I was wondering if someone on this forum knows where

I could find mathematical algorithm / procedures / functions

to calculate operations like : scrambling,interliving,

deinterlevieng,CIRC,P%Q parity.

I would be really greatfull for anykind of help.

It’s all in here.

http://www.ecma-international.org/publications/standards/Ecma-130.htm

…though I never understood the P and Q bytes calculations… my math knowledge must not be enough…

You should look at cdrdao source code.

Many thanks for your help.Still can I find any information on the internet related to EXE encryption / anti-hacking or anti-cracking??

Many thanks again

Anti-cracking is futile, but if you really want a

link, check the fravia archive at anticrack.de

(these were good times…).

Is there any way to get drives RPM, for example when playing music CD?