Bcrypt Hash Generator - Secure Password Hashing
Generate and verify bcrypt password hashes online for free. Bcrypt is a secure password hashing function designed to be slow and resistant to brute-force attacks. All processing happens locally in your browser.
Secure Hashing
Bcrypt uses adaptive hashing with configurable cost factor for maximum security.
Hash Verification
Verify passwords against bcrypt hashes to test authentication systems.
Adjustable Rounds
Configure salt rounds (4-12) to balance security and performance.
Generate Bcrypt Hash
Higher rounds = more secure but slower (recommended: 10)
Verify Bcrypt Hash
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, meaning the cost factor can be increased as computers get faster, making it resistant to brute-force attacks over time.
Why Use Bcrypt for Password Hashing?
- Slow by Design: Bcrypt is intentionally slow, making brute-force attacks impractical
- Adaptive: Cost factor can be increased as hardware improves
- Salted: Automatically generates and includes a unique salt for each hash
- Industry Standard: Widely used and trusted by major applications
- Rainbow Table Resistant: Salt makes pre-computed attacks ineffective
Understanding Salt Rounds
The cost factor (salt rounds) determines how computationally expensive the hash function is. Each increment doubles the time required to compute the hash.
| Rounds | Iterations | Recommended For |
|---|---|---|
| 4-6 | 16-64 | Testing only |
| 8-10 | 256-1,024 | Standard applications |
| 12+ | 4,096+ | High-security applications |