Argus

Argon2 password hashing library for Gleam, based on the reference C implementation.

This library uses another Pevensie project, jargon, to provide the underlying NIF.

It currently only supports Gleam’s Erlang backend.

Example

gleam add argus

import argus

pub fn main() {
  // Hash a password using the recommended settings for Argon2id.
  let assert Ok(hashes) =
    argus.hasher()
    |> argus.hash("password", gen_salt())

  // Hash a password with custom settings and a custom salt.
  let assert Ok(hashes) =
    argus.hasher()
    |> argus.algorithm(argus.Argon2id)
    |> argus.time_cost(3)
    |> argus.memory_cost(12228) // 12 mebibytes
    |> argus.parallelism(1)
    |> argus.hash_length(32)
    |> argus.hash("password", "custom_salt")

  // Verify a password.
  let assert Ok(True) = argus.verify(hashes.encoded_hash, "password")
}

More information can be found in the documentation.

Why ‘Argus’?

Argus was the builder of the Argo ship and was one of the Argonauts.