Hawkynt

Argon2i

Password Hashing Competition winner (2015) - data-independent variant resistant to side-channel attacks. Memory access patterns are independent of password content, making it suitable for password hashing in environments with potential side-channel threats.

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 - Argon2i (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	c814d9d1dc7f37aa13f0d77f2494bda1c8de6b016dd388d29952a4c4672b6ce8

Vector 2 — Botan Official Test Vector - Argon2i (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	0f639e5eb9ae1d4d582ccb6033b95551f916a2bdf48ae23d2b8ba4414eb6a182

Vector 3 — Botan Official Test Vector - Argon2i (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	88031ec2094b24a9c4399e7f3fdaa5701dc3bae89917c6ba582e924a547a623d

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