Hawkynt

Argon2d

Password Hashing Competition winner (2015) - data-dependent variant providing maximum resistance to GPU cracking attacks but vulnerable to side-channel attacks. Uses memory access patterns dependent on password content.

Properties

Property	Value
Category	Key Derivation Functions
Sub-category	Memory-Hard Password Hashing
Security status	🛡️ Secure
Complexity	Advanced
Inventor	Alex Biryukov, Daniel Dinu, Dmitry Khovratovich
Year	2015
Origin	🌐 International
Source	algorithms/kdf/argon2.js

Parameters

Parameter	Supported values
Output sizes	4 bytes (32 bits) to 1024 bytes (8192 bits)

Capabilities

Flag	Value
SaltRequired	Yes

Security

Status: 🛡️ Secure

No vulnerabilities are recorded for this implementation.

Documentation

• RFC 9106 - Argon2 Memory-Hard Function for Password Hashing
• Argon2 Specification
• Password Hashing Competition

References

• PHC Winner Argon2 Reference Implementation
• Botan Argon2 Implementation
• NIST - Password-Based Key Derivation

Test vectors

3 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.

Vector 1 — Botan Official Test Vector - Argon2d (M=32, T=3, P=4)

Field	Value
password	0101010101010101010101010101010101010101010101010101010101010101
salt	02020202020202020202020202020202
secret	0303030303030303
ad	040404040404040404040404
M	32
T	3
P	4
outputSize	32
input	0101010101010101010101010101010101010101010101010101010101010101
expected	512b391b6f1162975371d30919734294f868e3be3984f3c1a13a4db9fabe4acb

Vector 2 — Botan Official Test Vector - Argon2d (M=64, T=3, P=4)

Field	Value
password	0101010101010101010101010101010101010101010101010101010101010101
salt	02020202020202020202020202020202
secret	0303030303030303
ad	040404040404040404040404
M	64
T	3
P	4
outputSize	32
input	0101010101010101010101010101010101010101010101010101010101010101
expected	ab75c7556cd63bbaa818e02dbdfe8c69e80375d64b31d6a7b2bf41da7f7c9951

Vector 3 — Botan Official Test Vector - Argon2d (M=128, T=3, P=4)

Field	Value
password	0101010101010101010101010101010101010101010101010101010101010101
salt	02020202020202020202020202020202
secret	0303030303030303
ad	040404040404040404040404
M	128
T	3
P	4
outputSize	32
input	0101010101010101010101010101010101010101010101010101010101010101
expected	5fc18a6a56b67cadf60287babc490ca0e866f0880a2b51e56a0ab0a640179d13

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