Simple program for Linux to encode any input file inverting all bits;
i'm a newbie so i'm waiting for corrections and suggestions.

- i could only use registers but i think in this way is more readable
- bytes read in a single pass can be set at the beginning of ile with BYTES symbol (speed)
- cypher method can be changed easily

examples:

ENCODE

echo "test" | ./cypher_input

DECODE

echo "test" | ./cypher_input | ./cypher_input

I hope can be useful for newbies