RandomSecure
Generate a Passphrase
Why Use Passphrases?
Passphrases offer several advantages over traditional passwords:
- Easier to remember - Human brains are better at remembering phrases than random characters
- High entropy - Multiple random words provide high security against brute force attacks
- Length over complexity - Longer passphrases can be more secure than shorter complex passwords
- Typing convenience - Easier to type accurately, especially on mobile devices
Passphrase Entropy
With a default configuration of 4 words chosen from a pool of 7,776 candidate words, the generated passphrases boast an impressive 51 bits of entropy (log2(7776^4) ≈ 51.7). This entropy level is roughly equivalent to that of a 12-character password composed of random lowercase letters, uppercase letters, digits, and symbols drawn from a 72-character set (log2(72^12) ≈ 51.5).
How Our Passphrase Generator Works
Our passphrase generator creates secure, memorable passphrases using:
- Cryptographically secure random number generation - Uses Web Cryptography API instead of Math.random()
- Curated word lists - Common, memorable words selected to balance security and usability
- Entropy calculation - Real-time assessment of passphrase strength
- Customization options - Adjust word count, capitalization, separators, and more to meet your security needs
All generation happens client-side in your browser. No data is transmitted to our servers, ensuring complete privacy of your security credentials.
Passphrase Security Resources
Learn more about passphrase security from these trusted sources:
Security Standards
Our implementation follows these guidelines to ensure the highest level of security for your passphrases.