Re: xorpng

Rich wrote:

Stefan Claas <pollux@tilde.club> wrote:

*Please* try to write a .ppm (P6) to .png converter (and back) in C(++)
and see if you can get the *original* data back. The sci.crypt community
and me of course would appreciate your help very much!

 
Since you have not "shown your work" (apologizes if you show it later,
I'm replying as I encounter articles in date order) we can't help you
diagnose your problem.

So, to the extent I can tell, you are doing something wrong somewhere.

Please try your conversion steps with the encrypted image, I already
have shown:

https://jmp.sh/HZM9ML9f

It includes a padding byte, needed for ppm so that it is divideable by 3.

--
Regards
Stefan