Need Help with this token

I am currently having problems generating this token.
It changes whenever i enter something.

1st login: [email protected] → ch_token “4gziNo2RNo2RNo2RMlb9z57ZMlb9Mlb9”
2nd login: [email protected] → 4gziNo2RNo2RNo2RMlb9z57ZMlb9Mlb9
when i change the password from aaaaa to aaaaaaaa then this is the new token: No2RNo2RNo2RNo2RNo2RMlb9Mlb9z57ZMlb9Mlb9

In the Js i found this:
{ch_token:(0,l.jsChallenge)(e.section.length)}

can someone help me? Would be apreciated!