# AuthKit - Comprehensive Project Plan
**Document ID**: PLAN-AUTHKIT-001
**Version**: 1.0.0
**Created**: 2026-04-05
**Status**: Draft
**Project Owner**: Phenotype Security Team
**Review Cycle**: Monthly
---
## 1. Project Overview & Objectives
### 1.1 Vision Statement
AuthKit is Phenotype's unified authentication and authorization framework designed to provide secure, scalable identity management across all Phenotype ecosystem applications. It implements a multi-language, multi-protocol approach supporting OAuth 2.0, OIDC, SAML, and custom authentication schemes with consistent APIs across Rust, Python, TypeScript, and Go implementations.
### 1.2 Mission Statement
To provide developers with a battle-tested, enterprise-grade authentication solution that seamlessly integrates with the Phenotype ecosystem while maintaining flexibility for custom implementations and third-party integrations.
### 1.3 Core Objectives
| OBJ-001 | Implement unified auth across all languages | 100% API parity across Rust/TS/Python/Go | P0 |
| OBJ-002 | Support modern authentication protocols | OAuth 2.1, OIDC 1.0, SAML 2.0 compliance | P0 |
| OBJ-003 | Provide seamless WorkOS integration | Complete widget and API integration | P0 |
| OBJ-004 | Enable custom authentication flows | Pluggable flow architecture | P1 |
| OBJ-005 | Support enterprise SSO requirements | MFA, RBAC, audit logging | P1 |
| OBJ-006 | Maintain security compliance | SOC 2, ISO 27001 alignment | P1 |
| OBJ-007 | Provide developer-friendly APIs | <5 min setup time for new projects | P2 |
| OBJ-008 | Enable scalable deployment | Support 1M+ concurrent sessions | P1 |
### 1.4 Problem Statement
Current authentication implementations across Phenotype projects are fragmented:
- Multiple auth libraries with inconsistent APIs
- Duplicated security logic across services
- Inconsistent session management
- Varying MFA implementations
- Difficult to audit and maintain
- No centralized identity provider
### 1.5 Solution Approach
AuthKit provides a unified authentication layer with:
- **Language-Specific SDKs**: Native implementations in Rust, TypeScript, Python, and Go
- **Protocol Support**: OAuth 2.0, OIDC, SAML 2.0, WebAuthn/FIDO2
- **Integration Layer**: Pre-built integrations for WorkOS, Auth0, Okta
- **Policy Engine**: Rule-based access control with DSL
- **Session Management**: Distributed session store with Redis/PostgreSQL backends
- **Audit System**: Comprehensive security event logging
### 1.6 Target Users
1. **Application Developers**: Building Phenotype ecosystem applications
2. **DevOps Engineers**: Deploying and configuring auth infrastructure
3. **Security Teams**: Auditing and managing access policies
4. **End Users**: Authenticating to Phenotype applications
5. **Enterprise Customers**: Requiring SSO and compliance features
### 1.7 Business Value
- **Reduced Development Time**: 60% faster auth implementation
- **Improved Security**: Centralized security updates and patches
- **Compliance Ready**: Built-in audit trails and policy enforcement
- **Scalable Architecture**: Supports growth from startup to enterprise
- **Cost Reduction**: Single auth solution vs multiple vendor solutions
---
## 2. Architecture Strategy
### 2.1 High-Level Architecture
```
┌─────────────────────────────────────────────────────────────────┐
│ AuthKit Ecosystem │
├─────────────────────────────────────────────────────────────────┤
│ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ │
│ │ AuthKit │ │ AuthKit │ │ AuthKit │ │
│ │ Rust SDK │ │ TS SDK │ │ Python SDK │ │
│ │ (Core) │ │ (Web/Node) │ │ (FastAPI) │ │
│ └──────┬──────┘ └──────┬──────┘ └──────┬──────┘ │
│ └──────────────────┼──────────────────┘ │
│ │ │
│ ┌─────────┴─────────┐ │
│ │ AuthKit Core │ │
│ │ (Rust Backend) │ │
│ └─────────┬─────────┘ │
│ ┌───────────────────┼───────────────────┐ │
│ │ │ │ │
│ ┌──────▼──────┐ ┌──────▼──────┐ ┌──────▼──────┐ │
│ │ Protocol │ │ Policy │ │ Session │ │
│ │ Handlers │ │ Engine │ │ Manager │ │
│ │ │ │ │ │ │ │
│ │ OAuth 2.0 │ │ RBAC │ │ Redis │ │
│ │ OIDC │ │ ABAC │ │ PostgreSQL │ │
│ │ SAML │ │ Custom DSL │ │ Memory │ │
│ └─────────────┘ └─────────────┘ └─────────────┘ │
│ │
└─────────────────────────────────────────────────────────────────┘
```
### 2.2 Component Architecture
#### 2.2.1 Core Components
| authkit-core | Rust | Core auth logic, crypto | Library/Service |
| authkit-rust | Rust | Rust SDK and bindings | Library |
| authkit-python | Python | Python SDK and FastAPI | Library |
| authkit-typescript | TypeScript | TS/JS SDK for web/Node | Library |
