First of all thanks a lot for your answer.
@achow101 :
this is a bit what i was afraid of learning
but i would like to know more and debate about what Carlton Banks said
could we consider this ? by addind a code to the hashing script for example ?
@Neuroticfish :
good point but in this case like you said, i don't add any security to the data because if someone steal the script, datas are available, so
what I want to think of is a bit what you said but with the "encryption scrip" "somehow included in the blockchain.
the goal is basically to "get ride of the transparent aspect of blockchain" but to keep the security of the hashing power
I know this is really strange question but i think it could be interessant
Thanks again