A featureful dependency-free UID generator

npm install clerobee
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Clerobee - a featureful UID generator

clerobee is a very handy dependency-free utility library allowing to generate UIDs considering actual time, network resources and process in a distributed environment.

Use cases

Following use cases are supported:

  • Normal UIDs: Identifiers for general usage with length between 4 and 256. Can be used as cryptographic keys, user IDs, session keys, etc.

  • Derived UIDs: To express ownership-like relations between identifiers.

    If you have to identify devices and be able to link them to a user with verify the ownership against the userID, then simply generate a UID for the user and generate derived UIDs for the devices.

    Therethrough the ownership of the device where for example a REST request is coming, can be verified.

  • Sourced UIDs: Using a JS object data as source for the generation process.

    For example to generate product/license keys based on user information and to check if they can be matched while a possible registration process later on.


var Cerobee = require('clerobee');

// optional default length for the IDS is passed.
// 16 would be used if nothing is given.
var cerobee = new Cerobee( 128 );


// generate a normal UID with length of 128
var nID = cerobee.generate();

// generate a normal UID with length of 16
var nID_2 = cerobee.generate( 16 );


// Generates derived UID using the 'nID' as basis.
// Its length will be the same: 128
var sID = cerobee.generate( nID );

// Tests if 'sID' is really derived from 'nID'.
// Test will fail will any other UIDs but 'sID'
var test_1 = cerobee.isDerived( nID, sID );


// Creates user data
var customer = { email:'' };

// Generates Sourced UID based on customer data with length of 128
var pID = cerobee.generate( customer, 128 );

// Tests if the given sourced UID relly carries the given user data.
// Test will fail with any other pair of user data and UID but this
var test_2 = cerobee.isSourced( reference, 128, pID );

And that's it!




  • 0.0.1: Initial release...
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