Generation – Server‑side only, using the company’s private ECDSA key. The public key is embedded in the plug‑in binary (PEM format, compiled‑time constant).
Encryption – The entire JSON payload is encrypted with AES‑256‑GCM, using a per‑install symmetric key derived from the hardware‑bound device ID (via HKDF‑SHA256). The resulting ciphertext is stored in the file; the signature covers the plaintext before encryption, ensuring both authenticity and confidentiality. noteperformer crack patched
| 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 %). | Encryption – The entire JSON payload is encrypted
| 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 | | Goal | Success Metric | |------|----------------| |
Total: ~13 weeks (≈ 3 months)
| 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”. |
+-------------------+ +-------------------+ +-------------------+
| Host DAW (VST/AU) | --> | NotePerformer Core| --> | Audio Engine |
+-------------------+ +-------------------+ +-------------------+
|
v
+-------------------+
| License Manager |
+-------------------+
| - Load/Decrypt |
| - Verify Sig |
| - Expiry Check |
+-------------------+
|
v
+-------------------+
| Integrity Guard |
+-------------------+
| - Hash Catalog |
| - Runtime Verify |
+-------------------+
| Included | Excluded | |----------|----------| | • All native plug‑in formats (VST3, AU, AAX) | • Third‑party plug‑ins that merely use NotePerformer as a sound source | | • Windows (x64) and macOS (ARM64 & x86_64) binaries | • Legacy 32‑bit Windows builds (EOL) | | • License‑file generation, validation, and renewal services | • UI redesign (outside of error dialogs) | | • Automatic migration utility for existing users | • New feature development unrelated to security |