Password Entropy & Brute-Force Resistance
Password security is measured in bits of entropy. Each additional character and character set exponentially increases the search space required for attackers to crack passwords.
Frequently Asked Questions
How does this password generator ensure cryptographic security?
Our generator uses the W3C Web Cryptography API ('window.crypto.getRandomValues()'), which generates true hardware-seeded cryptographic randomness instead of predictable pseudo-random math.
Are generated passwords uploaded, logged, or visible to anyone?
Never! Everything executes 100% locally inside your web browser sandbox. The generated password is created in client-side memory and never touches a server.
What is the recommended password length for strong security?
Security experts recommend a minimum of 16 to 18 characters combining uppercase, lowercase, numbers, and symbols. A 18-character password provides over 95 bits of entropy, requiring trillions of centuries to brute-force.
What is a Diceware / Memorable Passphrase?
A passphrase combines multiple random dictionary words (e.g., 'Correct-Horse-Battery-Staple'). Passphrases offer high cryptographic entropy while remaining easy for humans to type and remember.
What are ambiguous characters and why exclude them?
Ambiguous characters (like uppercase I, lowercase l, number 1, uppercase O, and number 0) look virtually identical in certain fonts, leading to transcription errors when typing manually.
Can I generate numeric PIN codes for mobile apps and cards?
Yes! Switch to the 'Numeric PIN' mode to generate secure 4-digit to 16-digit numeric codes.