Pyarmor, guard your python scripts

alister alister.nospam.ware at ntlworld.com
Fri Sep 18 12:06:37 CEST 2015


On Fri, 18 Sep 2015 01:31:50 -0700, Jondy Zhao wrote:

> On Friday, September 18, 2015 at 4:08:57 PM UTC+8, alister wrote:
>> On Thu, 17 Sep 2015 22:38:32 -0700, Jondy Zhao wrote:
>> 
>> > On Friday, September 18, 2015 at 1:02:09 PM UTC+8, Chris Angelico
>> > wrote:
>> >> On Fri, Sep 18, 2015 at 12:40 PM, Jondy Zhao <jondy.zhao at gmail.com>
>> >> wrote:
>> >> > The loader only can see the compiled scripts as ast nodes, even if
>> >> > the load some tools could dump the separated ast node to bytecode
>> >> > and de-compile it, think of one script is divided into thousands
>> >> > of pieces, it's not easy to assemble them again.
>> >> >
>> >> > The final solution is to distribute the loader with encrypted
>> >> > scripts, only my own loader can run the encrypted scripts.
>> >> 
>> >> So anyone who's going to run your program needs your loader. If
>> >> someone wants to redistribute your code, s/he can simply distribute
>> >> the loader as well - and you're right back where you started. You
>> >> have still achieved nothing in terms of preventing redistribution.
>> >> 
>> >> Please do not do this. Not only are you not achieving the goal you
>> >> think you are, you're making a mess for people to have to deal with.
>> >> 
>> >> ChrisA
>> > 
>> > But the loader and the encrypted scripts could be bind to one fixed
>> > computer when I distribute them to end users, so the end users can't
>> > redistribute them to any other machines. Actually this is what some
>> > commercial software does.
>> 
>> Making life difficult for legitimate users whilst causing Pirates minor
>> difficulties at best (crack once distribute many)..
>> 
>> Copyright legislation is what provides you with protection if you need
>> it
>> 
>> Commercial users do not risk running unlicensed software because of the
>> damage a piracy case against them would cause to their business, not
>> because they cant get it!
> 
> I agree with you absolutely. Maybe I can show you the purpose of Pyarmor
> by the following case:
> 
> When we express a box, we can close this box with a lock, this equals
> encrypted scripts, or we just close the box without a lock. Pyarmor is
> just as this lock, it make the box more security, but it can not protect
> the box completely.

And if the person at the other end looses the key it causes a great deal 
of trouble.

Alternatively the highway man that holds up the delivery truck simply 
takes a pair of bolt cutters to the lock...

yes it stops a casual snooper but that is all




-- 
A statesman is a politician who's been dead 10 or 15 years.
		-- Harry S. Truman


More information about the Python-list mailing list