challenge 0.1.0

A lightweight CLI for ALTCHA Proof-of-Work v2 challenges.
Documentation
{
  "username": "alice",
  "password": "user-password-here",
  "altcha": {
    "challenge": {
      "parameters": {
        "algorithm": "PBKDF2/SHA-256",
        "cost": 5000,
        "expiresAt": 1791916800,
        "keyLength": 32,
        "keyPrefix": "00",
        "nonce": "9f7a4c1e2b8d43a6a7c9941e8f2d0b3c",
        "salt": "b42f7b0c18d44f12ab09e6a721bb2a91",
        "data": {
          "action": "register"
        }
      },
      "signature": "7b6d7e0a9e89b1e6bbf0cb3f3a8a1d8dfb0e0dbb8120f8e4ecf2cf9d93a62b17"
    },
    "solution": {
      "counter": 8241,
      "derivedKey": "00f4a9cc3d93b0e45cf6c0d86d35e3f119c7bb77b07fb0e5fd7c51e4f0c733aa",
      "time": 418.73
    }
  }
}