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add BIP32 example 

...and also update BIP32.seed to default to mainnet/livenet.
This commit is contained in:
Ryan X. Charles 2014-04-02 12:02:32 -04:00
parent 42522e03b9
commit edab2d18a1
2 changed files with 84 additions and 1 deletions
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2
BIP32.js
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@ -50,7 +50,7 @@ var BIP32 = function(bytes) {
BIP32.seed = function(bytes, network) {
if (!network)
return false;
network = 'livenet';
if (!Buffer.isBuffer(bytes))
bytes = new Buffer(bytes, 'hex'); //if not buffer, assume hex

83
examples/BIP32.js Normal file
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@ -0,0 +1,83 @@
var run = function() {
bitcore = typeof (bitcore) === 'undefined' ? require('../bitcore') : bitcore;
var BIP32 = bitcore.BIP32;
var Address = bitcore.Address;
var networks = bitcore.networks;
var coinUtil = bitcore.util;
var crypto = require('crypto');
console.log('BIP32: Hierarchical Deterministic Wallets');
console.log('https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki\n');
console.log('1) Make new bip32 from randomly generated new seed');
var randomBytes = crypto.randomBytes(256);
var bip32 = BIP32.seed(randomBytes);
console.log('master extended private key: ' + bip32.extendedPrivateKeyString());
console.log('master extended public key: ' + bip32.extendedPublicKeyString());
console.log('m/0/3/5 extended private key: ' + bip32.derive('m/0/3/5').extendedPrivateKeyString());
console.log('m/0/3/5 extended public key: ' + bip32.derive('m/0/3/5').extendedPublicKeyString());
console.log();
console.log('2) Make new bip32 from known seed');
var knownBytes = coinUtil.sha256('do not use this password as a brain wallet');
var bip32 = BIP32.seed(knownBytes);
console.log('master extended private key: ' + bip32.extendedPrivateKeyString());
console.log('master extended public key: ' + bip32.extendedPublicKeyString());
console.log('m/0/3/5 extended private key: ' + bip32.derive('m/0/3/5').extendedPrivateKeyString());
console.log('m/0/3/5 extended public key: ' + bip32.derive('m/0/3/5').extendedPublicKeyString());
console.log();
console.log('3) Make new bip32 from known master private key');
var knownMasterPrivateKey = 'xprv9s21ZrQH143K2LvayFZWVVTomiDKheKWvnupDB8fmjKwxkKG47uvzmFa3vCXoy9fxPJhRYsU19apVfexvMeLpJQuF2XtX1zRF3eao9GqqaQ';
var bip32 = new BIP32(knownMasterPrivateKey);
console.log('master extended private key: ' + bip32.extendedPrivateKeyString());
console.log('master extended public key: ' + bip32.extendedPublicKeyString());
console.log('m/0/3/5 extended private key: ' + bip32.derive('m/0/3/5').extendedPrivateKeyString());
console.log('m/0/3/5 extended public key: ' + bip32.derive('m/0/3/5').extendedPublicKeyString());
console.log();
console.log('4) Make new bip32 from known master public key');
var knownMasterPublicKey = 'xpub661MyMwAqRbcGpiFufipqsKKBG1NHNwfJKishAEFNqJ6ryLcKeKyFNEZces7gMWd4XGg4uUhXy8DS64o1oPGUECVHeLq957Txjwagxt475H';
var bip32 = new BIP32(knownMasterPublicKey);
console.log('master extended private key: cannot derive');
console.log('master extended public key: ' + bip32.extendedPublicKeyString());
console.log('m/0/3/5 extended private key: cannot derive');
console.log('m/0/3/5 extended public key: ' + bip32.derive('m/0/3/5').extendedPublicKeyString());
console.log();
console.log('5) Make new bip32 from knowan derived public key');
var knownPublicKey = 'xpub6CZei1p2zk68UwkcBDqzRonLHJWAiPZZ58sMgHJAn9fmpmnPayVEAvAs3XvTSUMZ1J8dNaxnv4wnt7YpRKr6BsqeWbW8msqeuuhiSzsQEC3';
var bip32 = new BIP32(knownPublicKey);
console.log('master extended private key: cannot derive');
console.log('master extended public key: ' + bip32.extendedPublicKeyString());
console.log('m/0/3/5 extended private key: cannot derive');
console.log('m/0/3/5 extended public key: ' + bip32.derive('m/0/3/5').extendedPublicKeyString());
console.log();
console.log('6) Make a bunch of new addresses from known public key');
var knownPublicKey = 'xpub6CZei1p2zk68UwkcBDqzRonLHJWAiPZZ58sMgHJAn9fmpmnPayVEAvAs3XvTSUMZ1J8dNaxnv4wnt7YpRKr6BsqeWbW8msqeuuhiSzsQEC3';
var bip32 = new BIP32(knownPublicKey);
console.log('m/0 address: ' + new Address(networks['livenet'].addressVersion, bip32.derive('m/0').eckey.public).toString());
//console.log('m/1 extended public key: ' + bip32.derive('m/1').extendedPublicKeyString());
console.log('m/1 address: ' + new Address(networks['livenet'].addressVersion, bip32.derive('m/1').eckey.public).toString());
//console.log('m/2 extended public key: ' + bip32.derive('m/2').extendedPublicKeyString());
console.log('m/2 address: ' + new Address(networks['livenet'].addressVersion, bip32.derive('m/2').eckey.public).toString());
//console.log('m/3 extended public key: ' + bip32.derive('m/3').extendedPublicKeyString());
console.log('m/3 address: ' + new Address(networks['livenet'].addressVersion, bip32.derive('m/3').eckey.public).toString());
console.log('...');
//console.log('m/100 extended public key: ' + bip32.derive('m/100').extendedPublicKeyString());
console.log('m/100 address: ' + new Address(networks['livenet'].addressVersion, bip32.derive('m/100').eckey.public).toString());
console.log();
};
// This is just for browser & mocha compatibility
if (typeof module !== 'undefined') {
module.exports.run = run;
if (require.main === module) {
run();
}
} else {
run();
}