Introduction

This lib can be used for the Token Distribution Portal to generate redeem code.

Prerequisite

Install node modules

npm install --save @kambria/redeem-code-generator

How to test?

Stay at the root folder and run this command:

npm test

How to use for production?

Using in Nodejs:

var rcg = require('@kambria/redeem-code-generator');

Using in React:

import rcg from '@kambria/redeem-code-generator';

Methods

• priv2Addr(priv): convert private key to address

  Params:
  
  * priv: <string> Signer's private key
  
  Outputs:
  
  * addr: <string> The relevant address
  

• genUnlocktime(sencondsHaveToWaitFor): generate normalized unlocktime from the current moment

  Params:
  
  * sencondsHaveToWaitFor: <number> The number of senconds that users have to wait till available time to redeem
  
  Outputs:
  
  * unlocktime: <string> The normalized unlocktime
  

• genRedeemCode(user, value, unlockTimestamp, priv): generate redeem code

  Params:
  
  * user: <string> Investor's address
  * value: <string> Number of token
  * unlockTimestamp: <string> Timestamp of code unlock (in seconds)
  * priv: <string> Signer's private key
  
  Outputs:
  
  * code: <object> Redeem code
  

• verifyRedeemCode(signerAddr, code): verify redeem code

  Params:
  
  * signerAddr: <string> Signer's address
  * code: <object> Redeem code (genRedeemCode returned)
  
  Outputs:
  
  * valid: <boolean> true/false
  

Examples

var generator = require('@kambria/redeem-code-generator');

// Generate code
const PRIVATE_KEY = 'c87509a1c067bbde78beb793e6fa76530b6382a4c0241e5e4a9ec0a0f44dc0d3';
const USER = '0x627306090abab3a6e1400e9345bc60c78a8bef57';
const VALUE = '5000000000000000000000';
const UNLOCKTIME = '1549694770';

var code = generator.genRedeemCode(USER, VALUE, UNLOCKTIME, PRIVATE_KEY);


// Verify code
const ADDRESS = '0x627306090abab3a6e1400e9345bc60c78a8bef57';
var ok = generator.verifyRedeemCode(ADDRESS, code);

Cheatsheet

#	Commands	Descriptions
1	npm install	Install module packages
5	npm run build	Build javascript libraries for contracts
6	npm test	Run mocha unit tests