Bcrypt Hash Generator
Generate secure bcrypt hashes for passwords and sensitive data with our reliable tool
Input Data
10
Faster (4)
Balanced (10)
Stronger (20)
Options
Generated Hash
Hash Length
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Salt Rounds
--
Generation Time
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Verify Hash
Enter text and hash to verify if they match.
🔐 About Bcrypt Hashing
What is Bcrypt?
Bcrypt is a password hashing function designed by Niels Provos and David Mazières, based on the Blowfish cipher. It incorporates a salt to protect against rainbow table attacks and is adaptive over time to combat increasing hardware performance.
How It Works
Bcrypt uses a configurable number of iterations (work factor) to intentionally slow down the hashing process, making brute-force attacks more difficult. The output includes the salt, algorithm identifier, cost factor, and the resulting hash.
Salt Rounds
The work factor (salt rounds) determines the computational cost. Each increment doubles the time needed. Recommended values are 10-12 for most applications, but can be increased as hardware improves.
Hash Format
A bcrypt hash typically looks like: $2a$10$N9qo8uLOickgx2ZMRZoMy.MrE6H6bZQ7JYw9sYAgXrOj7QwQ1q1O. where 2a is the version, 10 is the cost factor, and the rest contains the salt and hash.
🛡️ Password Security Best Practices
Always Hash Passwords
Never store passwords in plain text. Always use strong, adaptive hashing algorithms like bcrypt, scrypt, or Argon2.
Choose Appropriate Work Factor
Select a work factor that provides adequate security without excessive delay. 10-12 rounds is typically sufficient for most applications.
Use Unique Salts
Ensure each password has a unique salt to prevent rainbow table attacks. Bcrypt automatically handles this.
Periodically Rehash
Consider rehashing passwords with a higher work factor as hardware improves, but only when users next authenticate.
Prevent Timing Attacks
Always compare hashes using constant-time functions to prevent timing attacks that could reveal information.
Follow Standards
Adhere to OWASP and NIST guidelines for password storage and authentication security.
Dark Mode
Note: This tool runs entirely in your browser - no data is sent to any server. For maximum security when handling sensitive passwords, consider using this tool offline or in a trusted environment.