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Global Accelerated Learning • Est. 1999
Glossary Term Argon2

Training Camp • Cybersecurity Glossary

What is Argon2?

Argon2 is a memory-hard password hashing function and PHC winner; the Argon2id variant is the recommended default for secure password storage.

Glossary > Cryptography & PKI > Argon2

Understanding Argon2

Argon2 is a memory-hard password hashing and key derivation function that won the Password Hashing Competition in 2015 and is recommended for storing passwords securely. It comes in three variants: Argon2d, which maximizes resistance to GPU cracking; Argon2i, which is hardened against side-channel attacks; and Argon2id, a hybrid that is the generally recommended default. Its tunable memory, time, and parallelism parameters make brute-force and hardware-accelerated attacks costly. Argon2 is specified in RFC 9106.

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