Bcrypt Hash Generator & Verifier
Generate secure salted Bcrypt password hashes and verify plain text passwords against existing Bcrypt hashes.
1 How to Use the Bcrypt Hash Generator & Verifier
To generate: Switch to 'Generate Hash', enter password, choose salt rounds (recommended: 10-12), click 'Generate'.
To verify: Switch to 'Verify Match', enter plain text password and paste existing $2a$/$2b$ Bcrypt hash.
Click 'Verify Password' to get an instant match/mismatch result.
Copy the resulting hash or verification status.
2 Technical Specifications
| Specification | Details & Capabilities |
|---|---|
| Algorithm | Bcrypt Blowfish-based adaptive password hashing |
| Cost Factor | 4 to 14 logarithmic salt rounds (default 10) |
| Format | $2a$ or $2b$ modular crypt format (60 characters) |
| Client Execution | Compiled JavaScript Bcrypt Engine |
Trust and Privacy
100% Client-Side Privacy Guarantee
All calculations run directly in your local browser memory. Zero data is ever transmitted, logged, or stored on remote servers.
4 Frequently Asked Questions
Q. Why is Bcrypt preferred over SHA-256 for passwords?
Bcrypt is deliberately computationally slow and memory-intensive, with a tunable cost factor that neutralizes GPU and ASIC brute-force cracking hardware.
Q. Why does the hash change every time for the same password?
Bcrypt generates a cryptographically random 128-bit salt each time, ensuring identical passwords have completely different hashes to defeat rainbow table attacks.