Key Facts
- Category
- Security & Validation
- Input Types
- textarea, number
- Output Type
- json
- Sample Coverage
- 1
- API Ready
- Yes
Overview
The Argon2 Password Hash Generator allows you to securely hash plaintext passwords using the Argon2id algorithm. You can customize key cryptographic parameters including memory cost, iterations, parallelism, salt length, and hash length to generate standard PHC-formatted strings suitable for modern database storage and authentication systems.
When to Use
- •When implementing secure user authentication systems that require OWASP-recommended Argon2id password hashing.
- •When testing or verifying backend password verification logic with custom Argon2 parameters.
- •When generating secure, salt-based cryptographic hashes for configuration files or database seeding.
How It Works
- •Enter the plaintext password you want to hash in the input field.
- •Configure the Argon2 parameters such as memory (KiB), iterations, parallelism, salt length, and hash length.
- •Generate the hash to output the standard PHC string format containing the algorithm parameters, salt, and hash.
Use Cases
Examples
1. Generate OWASP-Compliant Argon2id Hash
Backend Developer- Background
- A developer needs to seed a test database with a secure admin user password using OWASP-recommended Argon2id parameters.
- Problem
- Generating a secure, standard PHC string for the password 'correct horse battery staple' with 19456 KiB memory and 3 iterations.
- How to Use
- Input the password, set Memory to 19456, Iterations to 3, Parallelism to 1, and click generate.
- Example Config
-
Password: 'correct horse battery staple', Memory: 19456 KiB, Iterations: 3, Parallelism: 1, Salt Length: 16, Hash Length: 32 - Outcome
- A JSON response containing the algorithm 'argon2id' and the formatted PHC string starting with '$argon2id$'.
2. High-Memory Argon2id Hash Generation
Security Engineer- Background
- An engineer is configuring a high-security internal portal and wants to use a higher memory parameter to resist brute-force attacks.
- Problem
- Generating a hash with 65536 KiB memory and 4 iterations for a master password.
- How to Use
- Enter the master password, adjust the Memory field to 65536, set Iterations to 4, and generate the hash.
- Example Config
-
Password: 'super-secure-master-key', Memory: 65536 KiB, Iterations: 4, Parallelism: 2, Salt Length: 16, Hash Length: 32 - Outcome
- A PHC string encoded with the custom memory parameter (m=65536) and iteration count (t=4) for backend verification.
Try with Samples
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FAQ
What is Argon2id?
Argon2id is a hybrid version of the Argon2 hashing algorithm that provides resistance against both GPU side-channel attacks and memory-hard optimization attacks.
What is a PHC string format?
A PHC string is a standardized format for representing password hashes, containing the algorithm name, parameters (like memory and iterations), salt, and the hash itself in a single string.
What are the recommended OWASP settings for Argon2id?
OWASP recommends a minimum of 19,456 KiB of memory, 3 iterations, and a parallelism factor of 1.
Can I customize the salt length?
Yes, you can adjust the salt length between 8 and 64 bytes to meet your specific security requirements.
Is the hashing performed securely?
Yes, the hashing is computed locally in your browser, ensuring your plaintext passwords are never sent to a remote server.