key-id

Convert your sensitive IDs to keys before exposing them and get your IDs back from keys.

What it is for?

Most common is exposing integer IDs as keys.

Instead of having /users/42, that indicates how many users or any other sesitive business information you got in sequence, you would end up with /users/6CD8818A7F3D2BCDA2C85C3F5331D857, which can then be reverted back to ID 42 upon requests.

Install

$ npm install --save key-id

Usage

const keyId = require('key-id');

const keyA = keyId.idToKey(42);
// => 6CD8818A7F3D2BCDA2C85C3F5331D857
const idA = keyId.keyToId(keyB);
// => 42

// [optional, but recommended] set global private encrypting and decrypting key
keyId.setPrivateKey('private example');

const keyB = keyId.idToKey(42);
// => AF5337DF44490C7F1D7DFEE51108D190
const idB = keyId.keyToId(keyB);
// => 42

// or use specific private key upon conversion
const CUSTOM_KEY = 'my key';
const keyC = keyId.idToKey(42, CUSTOM_KEY);
// => 76F2E44A9D25670BB27E0CC2C133FB0A
const idC = keyId.keyToId(keyC, CUSTOM_KEY);
// => 42

API

idToKey(value [, privateKey])

Returns the encrypted string of the provided value.

keyToId(value [, privateKey])

Returns the decrypted value of the provided key.

NOTE

If provided values are invalid it returns false.