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Cryptographic Security Tool

Secure Password Generator

Generate strong, high-entropy passwords with custom length and character sets. Built with browser-native cryptographic randomness (CSPRNG).

Password Length16 characters

What Makes a Password Strong? (NIST Guidelines)

According to the National Institute of Standards and Technology (NIST Special Publication 800-63B), password length is the single most critical factor in resisting modern brute-force and dictionary attacks.

  • Length over Complexity: A 16-character alphanumeric passphrase provides significantly higher mathematical entropy than an 8-character password with arbitrary symbol substitutions.
  • Cryptographic Randomness: Standard Math.random() is deterministic and predictable. Our generator uses crypto.getRandomValues(), the browser's cryptographically secure pseudo-random number generator (CSPRNG).
  • Zero Cloud Transmission: Generated passwords never touch a server or remote network, eliminating exposure to MITM intercepts or logging.

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