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Re^21: Perl 6 ... dead? (no, just convalescing)

by Wassercrats
on Sep 03, 2004 at 18:12 UTC ( #388365=note: print w/replies, xml ) Need Help??

in reply to Re^20: Perl 6 ... dead? (no, just convalescing)
in thread Perl 6 ... dead?

I don't want to help promote decompilers, even if they don't work well.
  • Comment on Re^21: Perl 6 ... dead? (no, just convalescing)

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Re^22: Perl 6 ... dead? (no, just convalescing)
by jryan (Vicar) on Sep 03, 2004 at 19:10 UTC

    Jad is very old. 6 years old. Try a newer decompiler, like DJ, or Borland's JBuilder decompiler, which is based on Mocha, the original Java decompiler.

      If those decompilers are good, I guess I'd decide to use C, or I'd look into Visual Basic. I'd do whatever the successful commercial software companies do.

        I'm not sure where you got the idea that Visual Basic was non-decompilable. Take a look at:

        Any unencrypted language is decompilable. Think about it: the computer/virtual machine/interpreter has to be able to run the program, right? To do that, it must be in some sort of order. The logic must be there some how. A decompiler is just a program that goes through the code (whether it be plaintext, bytecode, or machine code) just like whatever is running the code, but instead of running each command, it spits out equivalant source code for that command. (That's just a simplication, of course; decompilers need to be a bit more sophisticated to handle a command that maps to several lines of lower level code, for instance).

        So, knowing this, you should be able to see why decompilers are *not* a good way to secure source code. The only way source code would really be secure is if a computer/virtual-machine/interpreter/whatever-is-running-your-code had a way to natively encrypt/decrypt the source. (Think: you supply a password when compiling your program, and your user has to enter this password when running your program). I do not know of any language that has this feature, not even Java, probably because it would be a huge pain in the ass to users.

        These days the big guys like Microsoft are just trying to buy politicians since none of the technologogical "fixes" work all that well.

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