A 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.
To maintain an accurate count without real‑time central polling for every operation: parallel activation key
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" A is a software licensing mechanism that allows
The key is presented as a Base32/Base64 encoded string (e.g., PARK-5A8F-32D1-9E4C ). | Threat | Mitigation | |--------|-------------| | |
| Threat | Mitigation | |--------|-------------| | | Heartbeat + server‑side active count; blacklist excessive activation attempts from different IP ranges / machine IDs. | | Key brute‑forcing | Rate‑limit activation requests; use long keys (e.g., 25+ alphanumeric) with checksums. | | Offline cloning | Activation token includes machine‑specific binding (HWID). Token cannot be copied to another machine without re‑activation. | | Replay attacks | Each activation request includes a nonce and timestamp; server caches used nonces for a short time. | | Tampering with MaxParallel field | Sign the entire key; client verifies signature before sending to server. | | Heartbeat spoofing | Heartbeats are signed with a per‑instance client key derived during activation. |
When a user enters the key on a new machine: