Problems generating addresses using bip32

I'm trying to generate bip32 addresses using the following (the PHP version).

The author provides a test MPK which I can get working that looks like this:

675b7041a347223984750fe3ab229df0c9f960e7ec98226b7182a2cb1990e39901feecf5a670f1d788ab29f626e20de424f049d216fc6f4c6ec42506763fa28e

However, the MPK I export from electrum does not work. Its much shorter and looks like this:

xpub661MyMwAqRbcGntu46CZtzegh5V3vT624SJqPVUgqzboX6A39f1hb8vEMrG555gV5QzVXEpPXqwayMQKu1ZKKRLkX9AoFvqPwAm3qL24AnE

The exact message I get is

pack(): Type H: illegal hex digit x

Any idea whats going on? Why does electrum's MPK not resemble the authors?

Aakil Fernandes

Posted 2015-05-25T19:23:44.097

Reputation: 295

Answers

addrgen author here!

Addrgen was created before Electrum was BIP-0032 compatible and thus it used different master public keys and derivation method.

Please check the following PHP implementation which supports BIP-0032:

https://github.com/Bit-Wasp/bitcoin-lib-php

For python there are couple of implementations available, e.g.

Pavol Rusnak

Posted 2015-05-25T19:23:44.097

Reputation: 111

Bitwasp guy here, maybe check out https://github.com/Bit-Wasp/bitcoin-php rewrote the old library - src/Key/HierarchicalKeyFactory.php is probably what you need

– karimkorun – 2015-05-26T01:46:48.820