KDF Key Derivation Tool
Derive strong binary keys from passwords.
PBKDF2
HKDF
Scrypt
Argon2id
SHA-256
SHA-512
SHA-1
SHA-384
Key Material (IKM/Shared Secret)
Hex
UTF-8
Base64
Waiting for input
0 chars
Salt:
Hex
UTF-8
Base64
16 字节建议
0 chars
Input Parameters
Parameters Ready
PBKDF2
Derivation Result
Hex
Base64
Waiting for execution...
0 chars
LOCAL All operations are performed locally in the browser and no data will be uploaded.

What is KDF (Key Derivation Function)?

A Key Derivation Function (KDF) is an algorithm that derives one or more secret keys from a secret value such as a password or passphrase using a pseudorandom function. It protects against rainbow table and brute-force attacks by using salts and increasing computational cost.

🎯

Core Value

  • Defends brute-force
  • Prevents rainbow tables
  • Uniform key length
  • Supports randomization
📋

Supported Algorithms

  • PBKDF2 (Common Standard)
  • Scrypt (ASIC-resistant)
  • Argon2 (Modern Standard)
🚀

Scenarios

  • User password storage
  • Disk encryption keys
  • Digital signatures
  • Communication protocols
💎

Technical Features

  • One-way irreversible
  • Adjustable cost
  • Salt support

🚀 Usage Guide

  • Password: Enter your original password or passphrase.
  • Salt: Random salt is recommended; different salts produce different results.
  • Parameters: Adjust iterations and length based on security needs.
  • Execute: Click derive to get your high-strength key.

💡 Security Advice

Why do KDFs need iterations?
Increasing iterations raises the time cost for an attacker to test a single password, enhancing security without significantly impacting user experience.
What is a Salt?
Salt is random data added to the password. Even if two users have the same password, unique salts ensure their derived keys are completely different.

🔗 Related Tools