Password Hash Generator
Generate secure password hashes using PBKDF2 with salt. Perfect for understanding password storage security.
Generate Password Hash
Higher = more secure but slower
Generated Hash
Format: algorithm:iterations:salt:hash
Verify Password
About Password Hashing
Password hashing is a one-way cryptographic function that transforms passwords into fixed-size strings. Proper password hashing includes salting and key stretching to protect against common attacks.
Security Principles:
- Salting: Random salt prevents rainbow table attacks
- Key Stretching: Multiple iterations slow down brute-force attacks
- One-Way: Cannot reverse hash to get original password
- Unique Salts: Each password gets its own random salt
Best Practices
Storage
- Never store passwords in plain text
- Always use salt (generated randomly)
- Store algorithm and iteration count with hash
- Use at least 100,000 iterations
Production Use
- Use established libraries (bcrypt, Argon2)
- Don't implement your own crypto
- Increase iterations over time
- Consider hardware acceleration
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