| authkit-go | Go | Go SDK and middleware | Library |
| authkit-server | Rust | Standalone auth service | Service |
| authkit-admin | TypeScript | Admin dashboard | Web App |
#### 2.2.2 Protocol Support Matrix
| OAuth 2.0 | Implemented | ✅ | ✅ | ✅ | ✅ |
| OIDC 1.0 | Implemented | ✅ | ✅ | ✅ | ✅ |
| SAML 2.0 | Planned | 🔄 | 🔄 | 🔄 | 🔄 |
| WebAuthn | Planned | 🔄 | 🔄 | 🔄 | 🔄 |
| LDAP | Planned | 📋 | 📋 | 📋 | 📋 |
| Custom JWT | Implemented | ✅ | ✅ | ✅ | ✅ |
### 2.3 Data Flow Architecture
#### 2.3.1 Authentication Flow
```
1. Client Request → 2. SDK Validation → 3. Protocol Handler → 4. Identity Provider
↓
5. Token Generation ← 6. Session Creation ← 7. Policy Check ← 8. User Lookup
```
#### 2.3.2 Authorization Flow
```
1. Resource Request → 2. Token Extraction → 3. Validation → 4. Policy Evaluation
↓
5. Access Grant/Deny ← 6. Audit Log ← 7. Permission Resolution
```
### 2.4 Security Architecture
#### 2.4.1 Threat Model
| Threat | Likelihood | Impact | Mitigation |
|--------|------------|--------|------------|
| Token theft | Medium | High | Short-lived tokens, refresh rotation, binding |
| Session hijacking | Low | High | Secure cookies, device fingerprinting, IP binding |
| Brute force | Medium | Medium | Rate limiting, CAPTCHA, exponential backoff |
| CSRF attacks | Low | High | CSRF tokens, SameSite cookies, origin validation |
| XSS via tokens | Medium | High | HttpOnly cookies, CSP headers, input sanitization |
| Replay attacks | Low | High | Nonce validation, timestamp checks |
#### 2.4.2 Security Controls
- **Cryptography**: Ed25519 for signing, AES-256-GCM for encryption
- **Token Strategy**: Short-lived access tokens (15 min), long-lived refresh (7 days)
- **Session Security**: Device fingerprinting, IP geolocation checks
- **Transport Security**: TLS 1.3 mandatory, certificate pinning support
- **Storage Security**: Encrypted at rest, hashed passwords (Argon2id)
### 2.5 Integration Architecture
#### 2.5.1 External Integrations
| Provider | Integration Type | Status | Priority |
|----------|-------------------|--------|----------|
| WorkOS | Widgets + API | Implemented | P0 |
| Auth0 | API + SAML | Planned | P1 |
| Okta | OIDC + SCIM | Planned | P1 |
| Google | OAuth 2.0 | Implemented | P1 |
| GitHub | OAuth 2.0 | Implemented | P2 |
| Microsoft | OIDC + SAML | Planned | P2 |
#### 2.5.2 Internal Integrations
| System | Integration Point | Purpose |
|--------|---------------------|---------|
| phenotype-config | Configuration | Dynamic auth settings |
| phenotype-event-sourcing | Events | Auth audit trail |
| phenotype-policy-engine | Policies | Access control rules |
| phenotype-cache-adapter | Sessions | Distributed session store |
| phenotype-telemetry | Metrics | Auth performance monitoring |
### 2.6 Deployment Architecture
#### 2.6.1 Deployment Patterns
| Pattern | Use Case | Configuration |
|---------|----------|---------------|
| Embedded Library | Single app | Import SDK, no server |
| Sidecar Service | Microservices | AuthKit server + SDK |
| Centralized Gateway | Enterprise | AuthKit cluster + LB |
| Serverless Functions | Edge | Lambda/Cloud Functions |
#### 2.6.2 Infrastructure Requirements
```yaml
Production Cluster:
- 3+ authkit-server nodes (HA)
- Redis cluster (session storage)
- PostgreSQL (user/persistent data)
- Load balancer (round-robin)
- CDN (static assets for admin UI)
```
---
## 3. Implementation Phases
### 3.1 Phase 0: Foundation (MVP) - Weeks 1-6
#### 3.1.1 Goals
- Establish core Rust implementation
- Basic OAuth 2.0 and OIDC support
- WorkOS integration
- Python SDK foundation
- TypeScript SDK foundation
#### 3.1.2 Deliverables
| 1-2 | Core Rust library | Rust Team | Unit tests pass, crypto verified |
| 2-3 | OAuth 2.0 implementation | Auth Team | Authorization code flow working |
| 3-4 | OIDC implementation | Auth Team | ID token generation, claims |
| 4-5 | WorkOS integration | Integration Team | Widgets functional, SSO working |
| 5-6 | Python SDK | Python Team | FastAPI middleware working |
| 5-6 | TypeScript SDK | TS Team | Express middleware working |
#### 3.1.3 MVP Success Criteria
- [ ] OAuth 2.0 authorization code flow
- [ ] OIDC ID token generation
- [ ] WorkOS SSO widgets integrated
- [ ] Python FastAPI middleware functional
- [ ] TypeScript Express middleware functional
- [ ] Basic session management
- [ ] JWT token generation/validation
- [ ] 80% unit test coverage
### 3.2 Phase 1: Production Ready - Weeks 7-14
#### 3.2.1 Goals
- Production hardened implementation
- Multi-tenant support
