Suggest method which you using for generating key ?
For example using \Phalcon\Security\Random (and how exactly)
\Phalcon\Security\Random
What do you mean? The cipher? Or the Hash algorithm?
I mean $key for $crypt->encrypt($text, $key);
$key
$crypt->encrypt($text, $key);
from here https://docs.phalcon.io/en/3.4/crypt#basic-usage