Re: how to encryption code written in lua language

[Oliver Kroth <oliver.kroth@...>]

    Rana,
    
    the problem is that you can't really encrypt the program, as it has
    to be decrypted to run, and for this the key must be there as well.
    You can't hide the key, as someone who analyses the decryption code,
    will see it.
    
    The only thing I could propose, is to use a binary chunk of code
    with debug information stripped.
    And hope that your target system is not a standard PC, but a CPU
    with different byte order.
    
    Regards,
    
    Oliver

Am 07.08.23 um 14:52 schrieb Rana Ayaz:

I can't add any 3rd party libraries and I want to encrypt the code with the default libraries.
I have heard that some people Encrypt the code using AndroLua+ Android mobile application
But I don't know how to encrypt through this application
Can any expert explain me step by step how to encrypt code using this android application
Or there is a way in which we can encrypt androlua code through android mobile itself

On Mon, Aug 7, 2023, 8:14 AM bil til <biltil52@gmail.com> wrote:

But anybody using your encrypted Lua then will need your "Lua decrypt" code on his phone...  .

I somebody knows Lua "quite well" (and those are many) it should then be straight forward to read such code in a reasonable nice form, at least suitable for programming.

If you have the possibility to add C code library functions to your Lua, then of course you have much "harder possibilities" to achieve something this, but I cannot imagine how this encrypt/decrypt game would run in a reasonable way "just by Lua", except if you use some lib for e. g. AES 256 encryption/decryption and deliver the decrypt 256 bit code to anybody who wants to use your code (just this person then evidently will be quite powerful enabled to decrypt your code).

Am So., 6. Aug. 2023 um 21:51 Uhr schrieb Rana Ayaz <rana.ayaz1@gmail.com>:

Actually I want that if I send this code to someone, the other person will not be able to understand what is written in this code and how this code is generated.
But do the work perfectly when running the coat, just so that the coat cannot be understood by others
I am using androlua application in my Android mobile
guide me with this application

On Sun, Aug 6, 2023, 9:22 PM mystery_ace <07juwonc@kakao.com> wrote:

Hi Rana,

Please specify what you mean by encryption.

Do you mean obfuscating the code?

Or do you mean encrypting the end result?

---- 원본 메일 ----
보낸 사람 : Rana Ayaz<rana.ayaz1@gmail.com>
받는 사람 : Lua mailing list<lua-l@lists.lua.org>
날짜 : 23.08.07 00:14 GMT +0800
제목 : how to encryption code written in lua language

respected experts what is the exact method to encryption my code written in androidlua language
I given a code below
please guide me how to I encryption this code

require "import"
-- import "com.androlua.*"
Http.get("https://www.urdupoint.com/sports/series/215/asia-cup-2023-schedule.html", function(status, result)
if status == 200 then

for mn, t1, dt, st, t2 result:gmatch('<span class="fix_match_num">(.-)</span>.-<div class="fixb1">.-<h4>(.-)</h4>.-<p class="fix_match_dtime">(.-)</p>.-<p class="fix_match_stadium">(.-)</p>.-<div class="fixb3">.-<h4>(.-)</h4>') do
print(mn, "\n\n", t1, "vs", t2, "\n\n", st, "\n\n", dt)
end
else
print("The page was not found")
end
end)