Argon2 Key Derivation Tool
Argon2 FAQ
What is Argon2 used for?
Argon2 is a key derivation function designed for secure password hashing. It protects against brute-force attacks by being memory-hard and computationally expensive.
Which Argon2 variant should I use?
Argon2id is recommended for most applications as it combines the strengths of Argon2i and Argon2d.
What parameters affect Argon2 security?
Iterations, memory size, parallelism, and hash length all affect the security and performance of Argon2.
Is Argon2 better than PBKDF2?
Yes. Argon2 is more resistant to modern GPU/ASIC cracking attacks compared to PBKDF2.
Does Argon2 guarantee unbreakable passwords?
No. Password strength still depends on the complexity and length of the password itself.
What is Argon2?
Argon2 is the winner of the Password Hashing Competition (PHC) and is considered the most secure and modern key derivation function. It is designed to resist GPU and ASIC attacks by using memory-hard computations.
Argon2 has three variants: Argon2i (optimized for password hashing), Argon2d (optimized for resistance against side-channel attacks), and Argon2id (a hybrid mode recommended for most use cases). The tool above derives a cryptographic key from your password and salt using Argon2id parameters.
Argon2 is widely used in modern authentication systems and password managers. By adjusting parameters like iterations, memory, and parallelism, you can control the balance between security and performance.