# Secrets - Secrets and Credential Management Service

## Overview

The Secrets service provides secure management of credentials, API keys, and sensitive configuration information for the MUXI Runtime. It offers encrypted storage, secure retrieval, and lifecycle management for sensitive data used across formation and other services.

## Relations to Other Modules

- **Used by Formation**: Formation components use secrets for API keys and credentials
- **Used by Services**: Other services use secrets for external service authentication
- **Uses Utils**: May use utilities for encryption and secure storage
- **Development Tools**: utils/ contains add_secret.py and delete_secret.py development utilities
- **Standalone Service**: Can operate independently for secrets management

## Core Files

### `__init__.py`
- **Purpose**: Secrets service module exports
- **Relations**: Exports secrets management classes to runtime and service components

#### **Description**:
Provides the public interface for secrets management, exporting the main SecretsManager class and related utilities for secure credential handling.

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### `secrets_manager.py`
- **Purpose**: Main secrets management implementation
- **Relations**: Central secrets coordinator used by formation and all services requiring credentials

#### **Description**:
Comprehensive secrets management system that provides:
- Secure storage and encryption of sensitive data
- API key and credential lifecycle management
- Secure retrieval and access control
- Integration with external secret stores
- Audit logging for secrets access
- Rotation and expiration management

## Key Capabilities

1. **Secure Storage**: Encrypted storage of sensitive credentials and API keys
2. **Access Control**: Controlled access to secrets with proper authorization
3. **Lifecycle Management**: Complete credential lifecycle from creation to expiration
4. **Multiple Backends**: Support for different secret storage backends
5. **Audit Logging**: Comprehensive logging of secrets access and operations
6. **Development Support**: Development utilities for easy secrets management
7. **Integration**: Seamless integration with formation and service components

## Security Features

1. **Encryption**: Strong encryption for sensitive data at rest
2. **Access Logging**: Complete audit trail of secrets access
3. **Rotation Support**: Automated and manual credential rotation
4. **Secure Retrieval**: Protected credential retrieval mechanisms
5. **Expiration Management**: Automatic handling of credential expiration
6. **Environment Isolation**: Separate secrets management for different environments

## Design Principles

1. **Security First**: Strong security and encryption for all sensitive data
2. **Auditability**: Complete audit trail for compliance and security
3. **Simplicity**: Easy-to-use interface for developers and operations
4. **Flexibility**: Support for different secret types and storage backends
5. **Integration**: Seamless integration with runtime components
6. **Development Friendly**: Tools and utilities for easy development and testing

## Usage Patterns

- **Store Secret**: `secrets_manager.store_secret(key, value)` for secure storage
- **Retrieve Secret**: `secrets_manager.get_secret(key)` for secure retrieval
- **Rotate Credential**: `secrets_manager.rotate_secret(key)` for credential rotation
- **Development**: Use `add_secret.py` and `delete_secret.py` utilities for local development
- **Integration**: Services automatically retrieve secrets for external API access
