Argon2 is a modern password-hashing function designed to make password cracking more expensive through configurable time, memory, and parallelism costs. It matters because password defenders need storage methods that slow down attackers trying to crack large numbers of stolen hashes offline.
What is Argon2?
Argon2 is widely recommended for secure password storage because it is memory-hard and tunable, making large-scale offline guessing attacks more expensive. It is especially valuable compared with fast general-purpose hashing that is easy for attackers to compute at high speed.
What Argon2 Commonly Supports
Common uses include password databases, account systems, credential storage modernization, and improved resistance to offline cracking after breaches.
Argon2 vs. Fast General-Purpose Hashing
Fast general-purpose hashing is efficient for many applications but poor for password storage. Argon2 is intentionally heavier to make cracking harder.
Frequently Asked Questions
Why is Argon2 preferred for password hashing?
Because it is built specifically to resist large-scale offline guessing by consuming meaningful computational resources.
Is Argon2 only for passwords?
Its primary value is password hashing, though related derivation uses also exist in some designs.
Related Cybersecurity Terms