- Advanced session management
- RBAC implementation
- Admin dashboard
- Go SDK
- SAML support begins
#### 3.2.2 Deliverables
| 7-8 | Multi-tenancy | Core Team | MVP complete |
| 8-9 | Redis session backend | Infra Team | Redis cluster ready |
| 9-10 | RBAC engine | Security Team | Policy engine integrated |
| 10-11 | Admin dashboard | Frontend Team | API stable |
| 11-12 | Go SDK | Go Team | Core API stable |
| 12-13 | SAML 2.0 (SP) | Auth Team | XML security libs |
| 13-14 | Production hardening | DevOps Team | Security audit |
#### 3.2.3 V1 Success Criteria
- [ ] Multi-tenant isolation verified
- [ ] Distributed sessions with Redis
- [ ] RBAC policy engine functional
- [ ] Admin dashboard for configuration
- [ ] Go SDK released
- [ ] SAML 2.0 Service Provider support
- [ ] Production deployment guide
- [ ] Security penetration testing passed
- [ ] Load testing: 10K RPS sustained
- [ ] 99.9% uptime target
### 3.3 Phase 2: Enterprise - Weeks 15-24
#### 3.3.1 Goals
- Enterprise SSO features
- Advanced MFA (WebAuthn, TOTP)
- SCIM provisioning
- Audit and compliance
- Advanced analytics
- Federation support
- Custom authentication flows
#### 3.3.2 Deliverables
| 15-16 | TOTP MFA | Security Team |
| 16-17 | WebAuthn/FIDO2 | Security Team |
| 17-18 | SCIM 2.0 | Integration Team |
| 18-19 | Audit logging | Compliance Team |
| 19-20 | Advanced analytics | Data Team |
| 20-21 | SAML IdP | Auth Team |
| 21-22 | Custom flows | Core Team |
| 22-23 | Federation | Integration Team |
| 23-24 | Enterprise docs | Docs Team |
#### 3.3.3 V2 Success Criteria
- [ ] TOTP MFA working
- [ ] WebAuthn/FIDO2 support
- [ ] SCIM user provisioning
- [ ] Complete audit trail
- [ ] Advanced analytics dashboard
- [ ] SAML Identity Provider
- [ ] Custom authentication DSL
- [ ] Federation between orgs
- [ ] Enterprise support SLA
- [ ] SOC 2 compliance documentation
---
## 4. Technical Stack Decisions
### 4.1 Core Technology Stack
#### 4.1.1 Backend (Rust Core)
| Language | Rust | 1.75+ | Performance, safety, WASM |
| Web Framework | Axum | 0.7+ | Async, modular, Tower ecosystem |
| Auth Protocols | oauth2 crate | 4.0+ | Standard OAuth/OIDC |
| Cryptography | ring | 0.17+ | Audited, performant |
| JWT | jsonwebtoken | 9.0+ | Standard JWT handling |
| Serialization | serde | 1.0+ | Ecosystem standard |
| Database | SQLx | 0.7+ | Compile-time checked SQL |
| Async Runtime | Tokio | 1.35+ | Industry standard |
#### 4.1.2 Python SDK
| Language | Python | 3.10+ | Modern Python features |
| Web Framework | FastAPI | 0.100+ | Async, OpenAPI, performance |
| HTTP Client | httpx | 0.25+ | Async HTTP |
| JWT | PyJWT | 2.8+ | Standard JWT |
| Crypto | cryptography | 41+ | Audited, comprehensive |
| Testing | pytest | 8.0+ | Standard testing |
#### 4.1.3 TypeScript SDK
| Language | TypeScript | 5.3+ | Latest features |
| Runtime | Node.js | 18+ | LTS, ESM support |
| Web Framework | Express/Fastify | 4.18+/4.0+ | Flexibility |
| Frontend | React | 18+ | Component library |
| JWT | jose | 5.0+ | Modern JWT library |
| Bundler | Rollup/Vite | Latest | ESM/CJS dual output |
#### 4.1.4 Go SDK
| Language | Go | 1.21+ | Latest features |
| Web Framework | Gin/Echo | Latest | Standard choices |
| JWT | golang-jwt | 5.0+ | Standard JWT |
| Crypto | Standard library | - | Go's strong crypto |
| OIDC | coreos/go-oidc | 3.0+ | Proven OIDC |
### 4.2 Infrastructure Stack
#### 4.2.1 Data Stores
| Primary DB | Users, clients, config | PostgreSQL 15+ | Primary + Replica |
| Session Cache | Active sessions | Redis 7+ | Cluster (6 nodes) |
| Token Cache | Revoked tokens | Redis 7+ | Shared with sessions |
| Event Store | Audit events | phenotype-event-sourcing | Integrated |
| Config | Dynamic settings | phenotype-config | Integrated |
#### 4.2.2 Deployment Infrastructure
| Container | Docker | Application packaging |
| Orchestration | Kubernetes | Container management |
| Service Mesh | Linkerd/Istio | mTLS, traffic management |
| Gateway | Traefik/NGINX | Edge routing |
| Secrets | Vault | Secret management |
### 4.3 Development Stack
#### 4.3.1 Development Tools
| VCS | Git + GitHub | Source control |
| CI/CD | GitHub Actions | Build, test, deploy |
| Linting | Clippy (Rust), Ruff (Py), ESLint (TS), golangci-lint | Code quality |
| Formatting | rustfmt, black, prettier, gofmt | Consistent style |
| Testing | cargo test, pytest, vitest, go test | Test execution |
| Docs | rustdoc, mkdocs, TypeDoc, pkgsite | Documentation |
| Security | cargo-audit, safety, npm audit, govulncheck | Vulnerability scanning |
