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Update CLAUDE.md with v0.5.2 session history

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Marco Grätsch
2026-01-26 15:36:35 +01:00
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@@ -1293,3 +1293,51 @@ Bug fix release improving admin UI usability for version management and license
- Created release package: `releases/wc-licensed-product-0.5.1.zip` (863 KB)
- SHA256: `a489f0b8cfcd7d5d9b2021b7ff581b9f1a56468dfde87bbb06bb4555d11f7556`
- Tagged as `v0.5.1` and pushed to `main` branch
### 2026-01-26 - Version 0.5.2 - Per-License Customer Secrets
**Overview:**
Security enhancement release adding per-license customer secrets for API response verification. Each customer now receives a unique secret derived from their license key, eliminating the need to share a global server secret.
**Implemented:**
- Per-license secret derivation using HKDF-like approach
- Customer account UI showing API verification secret with collapsible section
- Copy-to-clipboard functionality for customer secrets
- Static helper methods in ResponseSigner for secret derivation
**New methods in ResponseSigner:**
- `deriveCustomerSecret()` - Static method to derive customer secret from license key and server secret
- `getCustomerSecretForLicense()` - Static method to get customer secret using configured server secret
- `isSigningEnabled()` - Static method to check if response signing is configured
**Modified files:**
- `src/Api/ResponseSigner.php` - Added static methods for customer secret derivation
- `src/Frontend/AccountController.php` - Added `signing_enabled` and `customer_secret` to template data
- `templates/frontend/licenses.html.twig` - Added collapsible secret section with toggle and copy button
- `assets/css/frontend.css` - Added styles for `.license-row-secret`, `.secret-toggle`, `.secret-content`
- `assets/js/frontend.js` - Added `toggleSecret()` and `copySecret()` event handlers
- `docs/server-implementation.md` - Added documentation for per-license secrets
**Technical notes:**
- Secret derivation uses HKDF-like approach: `HMAC-SHA256(HMAC-SHA256(license_key, server_secret) + "\x01", server_secret)`
- Each license gets a unique 64-character hex secret
- Secrets are only shown when `WC_LICENSE_SERVER_SECRET` is configured
- Collapsible UI prevents accidental secret exposure
- If server secret is rotated, all customer secrets change automatically
**Security improvement:**
- Customers no longer need access to the master `WC_LICENSE_SERVER_SECRET`
- If one customer's secret is leaked, other customers are not affected
- Each license key derives its own unique verification secret
**Release v0.5.2:**
- Created release package: `releases/wc-licensed-product-0.5.2.zip` (845 KB)
- SHA256: `2d61a78ac5ba0f1d115a6401e6dded5b872b18f5530027c371604cbd18e9e27c`
- Tagged as `v0.5.2` and pushed to `main` branch