applet that do not download itself in the client

> You can do this with any applet. Simply never upload

> it to a server and no-one will be able to download

> your precious content.

I think that your answer was not necessary...

I dont have any "precious content"... just wanna know if there is a way to do it...

luisofta at 2007-7-14 20:16:46 >

you could include your private content into a class that is then encrypted.

e.g

you have some pictures that you do not want the user to cache

have generate java code that will wrap the pictures into a class.

i.e.

-read in picture into a byte array

-Perform some sort of encryption on the byte array

-generate a .java source file containing the byte array.

-complie the source

-include and use the .class file in your applet.

Say we have a byte array:

byte[] pic ={1,2,3,4,5,6,7,8,9,10};

we perform some encryption:

pic now equals {10,5,8,2,4,9,7,6,1,3};

generate a java source file:

class PicData

{

byte[] pic ={10,5,8,2,4,9,7,6,1,3};

static byte[] getPic()

{

return pic;

}

}

compile the source and then in your applet:

byte[] pic=decrypt(PicData.getPic());

where decyrpt() decrypts the encrypted byte array back to a usable form.

If the content is pictures then all the user has to do is perform a screen capture to avoid this scheme.

you probably would want to perform some obsufication(sic) of your applet so a determined user could not de-compile your applet's byte code.

klana001a at 2007-7-14 20:16:46 >