### 4.4 Technology Decision Records
#### 4.4.1 Rust as Core Language
**Decision**: Rust for authkit-core and server
**Context**: Need high performance, memory safety, and small footprint for embedded and server deployments.
**Decision**: Use Rust for core implementation
**Consequences**:
- ✅ Memory safety without GC
- ✅ Excellent performance for crypto operations
- ✅ WebAssembly compatibility
- ✅ Strong type system prevents bugs
- ⚠️ Steeper learning curve for contributors
- ⚠️ Longer compile times
#### 4.4.2 Multi-Language SDKs
**Decision**: Native SDKs for Python, TypeScript, Go
**Context**: Phenotype ecosystem uses multiple languages; FFI has overhead and complexity.
**Decision**: Native implementations wrapping core HTTP API
**Consequences**:
- ✅ Idiomatic APIs for each language
- ✅ No FFI complexity
- ✅ Independent release cycles
- ⚠️ Code duplication for business logic
- ⚠️ More maintenance burden
#### 4.4.3 SQLx over ORM
**Decision**: SQLx for database access
**Context**: Need compile-time SQL verification without heavy ORM overhead.
**Decision**: Use SQLx with query files
**Consequences**:
- ✅ Compile-time SQL validation
- ✅ No runtime SQL errors
- ✅ Full SQL control for optimization
- ⚠️ More verbose than ORM
- ⚠️ Manual migration management
---
## 5. Risk Analysis & Mitigation
### 5.1 Risk Register
#### 5.1.1 Critical Risks (P0)
| R-001 | Security vulnerability in crypto | Low | Critical | High | External audit, established libraries, bug bounty |
| R-002 | Protocol implementation flaw | Medium | Critical | High | Test vectors from RFCs, third-party testing |
| R-003 | Session storage data loss | Low | Critical | High | Multi-region Redis, persistence, backups |
| R-004 | Token leakage/exposure | Medium | High | High | Security review, automated scanning, monitoring |
#### 5.1.2 High Risks (P1)
| R-005 | Performance degradation at scale | Medium | High | Medium | Load testing, caching strategy, profiling |
| R-006 | Multi-language SDK inconsistency | Medium | Medium | Medium | Shared test suites, specification compliance |
| R-007 | WorkOS API changes breaking integration | Low | High | Medium | Abstraction layer, integration tests |
| R-008 | Compliance requirement changes | Medium | Medium | Medium | Regular compliance reviews, flexible policies |
| R-009 | Key personnel departure | Medium | Medium | Medium | Documentation, pair programming, knowledge sharing |
#### 5.1.3 Medium Risks (P2)
| R-010 | Third-party library vulnerabilities | Medium | Medium | Low | Automated scanning, rapid patching |
| R-011 | Database migration failures | Low | Medium | Low | Migration tests, rollback procedures |
| R-012 | Cache stampede during peak load | Low | Medium | Low | Circuit breakers, rate limiting |
| R-013 | SAML XML parsing vulnerabilities | Low | High | Medium | Validated libraries, input sanitization |
### 5.2 Risk Mitigation Strategies
#### 5.2.1 Security Risk Mitigation
```
Layer 1: Prevention
- Secure coding training
- Automated security scanning
- Dependency auditing
- Code review requirements
Layer 2: Detection
- Security monitoring
- Anomaly detection
- Penetration testing
- Bug bounty program
Layer 3: Response
- Incident response plan
- Automated patching
- Rapid deployment pipeline
- Security advisory process
```
#### 5.2.2 Technical Risk Mitigation
- **Prototyping**: Build proof-of-concepts for risky features
- **Spikes**: Time-boxed investigations for unknowns
- **Monitoring**: Real-time performance and error tracking
- **Fallbacks**: Circuit breakers and graceful degradation
- **Testing**: Comprehensive test coverage including chaos testing
### 5.3 Contingency Plans
#### 5.3.1 Security Incident Response
1. **Detection**: Automated alerts + manual reporting
2. **Containment**: Immediate token revocation capability
3. **Investigation**: Forensic logging and audit trail analysis
4. **Remediation**: Patch deployment within 24 hours (critical)
5. **Communication**: Customer notification within 72 hours
#### 5.3.2 Performance Degradation Response
1. **Detection**: Automated monitoring thresholds
2. **Immediate**: Scale additional instances
3. **Short-term**: Enable additional caching layers
4. **Medium-term**: Code optimization and hotfix deployment
5. **Long-term**: Architecture review and scaling plan
---
## 6. Resource Requirements
### 6.1 Team Structure
#### 6.1.1 Core Team (Phase 0-1)
| Role | Count | Allocation | Skills Required |
|------|-------|------------|-----------------|
| Technical Lead | 1 | 100% | Rust, auth protocols, architecture |
| Rust Developer | 2 | 100% | Rust, async, crypto |
| Python Developer | 1 | 100% | Python, FastAPI, security |
