Password & Passphrase Generator: What It Does
Creates high-entropy passwords and Diceware passphrases using browser cryptographic randomness. It calculates Shannon entropy bits, checks character distribution, and estimates cracking duration.
Example
Length 16, symbols included, count 1k7#Qm2$vL9@xPw4Z (sample; actual output varies each run)Draws random characters uniformly from uppercase, lowercase, numbers, and symbols.
How to Use
- Adjust password length and toggle character classes (uppercase, digits, symbols).
- Switch between character strings and multi-word Diceware passphrases.
- Click Generate and copy the credentials to your password manager.
Limitations
- Generated passwords exist only in active browser memory and cannot be recovered.
- Enabling 'exclude ambiguous characters' slightly reduces the available alphabet size.
Frequently Asked Questions
How many bits of entropy make a password practically unbreakable?
A password with 80 or more bits of entropy requires trillions of guesses, rendering brute-force attacks impractical against modern hashing functions.
Why are Diceware passphrases often easier to remember yet secure?
Diceware chains common words randomly, creating lengthy strings with high overall entropy that human memory can retain much better than random symbols.
Command-Line Equivalent
openssl rand -base64 24Generate a random base64 secret with OpenSSL.
Embed or Cite Password & Passphrase Generator
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