feat: PR-7 - Hardening & cleanups (Issue #50) #67
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- Add comprehensive security documentation to README - Key hierarchy explanation (KEK, DEK, idx_key) - Encryption architecture details - Security guarantees and known limitations (FTS leakage, blind index frequency) - Operational security best practices - Key rotation documentation with command examples - Implement security hardening tests (7 new tests, 46 assertions) - No plaintext in database (encrypted fields, blind indexes, wrapped keys) - No plaintext in logs (creation, updates, exceptions) - API responses do not expose sensitive fields - All 114 tests passing (332 assertions) - PHPStan Level 9 clean - Pint PSR-12 compliant - TDD approach followed Closes #50 (PR-7)
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Pull Request Overview
This PR adds comprehensive security hardening tests and detailed encryption architecture documentation for SecPal's multi-tenant envelope encryption system.
- Verifies encrypted fields and blind indexes never contain plaintext in the database
- Ensures sensitive PII is not exposed in application logs or exception messages
- Confirms API responses properly hide encrypted fields and indexes
Reviewed Changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| tests/Feature/SecurityHardeningTest.php | New test suite verifying encryption, logging, and API serialization security properties |
| README.md | Added key rotation commands, encryption architecture details, and security considerations documentation |
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Summary
Completes Issue #50 PR-7: Final hardening and cleanups with comprehensive security documentation and tests to ensure no PII leakage.
This is the final PR of the Issue #50 multi-tenant encryption epic.
Changes
📚 Comprehensive Security Documentation
Enhanced README with production-grade security documentation:
Encryption Architecture:
Security Guarantees:
Known Limitations:
note_tsvcontains plaintext tokens)Key Rotation:
keys:rotate-kek,keys:rotate-dek,idx:rebuild)🔐 Security Hardening Tests
New test suite:
SecurityHardeningTest.php(7 tests, 46 assertions)No Plaintext in Database:
No Plaintext in Logs:
API Response Security:
*_encand*_idxfields📊 Quality Metrics
Issue #50 Completion
This PR completes the entire Issue #50 implementation:
.githubDRY & Preflight (implicit)All acceptance criteria from Issue #50 met:
Related
Checklist
🎉 Issue #50 Epic Complete! The SecPal API now has production-grade multi-tenant envelope encryption with comprehensive security documentation and test coverage.