uuid-key-generator

UUID Key Generator

Provides a class that generates random keys with custom size and base-encoding using the RFC4122 v4 UUID algorithm. Generated keys are strings that are guaranteed to always be the same length, depending on the specified bit-size of the key.

Great for generating things like API keys and compact IDs.

Installation

npm install uuid-key-generator --save

Usage

var KeyGenerator = require('uuid-key-generator');

var keygen = new KeyGenerator(); // Default is a 128-bit key encoded in base58
keygen.generateKey();
// -> '4QhmRwHwwrgFqXULXNtx4d'

var keygen2 = new KeyGenerator(256, KeyGenerator.BASE62);
keygen2.generateKey();
// -> 'x6GCX3aq9hIT8gjhvO96ObYj0W5HBVTsj64eqCuVc5X'

API

new KeyGenerator([bitSize][, baseEncoding]) ⇒ Object

Creates a new KeyGenerator instance that generates bitSize keys encoded using the characters in baseEncoding.

Param	Default	Type	Description
[bitSize]	128	Number	The size of the key to generate in bits. Must be a multiple of 128.
[baseEncoding]	KeyGenerator.BASE58	String	One of the KeyGenerator.BASE## constants or a custom string of characters to use to encode the key.

Example

new KeyGenerator();
new KeyGenerator(256);
new KeyGenerator(KeyGenerator.BASE36);
new KeyGenerator(512, KeyGenerator.BASE62);
new KeyGenerator('0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz+/'); // Custom encoding (base64)

KeyGenerator.BASE16 : String

0123456789abcdef

KeyGenerator.BASE36 : String

0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ

KeyGenerator.BASE58 : String

123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz

KeyGenerator.BASE62 : String

0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz

keygen.generateKey() ⇒ String

Generates a random key.

Returns: String - A random key that is always keygen.keyLength characters long.

Example

var keygen = new KeyGenerator();
keygen.generateKey();
// -> 'vf5NrETkUKCa6FhkyRSazD'

(readonly) keygen.bitSize : Number

The size of the key that will be generated in bits (the bitSize value passed to the KeyGenerator constructor).

(readonly) keygen.baseEncoding : String

The set of characters used to encode the key (the baseEncoding value passed to the KeyGenerator constructor).

(readonly) keygen.base : Number

The base of the key that will be generated (which is the number of characters in the baseEncoding).

(readonly) keygen.keyLength : Number

The length of the key that will be generated. The generated key will always be this length.