Argon2id Password Hash Generator
Generates Argon2id hashes with bounded memory, iterations, and parallelism.
About this argon2id password hash generator
Generates Argon2id hashes with bounded memory, iterations, and parallelism Runs entirely in-memory using Web Crypto primitives to keep sensitive tokens, certificates, and cryptographic keys secure from third-party interception.
Encoding & cryptographic principles
Runs the page's local Argon2id password-hash implementation with the supplied supported parameters and returns the derived result. It is a browser utility, not a complete production password-storage system.
Worked verification example
Scenario: Generate an Argon2id hash with explicit bounded parameters.
Sample input:
Processing: Uses Argon2id only; memoryKiB is clamped to 8192–65536, iterations to 1–10, parallelism to 1–4, and salt must contain at least eight UTF-8 bytes. The fixed salt is an example, not a production salt.
Illustrative output:
Security parameters & input constraints
Salt must contain at least eight UTF-8 bytes. Finite safe integer parameters are clamped to memoryKiB 8192–65536, iterations 1–10 and parallelism 1–4. This does not verify passwords, store credentials or offer Argon2i/Argon2d.
Cryptographic digests, encoded strings, and signatures generated by Argon2id Password Hash Generator should be verified against target authentication systems before production use.
Client-side Web Crypto boundary
Key derivation, hashing, and encoding in Argon2id Password Hash Generator execute in local memory using Web Crypto APIs without remote socket transmission.
Cryptographic specifications & RFC standards
Technical specifications and cryptographic RFC standards governing algorithms and key representations:
Argon2id Password Hash Generator verification · Audit standards
How to use it
- Enter JSON with password, salt and optional memoryKiB, iterations and parallelism.
- Run Argon2id locally and receive a 32-byte encoded password hash.
- Read the effective clamped parameters and encoded $argon2id result in JSON.
Frequently asked questions
Which Argon2id parameters are used?+
Missing, `null`, or blank `memoryKiB`, `iterations`, and `parallelism` are 65536, 3, and 1. Supplied values must be finite safe integers, then are limited to 8192–65536 KiB, 1–10, and 1–4. An explicit empty `password` remains empty.
How can I run a reproducible Argon2id example?+
Enter `{ "password": "abc", "salt": "12345678", "memoryKiB": 8192, "iterations": 1, "parallelism": 1 }`. The returned `hash` starts with `$argon2id$v=19$m=8192,t=1,p=1$`.
When is `salt` rejected?+
An explicit empty `salt` is rejected before hashing. A non-empty salt is passed to Argon2, which may enforce its own minimum length; for example, four bytes fail there.
Is this ready for production passwords?+
No. It demonstrates local hashing. Production use needs unique securely stored salts, selected parameters, account controls, migration planning, and rate limits.