| TypeScript Developer | 1 | 100% | TypeScript, Node.js, React |
| DevOps Engineer | 1 | 50% | Kubernetes, Terraform, CI/CD |
| Security Engineer | 1 | 50% | OAuth, OIDC, penetration testing |
| QA Engineer | 1 | 50% | Rust/Python/TS testing |
#### 6.1.2 Extended Team (Phase 2)
| Role | Count | Allocation | Skills Required |
|------|-------|------------|-----------------|
| Go Developer | 1 | 100% | Go, distributed systems |
| Frontend Developer | 1 | 100% | React, admin UIs |
| Compliance Engineer | 1 | 50% | SOC 2, ISO 27001 |
| Technical Writer | 1 | 100% | Developer documentation |
| Site Reliability Engineer | 1 | 50% | Production operations |
### 6.2 Infrastructure Resources
#### 6.2.1 Development Environment
| Resource | Specification | Quantity | Cost/Month |
|----------|--------------|----------|------------|
| Development VMs | 4 vCPU, 16 GB RAM | 8 | $400 |
| CI/CD Runners | GitHub Actions | Unlimited | $200 |
| Test Databases | PostgreSQL 15 | 4 | $100 |
| Test Cache | Redis 7 | 2 | $50 |
| Code Repositories | GitHub Pro | 1 org | $100 |
#### 6.2.2 Production Environment (Estimated)
| Resource | Specification | Quantity | Cost/Month |
|----------|--------------|----------|------------|
| Application Servers | 4 vCPU, 8 GB RAM | 6 | $600 |
| PostgreSQL Primary | 8 vCPU, 32 GB RAM | 1 | $400 |
| PostgreSQL Replica | 8 vCPU, 32 GB RAM | 2 | $800 |
| Redis Cluster | 4 vCPU, 16 GB RAM | 6 | $1,200 |
| Load Balancer | Application LB | 2 | $200 |
| Monitoring | Datadog/Grafana | - | $500 |
| Secrets Management | HashiCorp Vault | 1 | $200 |
| **Total** | | | **$3,900/mo** |
### 6.3 External Services
| Service | Purpose | Cost/Month |
|---------|---------|------------|
| WorkOS | SSO integration | $500 (estimate) |
| Auth0 (testing) | Comparison testing | $100 |
| AWS/GCP | Cloud infrastructure | Included above |
| Snyk | Security scanning | $200 |
| Bugsnag | Error tracking | $100 |
### 6.4 Training and Development
| Training | Attendees | Cost |
|----------|-----------|------|
| Rust Advanced | 3 developers | $3,000 |
| OAuth/OIDC Deep Dive | 4 developers | $4,000 |
| Security Training | All team | $5,000 |
| Conference Attendance | 2 developers | $6,000 |
### 6.5 Budget Summary
| Category | Phase 0 | Phase 1 | Phase 2 | Total |
|----------|---------|---------|---------|-------|
| Personnel | $180,000 | $240,000 | $120,000 | $540,000 |
| Infrastructure | $5,000 | $15,000 | $25,000 | $45,000 |
| External Services | $2,000 | $5,000 | $8,000 | $15,000 |
| Training | $8,000 | $5,000 | $3,000 | $16,000 |
| Contingency (15%) | $29,250 | $39,750 | $23,850 | $92,850 |
| **Total** | **$224,250** | **$304,750** | **$179,850** | **$708,850** |
---
## 7. Timeline & Milestones
### 7.1 Master Schedule
```
Week: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
|---- MVP ----|
|---- Production Ready ----|
|-- Enterprise --|
Core: [================]
OAuth: [========]
OIDC: [========]
WorkOS: [======]
Python SDK: [========]
TS SDK: [========]
Go SDK: [========]
RBAC: [========]
Admin UI: [============]
SAML: [============]
MFA: [========]
SCIM: [========]
Audit: [========]
```
### 7.2 Phase Milestones
#### 7.2.1 MVP Milestones (Weeks 1-6)
| M1.1 | Week 2 | Core library alpha | Rust Team | Tests passing, API stable |
| M1.2 | Week 4 | OAuth 2.0 complete | Auth Team | RFC 6749 compliant |
| M1.3 | Week 6 | MVP Release | TPM | All MVP criteria met |
#### 7.2.2 Production Milestones (Weeks 7-14)
| M2.1 | Week 9 | Multi-tenant support | Core Team | Tenant isolation verified |
| M2.2 | Week 11 | RBAC engine | Security Team | Policy evaluation <10ms |
| M2.3 | Week 13 | All SDKs released | Integration | Feature parity verified |
| M2.4 | Week 14 | V1.0 Release | TPM | Production hardened |
#### 7.2.3 Enterprise Milestones (Weeks 15-24)
| M3.1 | Week 17 | MFA complete | Security Team | TOTP + WebAuthn |
| M3.2 | Week 19 | SCIM support | Integration Team | User provisioning |
| M3.3 | Week 21 | SAML IdP | Auth Team | Enterprise SSO ready |
| M3.4 | Week 24 | V2.0 Release | TPM | Enterprise ready |
### 7.3 Dependency Graph
```
Core Library
├── OAuth 2.0
│ ├── OIDC
│ └── WorkOS Integration
│ ├── Python SDK
│ ├── TypeScript SDK
│ └── Go SDK (later)
├── Session Management
│ └── Distributed Cache
├── RBAC Engine
│ └── Admin Dashboard
└── SAML Support
├── SAML IdP
└── MFA
└── SCIM
```
### 7.4 Critical Path
The critical path runs through:
1. Core library development (Weeks 1-3)
2. OAuth 2.0 implementation (Weeks 3-4)
3. OIDC completion (Weeks 4-5)
4. WorkOS integration (Weeks 5-6)
5. SDK development (Weeks 6-8)
6. RBAC engine (Weeks 10-11)
7. Production hardening (Weeks 13-14)
Total critical path duration: 14 weeks for V1.
