Bcrypt Generator And Hash Verifier Online
Bcrypt Generator And Hash Verifier password hashes. Secure bcrypt encryption with adjustable cost factor. Free, client-side bcrypt tool.
Generate and verify secure bcrypt password hashes
Generate Hash
Verify Hash
How to Use Bcrypt Generator And Hash Verifier Online
- Enter Password: Type the password you want to hash in the password field.
- Adjust Cost Factor: Use the slider to set security level (10 is standard, 12+ for high security).
- Generate Hash: Click "Generate Hash" to create the bcrypt hash.
- Copy Hash: Use the copy button to save the hash for your database.
- Verify (Optional): Test a password against a hash using the verification section.
Frequently Asked Questions
What is bcrypt?
Bcrypt is a password hashing function designed for secure password storage. Unlike simple hashing (MD5, SHA), bcrypt includes a salt and is intentionally slow to resist brute-force attacks. It’s the industry standard for password hashing.
What is the cost factor?
The cost factor (rounds) controls how computationally expensive the hash is. Each increment doubles the time. 10 is standard (about 100ms), 12 is high security (about 400ms), and 14+ is very slow (1-2 seconds). Higher is more secure but impacts login performance.
How do I verify a password?
Enter the plaintext password and the bcrypt hash into the verification section. Bcrypt will rehash the password with the salt from the hash and compare. If they match, the password is correct.
Is my password uploaded to a server?
No! This tool runs 100% in your browser using the bcryptjs library. Your password and hash are never uploaded, transmitted, or stored anywhere. All hashing happens locally on your device.
Can the same password produce different hashes?
Yes! Bcrypt generates a random salt for each hash, so the same password will produce different hashes each time. This is a security feature. All hashes are still valid and will verify correctly.
Why does bcrypt truncate at 72 bytes?
Bcrypt’s underlying algorithm (Blowfish) uses a 72-byte limit. Passwords longer than 72 bytes are truncated. For most use cases, this is more than sufficient. If you need longer passwords, consider using Argon2.