Apple some years ago proposed a string format for password rules – to be used in password managers and also an HTML attribute for that:

  <input type="password" passwordrules="minlength: 8; maxlength: 12; required: lower; required: upper; required: digit; required: [-];">

It seems implemented in Safari and UIKit, but I can’t find any implementation documentation for other brothers. Sad.

https://developer.apple.com/password-rules/

https://developer.apple.com/documentation/security/customizi...