argon2id

The argon2id algorithm uses the memory-hard Argon2 key derivation function. It uses a large, fixed memory region to make brute-force computation expensive. The implementation uses the Rust argon2 crate.

thresholds:
  - name: moderate-suspicion
    expression:
      all:
        - weight >= 10
        - weight < 20
    action: CHALLENGE
    challenge:
      algorithm: argon2id
      difficulty: 6

See thresholds for rules based on request weight.