This regular expression allows you to simply check if a password matches with your conditions. By default it will require:

• 1 {1} uppercase letter [A-Z] or more
• 1 {1} lowercase letter [a-z] or more
• 1 {1} number [0-9] or more
• 1 {1} special character [@#$%^!&+=.\-_*] or more You can easily change the minimum by editing the value in the respective {1}