| Category | Requirement |
|----------|-------------|
| Performance | Additional cryptographic operations must not increase plug‑in load time beyond 150 ms on a typical 2022 laptop (Intel i5‑12400 / Apple M2). |
| Security | Use FIPS‑140‑2 compliant primitives: ECDSA‑P256, AES‑256‑GCM, SHA‑256, HKDF‑SHA256. |
| Compatibility | Must support macOS Gatekeeper and Windows Defender SmartScreen without false positives. |
| Reliability | The watchdog thread must be tolerant of occasional timing delays (± 200 ms). |
| Maintainability | All security‑related code lives in src/security/ with unit tests ≥ 90 % coverage. |
| Documentation | Updated user guide, FAQ, and release notes covering “What to do if you see a LicenseError”. |
| # | Symptom | Root Cause |
|---|---------|------------|
| 1 | Users can launch a fully functional copy of NotePerformer without a valid license by using a patched DLL or modifying the activation file. | License validation logic relied on a simple hash comparison and stored the activation key in an easily reversible plaintext file (np_license.dat). |
| 2 | The activation routine loads the license file before any cryptographic verification, allowing an attacker to replace the file with a forged one. | Lack of signed verification and missing anti‑tamper checks. |
| 3 | The plug‑in’s native host (e.g., VST, AU) does not re‑authenticate on each load, so a cracked instance stays active across DAW sessions. | License state cached in a global static variable without periodic re‑validation. |
| 4 | No detection or logging of tampering attempts, making forensic analysis impossible. | Absence of secure event logging and telemetry for license integrity failures. | noteperformer crack patched
These weaknesses expose the product to revenue loss, brand damage, and potential downstream security risks (e.g., malicious code injection via modified DLLs). | # | Symptom | Root Cause |
| Goal | Success Metric |
|------|----------------|
| G1 – Eliminate the activation bypass | All known cracking methods (DLL patch, license‑file replacement, memory‑patch) are blocked; unauthorized instances terminate with an error. |
| G2 – Harden the licensing workflow | License files are signed, encrypted, and validated using a modern asymmetric algorithm (ECDSA‑P256). |
| G3 – Add runtime integrity verification | Every plug‑in load triggers an integrity check of the core binary and associated DLLs; any mismatch triggers safe‑mode shutdown. |
| G4 – Provide clear user feedback | Error dialogs include a unique error code and a link to the support portal; logging is written to %AppData%\NotePerformer\Logs. |
| G5 – Preserve existing legitimate installations | Users with a valid, unmodified license can upgrade without re‑registration; migration tool automatically converts old np_license.dat to the new signed format. |
| G6 – Maintain audio performance | No measurable latency increase (> 2 ms) or CPU overhead (> 3 %). | | Goal | Success Metric | |------|----------------| |
| Phase | Milestones | Owner | Estimated Effort |
|-------|------------|-------|------------------|
| A – Research & Design | Threat model review, cryptography library selection (libsodium), design approval | Security Lead | 2 weeks |
| B – Core Development | Implement LicenseManager, IntegrityGuard, integrate watchdog | Core Dev Team | 4 weeks |
| C – Migration Tool | Build and test np_migrate, server API changes | DevOps + Backend | 2 weeks |
| D – QA & Testing | Unit tests, fuzz testing of license parser, performance benchmarking, regression testing on all supported DAWs | QA Team | 3 weeks |
| E – Documentation | Update user manual, release notes, FAQ, create support scripts | Technical Writer | 1 week |
| F – Release Prep | Build installers (NSIS, pkg), code signing, notarization, beta distribution to internal users | Release Engineer | 1 week |
| G – Post‑Release Monitoring | Collect telemetry, monitor support tickets, issue hot‑fix if needed | Support & Security | Ongoing |
Total: ~13 weeks (≈ 3 months)