# Key & Secrets Vault

### Overview

The Key & Secrets Vault is a secure system designed to manage API keys and secrets while enabling natural language interactions with LLM systems. It implements a human-readable key mapping mechanism that allows LLMs to reference keys naturally while maintaining security.

### Core Concepts

#### Human-Readable Keys

The vault system introduces the concept of human-readable keys, which are intuitive identifiers that LLMs can understand and use in their operations. For example:

* Human-readable key: `GOOGLE_MAPS_KEY_FOR_GEOCODING`
* Actual API key: `AIza...` (actual API key stored securely)

#### Local-First Storage

The vault prioritizes security by storing secrets locally on the user's machine:

* Keys are stored in an encrypted format
* Storage location is user-specific and access-controlled
* No cloud synchronization by default

#### Key Mapping System

The vault implements a bidirectional mapping system:

* Translation from human-readable keys to actual API keys
* Runtime replacement of keys in API calls
* Secure key rotation support

### Implementation

#### Storage Structure

The vault uses a hierarchical storage structure:

```
vault/
├── keys/
│   ├── encrypted_keys.db
│   └── key_metadata.json
├── mappings/
│   └── key_mappings.json
└── config/
    └── vault_config.json
```

#### Security Measures

1. Encryption at Rest
   * All keys are encrypted before storage
   * User-specific encryption key
   * Secure key derivation
2. Access Control
   * Permission-based access system
   * Application-level authentication
   * Audit logging
3. Key Rotation
   * Automated key rotation support
   * Version history maintenance
   * Graceful transition periods

### Usage

#### Key Registration

Register new keys with human-readable identifiers:

```javascript
await vault.register({
  readableKey: "MAPS_GEOCODING_KEY",
  actualKey: "actual-api-key-value",
  description: "Google Maps Geocoding API Key",
  expiresAt: "2024-12-31"
});
```

#### Key Retrieval

Retrieve keys using human-readable identifiers:

```javascript
javascriptCopyconst apiKey = await vault.get("MAPS_GEOCODING_KEY");
```

#### LLM Integration

Example of LLM interaction using human-readable keys:

```javascript
// LLM can generate code using human-readable keys
const geocodingCode = `
  const response = await fetch(url, {
    headers: {
      'Authorization': MAPS_GEOCODING_KEY
    }
  });
`;

// Vault system automatically replaces keys during execution
const executedCode = await vault.executeWithKeys(geocodingCode);
```

### Configuration

#### Local Storage Setup

Configure the local storage location:

```javascript
vault.configure({
  storageLocation: "~/.config/vault",
  encryptionMethod: "AES-256-GCM",
  backupEnabled: true
});
```

#### Key Management Rules

Define rules for key management:

```javascript
vault.setKeyRules({
  rotationPeriod: "90days",
  minimumLength: 32,
  requiresBackup: true
});
```

### Best Practices

#### Key Naming Conventions

1. Use descriptive, purpose-indicating names
2. Include service and functionality in the name
3. Use uppercase with underscores
4. Include version or environment if necessary

#### Security Guidelines

1. Regular key rotation
2. Secure backup management
3. Access logging and monitoring
4. Environment-specific keys

### Local Development

Find a better init Vault set-up for LeviaProtocal, easier way.

#### ~~Setting Up Local Vault~~

1. ~~Initialize local vault:~~

   ```bash
   bashCopyvault init --local
   ```
2. ~~Configure encryption:~~

   ```bash
   bashCopyvault configure encryption --method AES-256-GCM
   ```
3. ~~Set up backup:~~

   ```bash
   bashCopyvault configure backup --location ./backup
   ```

#### ~~Testing~~

1. ~~Key registration testing~~
2. ~~Key retrieval performance~~
3. ~~Encryption/decryption validation~~
4. ~~Access control verification~~

### Error Handling

The vault implements comprehensive error handling:

1. Key not found scenarios
2. Encryption/decryption failures
3. Storage access issues
4. Permission-related errors

### Limitations

Current limitations of the system:

1. Single-machine scope
2. No built-in synchronization
3. Limited to local filesystem
4. Requires secure environment

### Future Enhancements

Planned improvements:

1. Distributed vault support
2. Cloud backup options
3. Team sharing capabilities
4. Advanced key rotation patterns

### API Reference

#### Core Functions

* `vault.register(keyConfig)`
* `vault.get(readableKey)`
* `vault.update(readableKey, newConfig)`
* `vault.delete(readableKey)`
* `vault.rotate(readableKey)`
* `vault.list()`
* `vault.verify(readableKey)`

#### Configuration Functions

* `vault.configure(config)`
* `vault.setKeyRules(rules)`
* `vault.getKeyMetadata(readableKey)`
* `vault.updateKeyMetadata(readableKey, metadata)`