--- phase: 04-security plan: 01 subsystem: auth tags: [jwt, ed25519, hmac-sha256, nimbus-jose-jwt, spring-security, bootstrap-token] # Dependency graph requires: - phase: 01-ingestion provides: "Maven multi-module structure, Spring Boot app scaffold, application.yml patterns" - phase: 03-agent-registry provides: "Agent registration flow, AgentRegistryService, SSE connection manager" provides: - "JwtService interface and HMAC-SHA256 implementation for access/refresh token lifecycle" - "Ed25519SigningService interface and JDK 17 implementation for payload signing" - "BootstrapTokenValidator with constant-time comparison and dual-token rotation" - "SecurityProperties configuration binding with env var mapping" - "TestSecurityConfig permit-all for existing test compatibility" affects: [04-02, 04-03] # Tech tracking tech-stack: added: [nimbus-jose-jwt 9.47, spring-boot-starter-security, spring-security-test] patterns: [ephemeral HMAC secret per server instance, ephemeral Ed25519 keypair per startup, constant-time token comparison, InitializingBean fail-fast validation] key-files: created: - cameleer-server-core/src/main/java/com/cameleer/server/core/security/JwtService.java - cameleer-server-core/src/main/java/com/cameleer/server/core/security/Ed25519SigningService.java - cameleer-server-core/src/main/java/com/cameleer/server/core/security/InvalidTokenException.java - cameleer-server-app/src/main/java/com/cameleer/server/app/security/JwtServiceImpl.java - cameleer-server-app/src/main/java/com/cameleer/server/app/security/Ed25519SigningServiceImpl.java - cameleer-server-app/src/main/java/com/cameleer/server/app/security/BootstrapTokenValidator.java - cameleer-server-app/src/main/java/com/cameleer/server/app/security/SecurityProperties.java - cameleer-server-app/src/main/java/com/cameleer/server/app/security/SecurityBeanConfig.java - cameleer-server-app/src/test/java/com/cameleer/server/app/security/TestSecurityConfig.java - cameleer-server-app/src/test/java/com/cameleer/server/app/security/JwtServiceTest.java - cameleer-server-app/src/test/java/com/cameleer/server/app/security/Ed25519SigningServiceTest.java - cameleer-server-app/src/test/java/com/cameleer/server/app/security/BootstrapTokenValidatorTest.java modified: - cameleer-server-app/pom.xml - cameleer-server-app/src/main/resources/application.yml - cameleer-server-app/src/test/resources/application-test.yml key-decisions: - "HMAC-SHA256 with ephemeral 256-bit secret for JWT signing (simpler than Ed25519 for tokens, Ed25519 reserved for config signing)" - "Nimbus JOSE+JWT chosen for JWT library (mature, well-maintained, explicit API)" - "JDK 17 built-in Ed25519 KeyPairGenerator (no Bouncy Castle dependency needed)" - "TestSecurityConfig as @Configuration in test sources for automatic component scanning by @SpringBootTest" - "InitializingBean pattern for fail-fast bootstrap token validation on startup" patterns-established: - "Core module interfaces (JwtService, Ed25519SigningService) with app module implementations" - "SecurityProperties @ConfigurationProperties with env var mapping via ${ENV_VAR:default}" - "SecurityBeanConfig wires all security beans with explicit @Bean methods" requirements-completed: [SECU-03, SECU-05] # Metrics duration: 12min completed: 2026-03-11 --- # Phase 4 Plan 01: Security Service Foundation Summary **HMAC-SHA256 JWT service with access/refresh token lifecycle, JDK 17 Ed25519 signing for config payloads, and constant-time bootstrap token validation with dual-token rotation** ## Performance - **Duration:** 12 min - **Started:** 2026-03-11T18:56:17Z - **Completed:** 2026-03-11T19:08:55Z - **Tasks:** 1 (TDD: RED + GREEN) - **Files modified:** 15 ## Accomplishments - JwtService creates and validates access JWTs (1h expiry) and refresh JWTs (7d expiry) with agentId, group, and type claims - Ed25519SigningService generates ephemeral keypair, signs payloads with