 
  
addEvent ( "client:applyContent", true ); 
addEventHandler ( "client:applyContent", root, 
    function ( Content ) 
        for model, c in pairs ( Content ) do 
            local txd, dff = c["txd"], c["dff"]; 
             
            local loadedTXD = EngineTXD ( txd ); 
            local loadedDFF = EngineDFF ( dff ); 
            if loadedTXD and loadedDFF then 
                loadedTXD:import ( model ); 
                loadedDFF:replace ( model ); 
            end 
        end 
    end 
); 

I really don't know if it will work, but you can try. To make it work you have to turn on OOP in meta.

Edited May 16, 2015 by Guest

[ALw7sH]

addEvent ( "server:getContent", true ) 
addEventHandler ( "server:getContent", root, 
    function ( ) 
        triggerClientServer ( source, "client:applyContent", source, Content ); 
    end 
); 

triggerClientServer

[nikitafloy]

I've made something

server

Files = { 
    -- id model, txd path, dff path 
    { 0, "test.txd", "test.dff" } 
}; 
  
Content = { }; 
  
addEventHandler ( "onResourceStart", resourceRoot, 
    function ( ) 
        for _, v in pairs ( Files ) do 
            local id, txd, dff = unpack ( v ); 
            Content [ id ] = { }; 
             
            -- getting content of TXD 
            local txdFile = File ( txd, true ); 
            if txdFile then 
                local content = txdFile:read ( txdFile:getSize ( ) ); 
                Content [ id ] [ "txd" ] = content; 
            end 
             
            -- getting content of DFF 
            local dffFile = File ( dff, true ); 
            if dffFile then 
                local content = dffFile:read ( dffFile:getSize ( ) ); 
                Content [ id ] [ "dff" ] = content; 
            end 
        end 
    end 
); 
  
addEvent ( "server:getContent", true ) 
addEventHandler ( "server:getContent", root, 
    function ( ) 
        triggerClientEvent ( source, "client:applyContent", source, Content ); 
    end 
); 

client

addEventHandler ( "onClientResourceStart", resourceRoot, 
    function ( ) 
        triggerServerEvent ( "server:getContent", localPlayer ); 
    end 
); 
  
addEvent ( "client:applyContent", true ); 
addEventHandler ( "client:applyContent", root, 
    function ( Content ) 
        for model, c in pairs ( Content ) do 
            local txd, dff = c["txd"], c["dff"]; 
             
            local loadedTXD = EngineTXD ( txd ); 
            local loadedDFF = EngineDFF ( dff ); 
            if loadedTXD and loadedDFF then 
                loadedTXD:import ( model ); 
                loadedDFF:replace ( model ); 
            end 
        end 
    end 
); 

I really don't know if it will work, but you can try. To make it work you have to turn on OOP in meta.

Dont work.