Generate, verify, and compare password hashes using 20+ cryptographic algorithms
Select an algorithm to see details
Select an algorithm for specific recommendations
Each algorithm has different security considerations
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Run benchmark to compare algorithm performance
Hashes cannot be reversed to original password, only verified by comparing hashes
Even small changes in input produce completely different hash outputs
Modern algorithms like bcrypt and Argon2 can be slowed down to resist brute-force attacks
Adding random salt prevents rainbow table attacks and ensures unique hashes
Password hashing is essential for secure user authentication. Here's what you need to know:
| Algorithm | Security | Speed | Best For | Not For |
|---|---|---|---|---|
| bcrypt | Excellent | Slow | Password storage | Fast hashing needs |
| Argon2 | Best | Configurable | Modern password storage | Legacy systems |
| SHA-256 | Good | Fast | Data integrity, signatures | Password storage |
| MD5 | Weak | Very Fast | Checksums, non-security | Anything security-related |
A salt is random data added to passwords before hashing. This prevents attackers from using pre-computed rainbow tables. Each password should have a unique salt stored alongside its hash.