# SPEC-013: Advanced Security

## Overview
Enterprise-grade security system with multiple authentication methods, TLS encryption, rate limiting, and comprehensive access control for production environments.

## Components

### Authentication Methods
- **Username/Password**: Primary authentication method with secure storage
- **X.509 Client Certificates**: Certificate-based authentication
- **LDAP Integration**: Enterprise directory service integration
- **OAuth/JWT**: Token-based authentication (if supported by RabbitMQ)
- **Multi-Factor Authentication**: Optional MFA support

### Encryption and Security
- **TLS/SSL**: End-to-end encryption for all connections
- **Certificate Management**: Automated certificate rotation and validation
- **Secure Credential Storage**: Encrypted storage of authentication credentials
- **Network Security**: VPN and firewall integration support

### Access Control
- **Role-Based Access Control (RBAC)**: Granular permission system
- **Virtual Host Isolation**: Per-vhost access control and isolation
- **User Management**: Create, update, delete user accounts
- **Permission Management**: Fine-grained permission control

### Rate Limiting and Abuse Prevention
- **Per-User Rate Limiting**: Configurable rate limits per user
- **Per-Tool Rate Limiting**: Rate limits for specific MCP tools
- **Abuse Detection**: Automated abuse detection and prevention
- **Temporary Blocks**: Automatic temporary blocking of abusive users

### Security Monitoring
- **Authentication Logging**: Comprehensive authentication event logging
- **Security Alerts**: Real-time security event alerts
- **Audit Trail**: Complete audit trail for all security events
- **Compliance Reporting**: Security compliance reporting and validation

### Internal Operations (Auto-generated from OpenAPI)
**OpenAPI-Driven**: Security operations derived from RabbitMQ Management API.

- `users.list`: GET /api/users - List all users (from OpenAPI)
- `users.get`: GET /api/users/{name} - Get user details (from OpenAPI)
- `users.create`: PUT /api/users/{name} - Create user (from OpenAPI)
- `users.delete`: DELETE /api/users/{name} - Delete user (from OpenAPI)
- `permissions.list`: GET /api/permissions - List permissions (from OpenAPI)
- `permissions.set`: PUT /api/permissions/{vhost}/{user} - Set permissions (from OpenAPI)
- `vhosts.list`: GET /api/vhosts - List virtual hosts (from OpenAPI)
- `vhosts.create`: PUT /api/vhosts/{name} - Create vhost (from OpenAPI)
- `vhosts.delete`: DELETE /api/vhosts/{name} - Delete vhost (from OpenAPI)

**Note**: All operations auto-generated from OpenAPI `paths` with tags "Users", "Permissions", "Virtual Hosts"

## Technical Requirements

### Authentication
- Support for multiple authentication methods
- Secure credential storage and management
- Session management and timeout
- Authentication failure handling and logging

### Encryption
- TLS 1.2+ for all connections
- Certificate validation and rotation
- Secure key management
- Encryption at rest for sensitive data

### Access Control
- Granular permission system
- Virtual host isolation
- User and role management
- Permission inheritance and delegation

### Rate Limiting
- Configurable rate limits (default: 1000 requests/minute per user)
- Per-tool rate limiting
- Abuse detection algorithms
- Temporary blocking mechanisms

### Security Monitoring
- Real-time security event monitoring
- Comprehensive audit logging
- Security alert generation
- Compliance reporting

## Acceptance Criteria

### Functional Requirements
- [ ] Multiple authentication methods work correctly
- [ ] TLS encryption is properly implemented
- [ ] Access control system functions as expected
- [ ] Rate limiting prevents abuse effectively
- [ ] Security monitoring detects threats accurately

### Security Requirements
- [ ] All connections use TLS encryption
- [ ] Credentials are stored securely
- [ ] Access control is granular and effective
- [ ] Rate limiting prevents abuse
- [ ] Security events are logged and monitored

### Performance Requirements
- [ ] Authentication overhead < 100ms
- [ ] Encryption overhead < 50ms
- [ ] Rate limiting overhead < 10ms
- [ ] Security monitoring overhead < 5ms

### Compliance Requirements
- [ ] Security controls meet enterprise standards
- [ ] Audit trail is complete and accurate
- [ ] Compliance reporting is comprehensive
- [ ] Security policies are enforced

## Dependencies
- cryptography for encryption and certificates
- ldap3 for LDAP integration
- PyJWT for JWT token handling
- asyncio for concurrent security operations

## Implementation Notes
- Use industry-standard encryption libraries
- Implement secure credential storage mechanisms
- Set up comprehensive audit logging
- Configure rate limiting with abuse detection
- Implement security monitoring and alerting
- Create security policies and procedures
- Set up certificate management and rotation
- Implement security testing and validation