Password Generator — Create Strong, Usable Credentials
Passwords remain a foundational security control. A strong approach combines high entropy (unpredictability), length, and secure storage. This guide explains entropy, passphrases vs random strings, password manager best practices, and secure backup patterns for individuals and teams.
Entropy & length — what matters
Entropy measures unpredictability. Longer passphrases made of random words often give more entropy for the same memorability than short complex passwords. Aim for 80+ bits of entropy for long-term safety for most accounts; for most users, a 4–6 word random passphrase provides very strong security when words are well chosen.
- Random string example: 16–20 characters with mixed types provides strong entropy.
- Passphrase example: 4–6 random dictionary words separated by symbols can be easier to type and remember.
Passphrases vs random strings — pros and cons
Passphrases are usually easier to remember; random strings are compact but harder to memorize. Use a manager to avoid memorization altogether for most logins.
- Use a manager: for all service accounts and long random strings — no need to memorize.
- Memorizable passphrases: for device pins or accounts where typing from memory is common (but only if entropy is high).
- High-security accounts: use multi-factor authentication in addition to a strong, manager-stored password.
Use a password manager — your single trusted vault
Password managers generate, store, and autofill credentials securely. They reduce reuse and enable long unique passwords per account.
Manager best practices
- Choose a reputable manager and enable a strong master passphrase.
- Enable multi-factor authentication on the manager account.
- Use secure export and avoid exposing raw password files.
Backups & sharing — secure patterns
Backups are necessary but risky. Exported password files must be encrypted and stored securely.
- Export manager backup only when necessary and encrypt the file with a strong passphrase.
- Store backups in an encrypted cloud vault or secure offline storage.
- For sharing credentials with teammates, use manager sharing features or a secure secrets tool rather than emailing passwords.
Team policies & rotation
Teams need shared secrets handling and rotation policies. Use dedicated secrets management for service accounts and audit access.
- Use role-based access and short-lived credentials where possible.
- Rotate shared credentials on a schedule and after role changes.
- Audit access logs and use manager-provided teams features for secure sharing.
FAQ
Q: Is a 16-character password enough?
A: Depends on randomness — a 16-character random mix is strong; a memorable 16-character phrase with low entropy is weaker. Prefer longer and manager-stored random values.
Q: Should I save passwords in plain text?
A: Never — always use an encrypted manager or encrypted storage. Plain text files are insecure.