---
## 8. Dependencies & Blockers
### 8.1 External Dependencies
| WorkOS API | Service | Week 5 | Available | Low |
| PostgreSQL 15 | Infrastructure | Week 2 | Available | Low |
| Redis 7 | Infrastructure | Week 2 | Available | Low |
| Rust 1.75+ | Toolchain | Week 1 | Available | Low |
| oauth2 crate | Library | Week 3 | Available | Low |
| SAML libraries | Library | Week 13 | Available | Medium |
| WebAuthn libraries | Library | Week 16 | Available | Medium |
### 8.2 Internal Dependencies
| phenotype-config | Config team | Week 2 | In Progress | Medium |
| phenotype-event-sourcing | Core team | Week 4 | Available | Low |
| phenotype-cache-adapter | Core team | Week 8 | Available | Low |
| phenotype-policy-engine | Core team | Week 10 | In Progress | Medium |
| phenotype-telemetry | Observability | Week 12 | Available | Low |
### 8.3 Blocker Tracking
| B-001 | phenotype-policy-engine completion | Delays RBAC | Core Team | Week 9 | Monitoring |
| B-002 | WorkOS production access | Delays SSO testing | DevOps | Week 5 | In Progress |
| B-003 | Security audit scheduling | Delays V1 release | Security | Week 13 | Not Started |
| B-004 | SAML XML library evaluation | Delays SAML | Rust Team | Week 12 | In Progress |
### 8.4 Mitigation Strategies
#### 8.4.1 Dependency Risk Mitigation
1. **Library Dependencies**:
- Maintain fork/backup options for critical libraries
- Contribute to upstream when possible
- Internal implementation as fallback
2. **Service Dependencies**:
- Circuit breaker patterns for all external calls
- Graceful degradation when services unavailable
- Local caching for critical data
3. **Team Dependencies**:
- Cross-training on critical components
- Pair programming for knowledge transfer
- Documentation requirements before handoff
---
## 9. Testing Strategy
### 9.1 Testing Pyramid
```
┌─────────┐
│ E2E │ 5% - Full flows
├───────────┤
│ Integration│ 15% - Component interaction
├─────────────┤
│ Unit │ 80% - Function-level
└───────────────┘
```
### 9.2 Test Categories
#### 9.2.1 Unit Tests
| Core crypto | 95% | cargo test, property testing | P0 |
| Token handling | 95% | cargo test, mock time | P0 |
| Protocol parsing | 90% | cargo test, fuzzing | P0 |
| SDK clients | 85% | pytest, vitest, go test | P1 |
| Admin UI | 80% | React Testing Library | P2 |
#### 9.2.2 Integration Tests
| Database | SQLx queries | Test containers | CI |
| Cache | Redis operations | Testcontainers | CI |
| OAuth flows | Full authorization | Httpx/httpie | CI + Staging |
| OIDC flows | Token lifecycle | OIDC test suite | CI + Staging |
| SDK parity | Cross-language | Custom harness | CI |
#### 9.2.3 End-to-End Tests
| User registration | Full signup flow | Staging | Every PR |
| SSO login | WorkOS integration | Staging | Every PR |
| Token refresh | Refresh token rotation | Staging | Every PR |
| Session timeout | Automatic logout | Staging | Every PR |
| RBAC enforcement | Permission checks | Staging | Daily |
### 9.3 Security Testing
#### 9.3.1 Security Test Suite
| Dependency audit | cargo-audit, safety, npm audit | Daily | CI |
| Static analysis | clippy, bandit, eslint-security | Every PR | CI |
| Secret scanning | gitleaks, trufflehog | Every PR | CI |
| Fuzzing | cargo-fuzz | Weekly | Security |
| Penetration testing | Burp Suite, OWASP ZAP | Monthly | Security |
| Vulnerability scanning | Snyk, Trivy | Weekly | DevOps |
#### 9.3.2 Protocol Compliance Testing
| OAuth 2.0 | RFC 6749 test suite | Automated | Required |
| OIDC | OpenID certification tests | Manual + Auto | Required |
| SAML 2.0 | OASIS test cases | Automated | Required |
| JWT | JWT.io validation | Automated | Required |
### 9.4 Performance Testing
#### 9.4.1 Load Testing Scenarios
| Token generation | 10,000 | <50ms | 1 hour |
| Token validation | 50,000 | <10ms | 1 hour |
| Session creation | 5,000 | <100ms | 1 hour |
| Authorization check | 20,000 | <20ms | 1 hour |
| Concurrent logins | 1,000 | <500ms | 30 min |
#### 9.4.2 Chaos Testing
| Database failover | Primary DB failure | <30s |
| Cache failure | Redis cluster degradation | <10s (fallback) |
| Network partition | Split-brain scenario | Automatic recovery |
| High latency | 500ms+ latency injection | Graceful degradation |
### 9.5 Test Environments
| Local | Development | Synthetic | Developer |
| CI | Automated testing | Synthetic | CI system |
| Staging | Pre-prod validation | Anonymized production | Team |
