vaultbox

Encrypted secrets for Next.js. No vault needed.

Store encrypted secrets in your repo. Decrypt them at runtime with a single key. Zero external dependencies beyond Node.js built-in crypto.

Install

npm install vaultbox

Quick Start

# 1. Initialize lockbox in your project
npx lockbox init

# 2. Store secrets
npx lockbox set DATABASE_URL "postgresql://user:pass@host/db"
npx lockbox set API_KEY "sk-secret-key" --env production

# 3. Use in your code

import { createLockbox } from "vaultbox";

const box = createLockbox();

// Get a secret (returns undefined if missing)
const dbUrl = box.secret("DATABASE_URL");

// Get a secret (throws if missing)
const apiKey = box.require("API_KEY");

// Get all secrets for the current NODE_ENV
const all = box.secrets();

CLI Reference

lockbox init

Generates a .lockbox-key file (random 256-bit key), creates the .secrets/ directory, and adds .lockbox-key to .gitignore.

lockbox set <name> <value> [--env ENV]

Encrypts a secret and stores it in .secrets/{env}.json. Default environment: development.

lockbox set STRIPE_KEY sk_live_abc123
lockbox set STRIPE_KEY sk_test_xyz789 --env production

lockbox get <name> [--env ENV]

Decrypts and prints a single secret.

lockbox get STRIPE_KEY
lockbox get STRIPE_KEY --env production

lockbox list [--env ENV]

Lists stored secret names (values are not shown).

lockbox list
lockbox list --env production

lockbox env [--env ENV]

Outputs all secrets in .env format. Useful for piping:

lockbox env --env production > .env.local

lockbox rotate

Generates a new encryption key and re-encrypts all secrets across all environments.

lockbox rotate

lockbox import <file> [--env ENV]

Imports secrets from an existing .env file.

lockbox import .env
lockbox import .env.production --env production

Programmatic API

createLockbox(config?)

Creates a lockbox instance that reads secrets for the current NODE_ENV.

import { createLockbox } from "vaultbox";

const box = createLockbox();
// Or with custom paths:
const box = createLockbox({
  keyPath: ".lockbox-key",   // default
  secretsDir: ".secrets",    // default
});

Methods:

| Method | Returns | Description | |--------|---------|-------------| | secret(name) | string \| undefined | Get a decrypted secret | | require(name) | string | Get a secret; throws if missing | | secrets() | Record<string, string> | All secrets for current env | | encrypt(plaintext) | EncryptedEnvelope | Encrypt arbitrary text | | decrypt(envelope) | string | Decrypt an envelope | | rotate() | string | Re-encrypt everything; returns new key |

generateKey()

Generate a random 256-bit encryption key as a hex string.

import { generateKey } from "vaultbox";
const key = generateKey(); // 64-char hex string

How It Works

1. lockbox init generates a random 256-bit master key and writes it to .lockbox-key
2. When you set a secret, lockbox:
   • Generates a random 128-bit IV and 256-bit salt
   • Derives an encryption key from the master key + salt using PBKDF2-SHA512 (100,000 iterations)
   • Encrypts the value with AES-256-GCM
   • Stores the envelope (IV, salt, ciphertext, auth tag) in .secrets/{env}.json
3. When you read a secret at runtime, lockbox reverses the process using the same master key
4. Each secret gets its own random IV and salt, so identical values produce different ciphertexts

Git Workflow

Commit these files (encrypted, safe to share):

• .secrets/development.json
• .secrets/production.json

Never commit (added to .gitignore by lockbox init):

• .lockbox-key

Share the key with your team via a secure channel (1Password, Slack DM, etc). In CI/CD, set the LOCKBOX_KEY environment variable.

# CI/CD example
LOCKBOX_KEY=your-hex-key-here npm run build

Key Rotation

lockbox rotate

This generates a new key, re-encrypts every secret in every environment, and writes the new key to .lockbox-key. Distribute the new key to your team and update CI/CD.

Migration from .env

# Import your existing .env file
lockbox import .env

# Import production secrets
lockbox import .env.production --env production

# Verify
lockbox list
lockbox list --env production

# Remove the old .env files
rm .env .env.production

License

MIT