Parallel Activation Key (HD)

signature = rsa_sign(key_data, private_key) license_key = base32_encode(key_data + signature)

key_data = "product": "MyApp_Pro", "max_parallel": 10, "expiry": "2026-12-31", "nonce": random_bytes(8) parallel activation key

def activate(license_key, machine_id): data = decode(license_key) if not rsa_verify(data.signature): return "INVALID_KEY" payload = "key_hash": hash(license_key), "machine_id": machine_id, "timestamp": now() response = http_post("/api/activate", payload) if response

1. Definition & Core Concept A Parallel Activation Key is a software licensing mechanism that allows a single product key to activate multiple independent instances of a software product concurrently (in parallel). Unlike a traditional single‑use key (which ties activation to one device or user) or a concurrent floating license (which checks out/in a license from a central server in real time), a parallel activation key is pre‑authorized to simultaneously unlock the software on a predetermined number of machines or environments. response = http_post("/api/activate"

response = http_post("/api/activate", payload) if response.active_count <= data.max_parallel: save_activation_token(response.token) return "ACTIVATED" else: return "PARALLEL_LIMIT_REACHED"