| Production | Live monitoring | Real | SRE only |
---
## 10. Deployment Plan
### 10.1 Deployment Strategy
#### 10.1.1 Deployment Patterns
| Blue/Green | Major releases | Zero-downtime switch |
| Canary | Feature releases | 5% → 25% → 100% |
| Rolling | Patch releases | Gradual replacement |
| Feature Flags | New features | Config-based enablement |
### 10.2 Deployment Environments
#### 10.2.1 Environment Pipeline
```
Development → CI Testing → Staging → Production
↑ ↓
└────────── Monitoring ←───────────────┘
```
#### 10.2.2 Environment Specifications
| Development | Local/Docker | Single instance | Console logs |
| CI | GitHub Actions | Ephemeral | CI reports |
| Staging | Kubernetes | 2 replicas | Full stack |
| Production | Kubernetes | 6+ replicas | Full stack + PagerDuty |
### 10.3 Release Process
#### 10.3.1 Release Checklist
**Pre-Release**:
- [ ] All tests passing (unit, integration, E2E)
- [ ] Security scan clean
- [ ] Performance benchmarks met
- [ ] Documentation updated
- [ ] CHANGELOG.md updated
- [ ] Version bumped in all packages
**Release**:
- [ ] Tag created in Git
- [ ] Artifacts built and signed
- [ ] Staging deployment verified
- [ ] Canary deployment (if applicable)
- [ ] Production deployment
- [ ] Post-deployment verification
**Post-Release**:
- [ ] Monitoring dashboards reviewed
- [ ] Error rates verified normal
- [ ] Performance metrics checked
- [ ] Customer notifications sent (if applicable)
- [ ] Release notes published
#### 10.3.2 Release Schedule
| 0.1.0 | Alpha | Week 4 | Core + OAuth |
| 0.2.0 | Alpha | Week 6 | MVP Complete |
| 0.9.0 | Beta | Week 10 | Feature Complete |
| 1.0.0 | GA | Week 14 | Production Ready |
| 1.1.0 | Minor | Week 18 | Go SDK + Bug fixes |
| 2.0.0 | Major | Week 24 | Enterprise Features |
### 10.4 Database Migrations
#### 10.4.1 Migration Strategy
- **Versioned migrations**: Sequential, numbered migrations
- **Backward compatibility**: N-1 compatibility required
- **Rollback plan**: Every migration has corresponding rollback
- **Testing**: All migrations tested in CI with real data volumes
#### 10.4.2 Migration Process
1. **Development**: Create migration in `migrations/` directory
2. **Testing**: Run against test database with realistic data
3. **Code Review**: Database changes require security review
4. **Staging**: Deploy to staging first, verify
5. **Production**: Deploy during maintenance window (if needed)
6. **Verification**: Confirm migration success, rollback if issues
---
## 11. Rollback Procedures
### 11.1 Rollback Triggers
| Error rate spike | >1% error rate | Immediate |
| Latency degradation | P99 >500ms for 5 min | Immediate |
| Security incident | Confirmed vulnerability | Immediate |
| Data integrity issue | Detected corruption | Immediate |
| Feature regression | Critical functionality broken | <1 hour |
### 11.2 Rollback Procedures
#### 11.2.1 Application Rollback
```bash
# 1. Identify current version
kubectl get deployment authkit -o jsonpath='{.spec.template.spec.containers[0].image}'
# 2. Rollback to previous version
kubectl rollout undo deployment/authkit
# 3. Verify rollback
kubectl rollout status deployment/authkit
# 4. Verify health
curl https://auth.internal/health
# 5. Monitor metrics
# - Error rate
# - Response time
# - Token generation rate
```
#### 11.2.2 Database Rollback
```bash
# 1. Stop application writes
kubectl scale deployment authkit --replicas=0
# 2. Execute rollback migration
sqlx migrate run --source migrations/rollback
# 3. Verify database state
psql $DATABASE_URL -c "SELECT version FROM schema_migrations;"
# 4. Restore application
kubectl scale deployment authkit --replicas=6
```
#### 11.2.3 Configuration Rollback
```bash
# 1. Restore previous ConfigMap
kubectl apply -f config/authkit-config-previous.yaml
# 2. Restart deployment
kubectl rollout restart deployment/authkit
# 3. Verify configuration
kubectl exec -it deployment/authkit -- cat /app/config.yaml
```
### 11.3 Rollback Testing
| Application rollback | Monthly | SRE | Automated test |
| Database rollback | Quarterly | DBA | Staging test |
| Full disaster recovery | Annually | SRE + DBA | DR drill |
### 11.4 Incident Communication
#### 11.4.1 Communication Plan
| T+0 min | Page on-call | On-call engineer | PagerDuty |
| T+5 min | Acknowledge incident | Team | Slack #incidents |
| T+15 min | Status update | Stakeholders | Slack #status |
