Installing and using the Additional Modules

matt123 · January 22, 2015, 8:36am

As per https://github.com/bitpay/bitcore-mnemonic , I am trying to get this installed for use client side in a browser (chrome). I’ve followed the instructions

npm install bitcore-mnemonic
bower install bitcore-mnemonic

But how do I get from the above to be able to use this client side in say chrome without needing the “Require”. Where and how do I generate the bitcore-mnemonic.js client side for use in the browser?

//var Mnemonic = require(‘bitcore-mnemonic’);
var code = new Mnemonic(Mnemonic.Words.SPANISH);
code.toString(); // natal hada sutil año sólido papel jamón combate aula flota ver esfera…
var xpriv = code.toHDPrivateKey();

I am not familiar with node so I do apologize if this something straight forward

Thank you

matt123 · January 22, 2015, 11:09am

Ok, Figured it out. Have to be compiled with the standalone flag. Works now

thanks

maraoz · January 22, 2015, 5:44pm

Matt,

You shouldn’t need to browserify or compile anything if you’re using bower. You just bower install the needed modules, and then include them from the bower_components folder.

Please see this example I just tested and should be working: (for bitcore-ecies, working on a bitcore-mnemonics one now)

github.com

maraoz/bitcore-examples/blob/master/ecies.html

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="utf-8">
  <title>Bitcore ECIES browser usage</title>

  <script src="bower_components/bitcore/bitcore.min.js"></script>
  <script src="bower_components/bitcore-ecies/bitcore-ecies.min.js"></script>
</head>

<body>

  <script type="text/javascript">
    var bitcore = require('bitcore');
    var ECIES = require('bitcore-ecies');
    var PrivateKey = bitcore.PrivateKey;

    var alice = new PrivateKey();
    var bob = new PrivateKey();

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matt123 · January 22, 2015, 5:54pm

@maraoz I am not running this from node. Its a pure client side solution running on a IIS server. I used browserify on index.js to get this to work. Or am I doing this wrongly?

I don’t think I can use the require(‘bitcore’) and require(‘bitcore-ecies’); without node

maraoz · January 22, 2015, 6:06pm

Yes you can! The linked example is purely client-side code

Here’s a new mnemonic example: https://github.com/maraoz/bitcore-submodule-examples/blob/master/mnemonic.html

If you need any help getting this to work, let me know, but it should be as easy as doing:

bower install bitcore
bower install bitcore-mnemonic

and then importing the files form bower_components like so: https://github.com/maraoz/bitcore-submodule-examples/blob/master/mnemonic.html#L8

matt123 · January 22, 2015, 6:17pm

sigh… I feel like a fool

Thanks. that worked.

ps: You wouldn’t happen to have samples on how to retrieve the HDprivate keys from an existing mnemonic seed (bip32) now, would you ?

matt123 · January 22, 2015, 6:31pm

Btw, I think the sample here is incorrect?

http://bitcore.io/guide/hierarchical.html.

var hdPrivateKey = new HDPrivateKey();
var retrieved = new HDPrivateKey(‘xpriv…’);
var derived = privateKey.derive(“m/0’”); --> var derived = retrieved.derive(“m/0’”);

maraoz · January 22, 2015, 6:51pm

Yes, it’s wrong. It should either be retrieved or hdPrivateKey