Pyarmor, guard your python scripts

Jondy Zhao jondy.zhao at gmail.com
Fri Sep 18 13:41:08 CEST 2015


On Friday, September 18, 2015 at 6:06:51 PM UTC+8, alister wrote:
> 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
> 
> 
In reality, when we leave the house, we lock the door, even the lock could not make sure the safe of our property. It's just make it difficult. It's same in the software world. Someone need the lock in both of the world. 

And if the highway man need leave the trunk for many days, whether they lock the truck or ask someone to take care of it or not.

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



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