| T+30 min | Customer notification | Customers | Status page |
| T+resolution | Post-incident review | Team + Leadership | Meeting + Doc |
---
## 12. Post-Launch Monitoring
### 12.1 Monitoring Architecture
```
┌─────────────────────────────────────────────────────────────┐
│ Monitoring Stack │
├─────────────────────────────────────────────────────────────┤
│ Metrics │ Logs │ Tracing │
│ ─────────── │ ───────────── │ ───────────── │
│ Prometheus │ Loki │ Jaeger/Tempo │
│ Grafana │ Grafana │ Grafana │
│ AlertManager │ Alert rules │ Span analysis │
└─────────────────────────────────────────────────────────────┘
```
### 12.2 Key Performance Indicators (KPIs)
#### 12.2.1 Technical KPIs
| Token generation latency (p99) | <50ms | >100ms | >500ms | Performance |
| Token validation latency (p99) | <10ms | >50ms | >200ms | Performance |
| Authentication success rate | >99.9% | <99.5% | <99% | Reliability |
| Session creation rate | 1000/min | N/A | N/A | Capacity |
| Error rate | <0.1% | >1% | >5% | Reliability |
| Active sessions | 1M | 5M | 10M | Capacity |
#### 12.2.2 Business KPIs
| Time to first auth | <5 min | User survey | Adoption |
| Integration success | >90% | Completed integrations | Adoption |
| Developer NPS | >50 | Quarterly survey | Satisfaction |
| Support tickets | <5/week | Ticket system | Quality |
| Security incidents | 0 | Incident tracking | Security |
### 12.3 Alerting Rules
#### 12.3.1 Critical Alerts (P1)
| High error rate | >5% for 5 min | PagerDuty + Slack | RB-001 |
| Token signing failures | Any failure | PagerDuty + Slack | RB-002 |
| Database connection loss | >10s | PagerDuty + Phone | RB-003 |
| Cache unavailable | >30s | PagerDuty + Slack | RB-004 |
| Security anomaly | Detected | PagerDuty + Security | RB-005 |
#### 12.3.2 Warning Alerts (P2)
| Elevated latency | P99 >100ms for 10 min | Slack | RB-006 |
| High memory usage | >80% for 15 min | Slack | RB-007 |
| Database slow queries | >100ms avg | Slack | RB-008 |
| Cache eviction rate | >50% | Slack | RB-009 |
### 12.4 Log Management
#### 12.4.1 Log Levels
| ERROR | Failures requiring attention | 90 days | Token signing failed |
| WARN | Anomalies, near-limits | 30 days | Rate limit approaching |
| INFO | Significant events | 14 days | User authenticated |
| DEBUG | Detailed diagnostics | 7 days | Token claims generated |
| TRACE | Request-level detail | 1 day | Request headers logged |
#### 12.4.2 Security Audit Logs
| Login attempt | User, time, IP, success/fail | 7 years | AES-256 |
| Token issued | Token ID, user, scopes, expiry | 7 years | AES-256 |
| Permission check | Resource, action, result | 1 year | AES-256 |
| Policy change | Admin, change, timestamp | 7 years | AES-256 |
| Configuration change | Change details, admin | 7 years | AES-256 |
### 12.5 Continuous Improvement
#### 12.5.1 Review Cadence
| Performance review | Weekly | Team + SRE | Optimization backlog |
| Security review | Monthly | Security team | Security backlog |
| Architecture review | Monthly | Architects | ADRs |
| Incident review | Per incident | Involved team | Post-mortem |
| Roadmap review | Quarterly | Leadership | Updated roadmap |
#### 12.5.2 Success Metrics Review
| Response time | Weekly | Decreasing |
| Error rate | Weekly | Stable low |
| Test coverage | Sprint | Increasing |
| Security issues | Monthly | Zero |
| Documentation freshness | Monthly | Current |
---
## Appendices
### Appendix A: Glossary
| ABAC | Attribute-Based Access Control |
| IdP | Identity Provider |
| JWT | JSON Web Token |
| MFA | Multi-Factor Authentication |
| OIDC | OpenID Connect |
| RBAC | Role-Based Access Control |
| RP | Relying Party |
| SAML | Security Assertion Markup Language |
| SCIM | System for Cross-domain Identity Management |
| SP | Service Provider |
| SSO | Single Sign-On |
| TOTP | Time-based One-Time Password |
### Appendix B: References
| Architecture Decision Records | `/docs/adr/` | Design decisions |
| API Documentation | `/docs/api/` | API reference |
| Security Guide | `/docs/security/` | Security practices |
| Operations Runbook | `/docs/runbooks/` | Incident response |
| SDK Documentation | `/docs/sdks/` | Developer guides |
### Appendix C: Revision History
| 1.0.0 | 2026-04-05 | Planning Team | Initial plan creation |
---
**Document Control**
- **Status**: Draft
- **Next Review**: 2026-05-05
- **Document Owner**: AuthKit Technical Lead
- **Approval**: Pending