Native Keyvault

A cross-platform Node.js credential storage library that securely stores passwords using native OS credential managers with an encrypted fallback option.

Features

• Cross-platform support: macOS (Keychain), Windows (Credential Manager), Linux (libsecret)
• Automatic fallback: Falls back to encrypted file storage if native storage fails
• Secure encryption: AES-256-GCM encryption for fallback storage
• Simple API: Just three methods: save(), get(), and delete()

Installation

pnpm add native-keyvault

Platform Requirements

Linux only: Requires libsecret-tools for native credential storage:

sudo apt-get install libsecret-tools

macOS and Windows have native support built into the OS.

Usage

import { CredentialStore } from 'native-keyvault'

const store = new CredentialStore('my-app')

store.save('[email protected]', 'my-secure-password')

const password = store.get('[email protected]')
console.log(password)

store.delete('[email protected]')

Force Fallback Mode

If you want to always use encrypted file storage instead of the native credential manager:

const store = new CredentialStore('my-app', { fallback: true })

API

new CredentialStore(service, options?)

Creates a new credential store instance.

• service (string): Identifier for your application
• options.fallback (boolean): Force fallback storage instead of native. Default: false

save(account, password)

Saves a credential.

• account (string): Account identifier (e.g., email, username)
• password (string): Password to store

get(account): string | null

Retrieves a credential.

• account (string): Account identifier
• Returns: Password string or null if not found

delete(account)

Deletes a credential.

• account (string): Account identifier to delete

How It Works

1. Native Storage (default): Uses OS-specific credential managers

   • macOS: Keychain via security command
   • Windows: Credential Manager via cmdkey
   • Linux: libsecret via secret-tool

2. Fallback Storage: If native storage fails or is unavailable

   • Stores encrypted credentials in ~/.cache/{service}/credentials.json
   • Uses AES-256-GCM encryption with a randomly generated key
   • Key stored in ~/.cache/{service}/key.bin with restricted permissions (600)

Security Considerations

• Passwords are passed to native tools via stdin to avoid process list exposure
• Fallback encryption uses industry-standard AES-256-GCM
• Fallback storage files are created with restricted permissions (owner read/write only)
• Native credential managers provide OS-level security features

License

MIT