OpenPAYGO is an Open Source ecosystem to enable pay-as-you-go functionality in new devices and products.

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OpenPAYGO - JavaScript library

This repository contains the JavaScript implementions of different OpenPAYGO technologies to run on your server or device.

Server-side tasks include

• generating OpenPAYGO tokens
• decoding OpenPAYGO metrics payloads

Device side tasks

• decoding OpenPAYGO tokens
• generating OpenPAYGO metrics payloads

Installation

Install via NPM (browser/nodejs)

npm i openpaygo

Usage

Generate normal or extended tokens

// initialize token encoder
const encoder = new require("openpaygo").Encoder()

// generate normal or extended token using generateToken function
const { finalToken, newCount } = encoder.generateToken({
  tokenType: 1,
  secretKeyHex: "bc41ec9530f6dac86b1a29ab82edc5fb",
  count: 3,
  startingCode: 516959010,
  restrictDigitSet: false,
  value: 1,
  extendToken: false,
})

console.log("generated token ", finalToken)
console.log("next token count ", newCount)

Decode tokens using token decoder

// initialize token decoder
const decoder = new require("openpaygo").Decoder()

// decord token (type, value, count, updated_counts) using decodeToken function
const { value, tokenType, count, updatedCounts } = decoder.decodeToken({
  token: "380589011",
  secretKeyHex: "bc41ec9530f6dac86b1a29ab82edc5fb",
  count: 3,
  usedCounts: [],
  startingCode: 516959010,
  restrictedDigitSet: false,
})

console.log(value) // decoded token value
console.log(count) // decoded token count
console.log(tokenType) // decoded token type
console.log(updatedCounts) // decoder token update count

Documentation

OpenPAYGO documentation is hosted on https://enaccess.github.io/OpenPAYGO-docs/.

OpenPAYGO ecosystem feature availabilties

The OpenPAYGO ecosystem offers a range of feautres to implement pay-as-you-go services. These features are implemented in different programming language libraries individually. Not all libraries have implemented the full range of features yet.

The OpenPAYGO JavaScript library supports the following features:

Feature	Status
OpenPAYGO Token	✅ (stable)
OpenPAYGO Metrics	❌ (not implemented)

Support

• OSEA Discord (#openpaygo channel)
• EnAccess