how can I sell an indicator without be crack?

[hongbin fei]

I write a indicator for draw trendline like a man, how can I sell an indicator without be crack? is it safe?

 

hongbin.fei 

[[Deleted]]

Keywords:

hash function, cryptography, encryption, Adler-32, MQL, hash, checksum algorithm, unique magic;

https://www.mql5.com/en/code/274 

[hongbin fei]

FinGeR:

Keywords:

hash function, cryptography, encryption, Adler-32, MQL, hash, checksum algorithm, unique magic;

https://www.mql5.com/en/code/274 

 

 

I think it is still cannot protect my indicator by this way