Online Passwort Regex Validator
Unternehmensweite Sicherheitsrichtlinien durchsetzen. Positive Lookahead-Assertionen und Komplexitätsanforderungen in Echtzeit prüfen.
Password Regex Validation FAQ
How do lookaheads work in a regex password validator?
Lookaheads like (?=.*[a-z]) check ahead from the start anchor (^) to ensure at least one lowercase character exists in the string without consuming characters. Chaining multiple lookaheads allows validating lowercase, uppercase, numbers, and symbols simultaneously.
What is the recommended regex pattern for strong passwords?
A widely adopted strong password pattern is: /^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,32}$/. It enforces at least 1 lowercase letter, 1 uppercase letter, 1 number, 1 special character, and a length between 8 and 32 characters.
What does NIST say about regex password rules?
NIST Special Publication 800-63B recommends favoring password length (min 8-15 characters) over strict character composition rules, and checking passwords against leaked breach dictionaries rather than frustrating users with arbitrary symbol restrictions.