PBKDF2 Hash Generator (Encryption)
Generate (Encryption) a PBKDF2 derived key from a password, salt, and other parameters using the Web Crypto API. The output is a hex-encoded string.
Higher is more secure (e.g., 100,000+).
Common lengths: 16, 32, 64.
What is PBKDF2 Hash Generator / Encryption?
PBKDF2 (Password-Based Key Derivation Function 2) is a key derivation function that's designed to be slow and computationally expensive, making it ideal for securely hashing passwords and generating encryption keys. Our free online PBKDF2 hash generator helps you create secure derived keys using industry-standard algorithms.
Key Features
- Multiple Hash Algorithms: Support for SHA-256, SHA-512, SHA-384, and SHA-1
- Customizable Parameters: Adjust iterations, key length, and salt for your security needs
- Random Salt Generation: Generate cryptographically secure random salts
- Hex & UTF-8 Salt Support: Use both hexadecimal and UTF-8 string formats
- Client-Side Processing: Your passwords never leave your browser - 100% secure
- Standards Compliant: Built on the Web Crypto API for secure, consistent results
Why Use PBKDF2?
PBKDF2 is widely adopted because it's a proven, standardized method for key derivation. Unlike simple hash functions, PBKDF2 includes a salt and requires multiple iterations, making it resistant to rainbow table attacks and brute force attempts. It's recommended by security standards like NIST and is used in many enterprise applications.
Security Best Practices
Security Recommendations: Use at least 100,000 iterations for new applications. Generate unique, random salts for each password. For stronger security, it’s better to go with SHA-256 or SHA-512 instead of SHA-1.
Common Use Cases
- Password Storage: Securely hash user passwords for database storage
- Key Derivation: Generate encryption keys from passwords
- Authentication Systems: Implement secure login mechanisms
- Compliance Requirements: Meet security standards for password handling
- Migration Projects: Convert from weaker hashing methods to PBKDF2
Parameter Guide
| Parameter | Recommended Value | Purpose |
|---|---|---|
| Iterations | 100,000+ | Increases computation time to prevent brute force |
| Key Length | 32 bytes (256 bits) | Provides adequate security for most applications |
| Salt Length | 16+ bytes | Prevents rainbow table attacks |
| Hash Algorithm | SHA-256 | Good balance of security and performance |
Frequently Asked Questions
How is PBKDF2 different from bcrypt?
Both are secure key derivation functions, but PBKDF2 is a standard (RFC 2898) while bcrypt is an algorithm. PBKDF2 allows more customization of parameters and is widely supported across platforms.
Is it safe to use this online tool?
Yes! All processing happens in your browser using the Web Crypto API. Your passwords and data never leave your device or get sent to any server.
What's the difference between salt formats?
UTF-8 string format is human-readable (like "mysalt"), while hexadecimal format uses hex encoding (like "6d7973616c74"). Both are secure when properly randomized.
How many iterations should I use?
Current recommendations suggest at least 100,000 iterations for PBKDF2. Higher values increase security but also computation time. Adjust based on your security requirements and performance needs.
💡 Pro Tip: Always use unique salts for each password and store both the salt and the derived key. The salt doesn't need to be secret, but it must be unique per password to be effective.