Argon2 Password Hash Generator & Verifier - Secure Hashing Online

Argon2 Password Hash Generator

Generate and verify secure password hashes using Argon2id - the winner of the Password Hashing Competition.

PHC Competition Winner

Generate Hash

Argon2id

Argon2id combines benefits of both i and d variants.

Default: 64 MB

Default: 3

Threads to use

Default: 32 (256-bit)

Argon2 Hash (PHC Format)
Computation Time

Verify Hash

Verification

Paste the full hash string including the $argon2 prefix.

Verification Result

Enter the password and hash to verify.

Argon2 - Modern Password Hashing

Argon2 is a key derivation function that won the Password Hashing Competition (PHC) in 2015. It provides superior defense against GPU cracking attacks and is recommended by OWASP.

Argon2 Variants Comparison

Variant Best For Description Recommendation
Argon2id General password hashing Hybrid approach: uses Argon2i for first half, Argon2d for second half Strongly Recommended
Argon2i Side-channel attack resistance Data-independent memory access pattern Specialized Use
Argon2d Cryptocurrency mining Data-dependent memory access, faster but vulnerable to side-channel Limited Use

Recommended Parameters (OWASP 2023)

Use Case Memory (m) Iterations (t) Parallelism (p)
Minimum Security 19 MB 2 1
Standard (Default) 64 MB 3 1
High Security 1 GB 4 4

Performance Note: Higher memory and iteration values provide better security but increase computation time. The default values (64MB, 3 iterations) take approximately 0.5-1 second on modern hardware.

PHC String Format

Argon2 hashes use the PHC (Password Hashing Competition) string format:

$argon2id$v=19$m=65536,t=3,p=1$c2FsdHNhbHRzYWx0c2FsdA$WxK8SDVyNpCThLlC... Structure: ├── $argon2id → Algorithm (argon2id, argon2i, or argon2d) ├── $v=19 → Version (19 = 0x13) ├── $m=65536 → Memory in KB (64 MB) ├── ,t=3 → Time cost (iterations) ├── ,p=1 → Parallelism (threads) ├── $c2Fsd... → Salt (Base64 encoded) └── $WxK8S... → Hash (Base64 encoded)

Usage Example

// Node.js with argon2 package const argon2 = require('argon2'); // Hash a password const hash = await argon2.hash('myPassword', { type: argon2.argon2id, memoryCost: 65536, // 64 MB timeCost: 3, // 3 iterations parallelism: 1 }); // Verify password const isValid = await argon2.verify(hash, 'myPassword'); console.log(isValid); // true
Try other encryption, hashing, and signing utilities.
JWT Generator Build signed JSON Web Tokens JWT Decoder Inspect and validate JWT payloads JWT Validator Verify JWT signatures and claims Bcrypt Generator Hash and verify passwords MD5 Checker Create and validate MD5 hashes RSA Encrypt/Decrypt Encrypt, decrypt, and generate RSA keys AES Encrypt/Decrypt AES CBC/ECB encryption and decryption ChaCha20 Cipher 256-bit key, 96-bit nonce stream cipher PGP Encrypt/Decrypt Generate PGP keys and exchange messages Triple DES Encrypt and decrypt with 3DES (CBC/ECB) HMAC Generator Compute HMAC with SHA-256 or SHA-512 Jasypt Passwords Encrypt, decrypt, and verify Jasypt strings Text Encrypt/Decrypt Encrypt and decrypt text with AES-256 File Encrypt/Decrypt Encrypt and decrypt files with AES-256-GCM Password Strength Analyze password strength and generate secure passwords SAML Decoder Decode and parse SAML requests and responses Random Address Generator Generate realistic test addresses for 17+ countries

Popular Posts





See Also