verifiable signatures using JDK 17 built-in crypto - BootstrapTokenValidator uses MessageDigest.isEqual for constant-time comparison with dual-token rotation support - Server fails fast on startup if CAMELEER_AUTH_TOKEN env var is not set - All 71 tests pass (18 new security + 29 existing unit + 24 existing integration) with TestSecurityConfig permit-all ## Task Commits Each task was committed atomically (TDD flow): 1. **Task 1 RED: Failing tests for security services** - `51a0270` (test) 2. **Task 1 GREEN: Implement security service foundation** - `ac9e8ae` (feat) _No REFACTOR commit needed -- implementations are clean and minimal._ ## Files Created/Modified - `cameleer-server-core/.../security/JwtService.java` - JWT service interface with create/validate methods - `cameleer-server-core/.../security/Ed25519SigningService.java` - Ed25519 signing interface with sign/getPublicKeyBase64 - `cameleer-server-core/.../security/InvalidTokenException.java` - Runtime exception for invalid/expired/wrong-type tokens - `cameleer-server-app/.../security/JwtServiceImpl.java` - Nimbus JOSE+JWT HMAC-SHA256 implementation - `cameleer-server-app/.../security/Ed25519SigningServiceImpl.java` - JDK 17 Ed25519 KeyPairGenerator implementation - `cameleer-server-app/.../security/BootstrapTokenValidator.java` - Constant-time bootstrap token validation - `cameleer-server-app/.../security/SecurityProperties.java` - Config properties for token expiry and bootstrap tokens - `cameleer-server-app/.../security/SecurityBeanConfig.java` - Bean wiring with fail-fast startup validation - `cameleer-server-app/.../security/TestSecurityConfig.java` - Temporary permit-all for existing test compatibility - `cameleer-server-app/pom.xml` - Added nimbus-jose-jwt, spring-boot-starter-security, spring-security-test - `cameleer-server-app/.../application.yml` - Security config section with env var mapping - `cameleer-server-app/.../application-test.yml` - Test bootstrap token values - `cameleer-server-app/.../security/JwtServiceTest.java` - 7 unit tests for JWT creation/validation - `cameleer-server-app/.../security/Ed25519SigningServiceTest.java` - 5 unit tests for signing/verification - `cameleer-server-app/.../security/BootstrapTokenValidatorTest.java` - 6 unit tests for token matching ## Decisions Made - **HMAC-SHA256 for JWT signing:** Simpler than using Ed25519 for tokens; ephemeral 256-bit secret generated per server instance. Ed25519 reserved for config/command payload signing where agents need the public key. - **Nimbus JOSE+JWT:** Mature library with explicit MACSigner/MACVerifier API. Chose explicit version 9.47 since it may not be transitively available without spring-boot-starter-oauth2-resource-server. - **JDK 17 built-in Ed25519:** No external crypto library needed -- `KeyPairGenerator.getInstance("Ed25519")` available since JDK 15. - **@Configuration (not @TestConfiguration) for TestSecurityConfig:** Ensures automatic component scanning by @SpringBootTest without requiring @Import on every IT class. - **InitializingBean for fail-fast:** Validates CAMELEER_AUTH_TOKEN is set before any request processing begins. ## Deviations from Plan None - plan executed exactly as written. ## Issues Encountered None. ## User Setup Required None - no external service configuration required. ## Next Phase Readiness - Security primitives are ready for Plan 02 (Spring Security filter chain, JWT auth filter, registration/refresh integration) - JwtService, Ed25519SigningService, and BootstrapTokenValidator are all wired as Spring beans - TestSecurityConfig will be replaced by real SecurityFilterChain in Plan 02 - Plan 03 will integrate Ed25519 signing into SSE command push ## Self-Check: PASSED - All 12 created files verified present on disk - Both commits (51a0270, ac9e8ae) verified in git log - Full `mvn clean verify` passed: 71 tests, 0 failures --- *Phase: 04-security* *Completed: 2026-03-11*